Vulnerability-Lookup

RHSA-2021:0808

Vulnerability from csaf_redhat - Published: 2021-03-10 20:03 - Updated: 2025-12-18 16:13

Summary

Red Hat Security Advisory: wpa_supplicant security update

Severity

Important

Notes

Topic: An update for wpa_supplicant is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Details: The wpa_supplicant packages contain an 802.1X Supplicant with support for WEP, WPA, WPA2 (IEEE 802.11i / RSN), and various EAP authentication methods. They implement key negotiation with a WPA Authenticator for client stations and controls the roaming and IEEE 802.11 authentication and association of the WLAN driver. Security Fix(es): * wpa_supplicant: Use-after-free in P2P provision discovery processing (CVE-2021-27803) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.

CVE-2021-27803

A flaw was found in the wpa_supplicant, in the way it processes P2P (Wi-Fi Direct) provision discovery requests. This flaw allows an attacker who is within radio range of the device running P2P discovery to cause termination of the wpa_supplicant process or potentially cause code execution. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.

7.5 (High)


                        
                          CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE-416 - Use After Free

Affected products

Fixed 27 products

Product	Version	Remediation
Unresolved product id: 7Client-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.ppc64	—	Vendor Fix fix Workaround
Unresolved product id: 7Client-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.ppc64le	—	Vendor Fix fix Workaround
Unresolved product id: 7Client-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.s390x	—	Vendor Fix fix Workaround
Unresolved product id: 7Client-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.src	—	Vendor Fix fix Workaround
Unresolved product id: 7Client-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: 7Client-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.ppc64	—	Vendor Fix fix Workaround
Unresolved product id: 7Client-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.ppc64le	—	Vendor Fix fix Workaround
Unresolved product id: 7Client-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.s390x	—	Vendor Fix fix Workaround
Unresolved product id: 7Client-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: 7Server-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.ppc64	—	Vendor Fix fix Workaround
Unresolved product id: 7Server-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.ppc64le	—	Vendor Fix fix Workaround
Unresolved product id: 7Server-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.s390x	—	Vendor Fix fix Workaround
Unresolved product id: 7Server-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.src	—	Vendor Fix fix Workaround
Unresolved product id: 7Server-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: 7Server-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.ppc64	—	Vendor Fix fix Workaround
Unresolved product id: 7Server-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.ppc64le	—	Vendor Fix fix Workaround
Unresolved product id: 7Server-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.s390x	—	Vendor Fix fix Workaround
Unresolved product id: 7Server-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: 7Workstation-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.ppc64	—	Vendor Fix fix Workaround
Unresolved product id: 7Workstation-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.ppc64le	—	Vendor Fix fix Workaround
Unresolved product id: 7Workstation-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.s390x	—	Vendor Fix fix Workaround
Unresolved product id: 7Workstation-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.src	—	Vendor Fix fix Workaround
Unresolved product id: 7Workstation-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: 7Workstation-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.ppc64	—	Vendor Fix fix Workaround
Unresolved product id: 7Workstation-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.ppc64le	—	Vendor Fix fix Workaround
Unresolved product id: 7Workstation-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.s390x	—	Vendor Fix fix Workaround
Unresolved product id: 7Workstation-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.x86_64	—	Vendor Fix fix Workaround

Threats

Impact Important

References

9 references

URL	Category
https://access.redhat.com/errata/RHSA-2021:0808	self
https://access.redhat.com/security/updates/classi…	external
https://bugzilla.redhat.com/show_bug.cgi?id=1933361	external
https://security.access.redhat.com/data/csaf/v2/a…	self
https://access.redhat.com/security/cve/CVE-2021-27803	self
https://bugzilla.redhat.com/show_bug.cgi?id=1933361	external
https://www.cve.org/CVERecord?id=CVE-2021-27803	external
https://nvd.nist.gov/vuln/detail/CVE-2021-27803	external
https://w1.fi/security/2021-1/wpa_supplicant-p2p-…	external

JSON

To clipboard

{
  "document": {
    "aggregate_severity": {
      "namespace": "https://access.redhat.com/security/updates/classification/",
      "text": "Important"
    },
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Copyright \u00a9 Red Hat, Inc. All rights reserved.",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en",
    "notes": [
      {
        "category": "summary",
        "text": "An update for wpa_supplicant is now available for Red Hat Enterprise Linux 7.\n\nRed Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.",
        "title": "Topic"
      },
      {
        "category": "general",
        "text": "The wpa_supplicant packages contain an 802.1X Supplicant with support for WEP, WPA, WPA2 (IEEE 802.11i / RSN), and various EAP authentication methods. They implement key negotiation with a WPA Authenticator for client stations and controls the roaming and IEEE 802.11 authentication and association of the WLAN driver.\n\nSecurity Fix(es):\n\n* wpa_supplicant: Use-after-free in P2P provision discovery processing (CVE-2021-27803)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.",
        "title": "Details"
      },
      {
        "category": "legal_disclaimer",
        "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.",
        "title": "Terms of Use"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "https://access.redhat.com/security/team/contact/",
      "issuing_authority": "Red Hat Product Security is responsible for vulnerability handling across all Red Hat products and services.",
      "name": "Red Hat Product Security",
      "namespace": "https://www.redhat.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "https://access.redhat.com/errata/RHSA-2021:0808",
        "url": "https://access.redhat.com/errata/RHSA-2021:0808"
      },
      {
        "category": "external",
        "summary": "https://access.redhat.com/security/updates/classification/#important",
        "url": "https://access.redhat.com/security/updates/classification/#important"
      },
      {
        "category": "external",
        "summary": "1933361",
        "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1933361"
      },
      {
        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2021/rhsa-2021_0808.json"
      }
    ],
    "title": "Red Hat Security Advisory: wpa_supplicant security update",
    "tracking": {
      "current_release_date": "2025-12-18T16:13:28+00:00",
      "generator": {
        "date": "2025-12-18T16:13:28+00:00",
        "engine": {
          "name": "Red Hat SDEngine",
          "version": "4.6.14"
        }
      },
      "id": "RHSA-2021:0808",
      "initial_release_date": "2021-03-10T20:03:20+00:00",
      "revision_history": [
        {
          "date": "2021-03-10T20:03:20+00:00",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2021-03-10T20:03:20+00:00",
          "number": "2",
          "summary": "Last updated version"
        },
        {
          "date": "2025-12-18T16:13:28+00:00",
          "number": "3",
          "summary": "Last generated version"
        }
      ],
      "status": "final",
      "version": "3"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_name",
                "name": "Red Hat Enterprise Linux Client (v. 7)",
                "product": {
                  "name": "Red Hat Enterprise Linux Client (v. 7)",
                  "product_id": "7Client-7.9.Z",
                  "product_identification_helper": {
                    "cpe": "cpe:/o:redhat:enterprise_linux:7::client"
                  }
                }
              },
              {
                "category": "product_name",
                "name": "Red Hat Enterprise Linux Server (v. 7)",
                "product": {
                  "name": "Red Hat Enterprise Linux Server (v. 7)",
                  "product_id": "7Server-7.9.Z",
                  "product_identification_helper": {
                    "cpe": "cpe:/o:redhat:enterprise_linux:7::server"
                  }
                }
              },
              {
                "category": "product_name",
                "name": "Red Hat Enterprise Linux Workstation (v. 7)",
                "product": {
                  "name": "Red Hat Enterprise Linux Workstation (v. 7)",
                  "product_id": "7Workstation-7.9.Z",
                  "product_identification_helper": {
                    "cpe": "cpe:/o:redhat:enterprise_linux:7::workstation"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "Red Hat Enterprise Linux"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "wpa_supplicant-1:2.6-12.el7_9.2.src",
                "product": {
                  "name": "wpa_supplicant-1:2.6-12.el7_9.2.src",
                  "product_id": "wpa_supplicant-1:2.6-12.el7_9.2.src",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/wpa_supplicant@2.6-12.el7_9.2?arch=src\u0026epoch=1"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "src"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "wpa_supplicant-1:2.6-12.el7_9.2.x86_64",
                "product": {
                  "name": "wpa_supplicant-1:2.6-12.el7_9.2.x86_64",
                  "product_id": "wpa_supplicant-1:2.6-12.el7_9.2.x86_64",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/wpa_supplicant@2.6-12.el7_9.2?arch=x86_64\u0026epoch=1"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.x86_64",
                "product": {
                  "name": "wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.x86_64",
                  "product_id": "wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.x86_64",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/wpa_supplicant-debuginfo@2.6-12.el7_9.2?arch=x86_64\u0026epoch=1"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "x86_64"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "wpa_supplicant-1:2.6-12.el7_9.2.ppc64le",
                "product": {
                  "name": "wpa_supplicant-1:2.6-12.el7_9.2.ppc64le",
                  "product_id": "wpa_supplicant-1:2.6-12.el7_9.2.ppc64le",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/wpa_supplicant@2.6-12.el7_9.2?arch=ppc64le\u0026epoch=1"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.ppc64le",
                "product": {
                  "name": "wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.ppc64le",
                  "product_id": "wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.ppc64le",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/wpa_supplicant-debuginfo@2.6-12.el7_9.2?arch=ppc64le\u0026epoch=1"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "ppc64le"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "wpa_supplicant-1:2.6-12.el7_9.2.ppc64",
                "product": {
                  "name": "wpa_supplicant-1:2.6-12.el7_9.2.ppc64",
                  "product_id": "wpa_supplicant-1:2.6-12.el7_9.2.ppc64",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/wpa_supplicant@2.6-12.el7_9.2?arch=ppc64\u0026epoch=1"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.ppc64",
                "product": {
                  "name": "wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.ppc64",
                  "product_id": "wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.ppc64",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/wpa_supplicant-debuginfo@2.6-12.el7_9.2?arch=ppc64\u0026epoch=1"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "ppc64"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "wpa_supplicant-1:2.6-12.el7_9.2.s390x",
                "product": {
                  "name": "wpa_supplicant-1:2.6-12.el7_9.2.s390x",
                  "product_id": "wpa_supplicant-1:2.6-12.el7_9.2.s390x",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/wpa_supplicant@2.6-12.el7_9.2?arch=s390x\u0026epoch=1"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.s390x",
                "product": {
                  "name": "wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.s390x",
                  "product_id": "wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.s390x",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/wpa_supplicant-debuginfo@2.6-12.el7_9.2?arch=s390x\u0026epoch=1"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "s390x"
          }
        ],
        "category": "vendor",
        "name": "Red Hat"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "wpa_supplicant-1:2.6-12.el7_9.2.ppc64 as a component of Red Hat Enterprise Linux Client (v. 7)",
          "product_id": "7Client-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.ppc64"
        },
        "product_reference": "wpa_supplicant-1:2.6-12.el7_9.2.ppc64",
        "relates_to_product_reference": "7Client-7.9.Z"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "wpa_supplicant-1:2.6-12.el7_9.2.ppc64le as a component of Red Hat Enterprise Linux Client (v. 7)",
          "product_id": "7Client-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.ppc64le"
        },
        "product_reference": "wpa_supplicant-1:2.6-12.el7_9.2.ppc64le",
        "relates_to_product_reference": "7Client-7.9.Z"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "wpa_supplicant-1:2.6-12.el7_9.2.s390x as a component of Red Hat Enterprise Linux Client (v. 7)",
          "product_id": "7Client-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.s390x"
        },
        "product_reference": "wpa_supplicant-1:2.6-12.el7_9.2.s390x",
        "relates_to_product_reference": "7Client-7.9.Z"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "wpa_supplicant-1:2.6-12.el7_9.2.src as a component of Red Hat Enterprise Linux Client (v. 7)",
          "product_id": "7Client-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.src"
        },
        "product_reference": "wpa_supplicant-1:2.6-12.el7_9.2.src",
        "relates_to_product_reference": "7Client-7.9.Z"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "wpa_supplicant-1:2.6-12.el7_9.2.x86_64 as a component of Red Hat Enterprise Linux Client (v. 7)",
          "product_id": "7Client-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.x86_64"
        },
        "product_reference": "wpa_supplicant-1:2.6-12.el7_9.2.x86_64",
        "relates_to_product_reference": "7Client-7.9.Z"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.ppc64 as a component of Red Hat Enterprise Linux Client (v. 7)",
          "product_id": "7Client-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.ppc64"
        },
        "product_reference": "wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.ppc64",
        "relates_to_product_reference": "7Client-7.9.Z"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.ppc64le as a component of Red Hat Enterprise Linux Client (v. 7)",
          "product_id": "7Client-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.ppc64le"
        },
        "product_reference": "wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.ppc64le",
        "relates_to_product_reference": "7Client-7.9.Z"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.s390x as a component of Red Hat Enterprise Linux Client (v. 7)",
          "product_id": "7Client-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.s390x"
        },
        "product_reference": "wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.s390x",
        "relates_to_product_reference": "7Client-7.9.Z"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.x86_64 as a component of Red Hat Enterprise Linux Client (v. 7)",
          "product_id": "7Client-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.x86_64"
        },
        "product_reference": "wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.x86_64",
        "relates_to_product_reference": "7Client-7.9.Z"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "wpa_supplicant-1:2.6-12.el7_9.2.ppc64 as a component of Red Hat Enterprise Linux Server (v. 7)",
          "product_id": "7Server-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.ppc64"
        },
        "product_reference": "wpa_supplicant-1:2.6-12.el7_9.2.ppc64",
        "relates_to_product_reference": "7Server-7.9.Z"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "wpa_supplicant-1:2.6-12.el7_9.2.ppc64le as a component of Red Hat Enterprise Linux Server (v. 7)",
          "product_id": "7Server-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.ppc64le"
        },
        "product_reference": "wpa_supplicant-1:2.6-12.el7_9.2.ppc64le",
        "relates_to_product_reference": "7Server-7.9.Z"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "wpa_supplicant-1:2.6-12.el7_9.2.s390x as a component of Red Hat Enterprise Linux Server (v. 7)",
          "product_id": "7Server-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.s390x"
        },
        "product_reference": "wpa_supplicant-1:2.6-12.el7_9.2.s390x",
        "relates_to_product_reference": "7Server-7.9.Z"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "wpa_supplicant-1:2.6-12.el7_9.2.src as a component of Red Hat Enterprise Linux Server (v. 7)",
          "product_id": "7Server-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.src"
        },
        "product_reference": "wpa_supplicant-1:2.6-12.el7_9.2.src",
        "relates_to_product_reference": "7Server-7.9.Z"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "wpa_supplicant-1:2.6-12.el7_9.2.x86_64 as a component of Red Hat Enterprise Linux Server (v. 7)",
          "product_id": "7Server-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.x86_64"
        },
        "product_reference": "wpa_supplicant-1:2.6-12.el7_9.2.x86_64",
        "relates_to_product_reference": "7Server-7.9.Z"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.ppc64 as a component of Red Hat Enterprise Linux Server (v. 7)",
          "product_id": "7Server-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.ppc64"
        },
        "product_reference": "wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.ppc64",
        "relates_to_product_reference": "7Server-7.9.Z"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.ppc64le as a component of Red Hat Enterprise Linux Server (v. 7)",
          "product_id": "7Server-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.ppc64le"
        },
        "product_reference": "wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.ppc64le",
        "relates_to_product_reference": "7Server-7.9.Z"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.s390x as a component of Red Hat Enterprise Linux Server (v. 7)",
          "product_id": "7Server-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.s390x"
        },
        "product_reference": "wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.s390x",
        "relates_to_product_reference": "7Server-7.9.Z"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.x86_64 as a component of Red Hat Enterprise Linux Server (v. 7)",
          "product_id": "7Server-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.x86_64"
        },
        "product_reference": "wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.x86_64",
        "relates_to_product_reference": "7Server-7.9.Z"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "wpa_supplicant-1:2.6-12.el7_9.2.ppc64 as a component of Red Hat Enterprise Linux Workstation (v. 7)",
          "product_id": "7Workstation-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.ppc64"
        },
        "product_reference": "wpa_supplicant-1:2.6-12.el7_9.2.ppc64",
        "relates_to_product_reference": "7Workstation-7.9.Z"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "wpa_supplicant-1:2.6-12.el7_9.2.ppc64le as a component of Red Hat Enterprise Linux Workstation (v. 7)",
          "product_id": "7Workstation-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.ppc64le"
        },
        "product_reference": "wpa_supplicant-1:2.6-12.el7_9.2.ppc64le",
        "relates_to_product_reference": "7Workstation-7.9.Z"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "wpa_supplicant-1:2.6-12.el7_9.2.s390x as a component of Red Hat Enterprise Linux Workstation (v. 7)",
          "product_id": "7Workstation-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.s390x"
        },
        "product_reference": "wpa_supplicant-1:2.6-12.el7_9.2.s390x",
        "relates_to_product_reference": "7Workstation-7.9.Z"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "wpa_supplicant-1:2.6-12.el7_9.2.src as a component of Red Hat Enterprise Linux Workstation (v. 7)",
          "product_id": "7Workstation-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.src"
        },
        "product_reference": "wpa_supplicant-1:2.6-12.el7_9.2.src",
        "relates_to_product_reference": "7Workstation-7.9.Z"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "wpa_supplicant-1:2.6-12.el7_9.2.x86_64 as a component of Red Hat Enterprise Linux Workstation (v. 7)",
          "product_id": "7Workstation-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.x86_64"
        },
        "product_reference": "wpa_supplicant-1:2.6-12.el7_9.2.x86_64",
        "relates_to_product_reference": "7Workstation-7.9.Z"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.ppc64 as a component of Red Hat Enterprise Linux Workstation (v. 7)",
          "product_id": "7Workstation-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.ppc64"
        },
        "product_reference": "wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.ppc64",
        "relates_to_product_reference": "7Workstation-7.9.Z"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.ppc64le as a component of Red Hat Enterprise Linux Workstation (v. 7)",
          "product_id": "7Workstation-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.ppc64le"
        },
        "product_reference": "wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.ppc64le",
        "relates_to_product_reference": "7Workstation-7.9.Z"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.s390x as a component of Red Hat Enterprise Linux Workstation (v. 7)",
          "product_id": "7Workstation-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.s390x"
        },
        "product_reference": "wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.s390x",
        "relates_to_product_reference": "7Workstation-7.9.Z"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.x86_64 as a component of Red Hat Enterprise Linux Workstation (v. 7)",
          "product_id": "7Workstation-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.x86_64"
        },
        "product_reference": "wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.x86_64",
        "relates_to_product_reference": "7Workstation-7.9.Z"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2021-27803",
      "cwe": {
        "id": "CWE-416",
        "name": "Use After Free"
      },
      "discovery_date": "2021-02-25T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1933361"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in the wpa_supplicant, in the way it processes P2P (Wi-Fi Direct) provision discovery requests. This flaw allows an attacker who is within radio range of the device running P2P discovery to cause termination of the wpa_supplicant process or potentially cause code execution. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "wpa_supplicant: Use-after-free in P2P provision discovery processing",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "An attacker (or a system controlled by the attacker) needs to be within radio range of the vulnerable system to send a set of suitably constructed management frames that trigger the corner case to be reached in the management of the P2P peer table.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "7Client-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.ppc64",
          "7Client-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.ppc64le",
          "7Client-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.s390x",
          "7Client-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.src",
          "7Client-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.x86_64",
          "7Client-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.ppc64",
          "7Client-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.ppc64le",
          "7Client-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.s390x",
          "7Client-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.x86_64",
          "7Server-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.ppc64",
          "7Server-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.ppc64le",
          "7Server-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.s390x",
          "7Server-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.src",
          "7Server-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.x86_64",
          "7Server-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.ppc64",
          "7Server-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.ppc64le",
          "7Server-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.s390x",
          "7Server-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.x86_64",
          "7Workstation-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.ppc64",
          "7Workstation-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.ppc64le",
          "7Workstation-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.s390x",
          "7Workstation-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.src",
          "7Workstation-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.x86_64",
          "7Workstation-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.ppc64",
          "7Workstation-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.ppc64le",
          "7Workstation-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.s390x",
          "7Workstation-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2021-27803"
        },
        {
          "category": "external",
          "summary": "RHBZ#1933361",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1933361"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2021-27803",
          "url": "https://www.cve.org/CVERecord?id=CVE-2021-27803"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2021-27803",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-27803"
        },
        {
          "category": "external",
          "summary": "https://w1.fi/security/2021-1/wpa_supplicant-p2p-provision-discovery-processing-vulnerability.txt",
          "url": "https://w1.fi/security/2021-1/wpa_supplicant-p2p-provision-discovery-processing-vulnerability.txt"
        }
      ],
      "release_date": "2021-02-25T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2021-03-10T20:03:20+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
          "product_ids": [
            "7Client-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.ppc64",
            "7Client-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.ppc64le",
            "7Client-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.s390x",
            "7Client-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.src",
            "7Client-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.x86_64",
            "7Client-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.ppc64",
            "7Client-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.ppc64le",
            "7Client-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.s390x",
            "7Client-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.x86_64",
            "7Server-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.ppc64",
            "7Server-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.ppc64le",
            "7Server-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.s390x",
            "7Server-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.src",
            "7Server-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.x86_64",
            "7Server-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.ppc64",
            "7Server-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.ppc64le",
            "7Server-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.s390x",
            "7Server-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.x86_64",
            "7Workstation-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.ppc64",
            "7Workstation-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.ppc64le",
            "7Workstation-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.s390x",
            "7Workstation-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.src",
            "7Workstation-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.x86_64",
            "7Workstation-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.ppc64",
            "7Workstation-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.ppc64le",
            "7Workstation-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.s390x",
            "7Workstation-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2021:0808"
        },
        {
          "category": "workaround",
          "details": "Disable the P2P (control interface command \"P2P_SET disabled 1\" or \"p2p_disabled=1\" in (each, if multiple interfaces used) wpa_supplicant configuration file)",
          "product_ids": [
            "7Client-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.ppc64",
            "7Client-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.ppc64le",
            "7Client-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.s390x",
            "7Client-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.src",
            "7Client-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.x86_64",
            "7Client-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.ppc64",
            "7Client-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.ppc64le",
            "7Client-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.s390x",
            "7Client-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.x86_64",
            "7Server-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.ppc64",
            "7Server-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.ppc64le",
            "7Server-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.s390x",
            "7Server-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.src",
            "7Server-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.x86_64",
            "7Server-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.ppc64",
            "7Server-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.ppc64le",
            "7Server-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.s390x",
            "7Server-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.x86_64",
            "7Workstation-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.ppc64",
            "7Workstation-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.ppc64le",
            "7Workstation-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.s390x",
            "7Workstation-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.src",
            "7Workstation-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.x86_64",
            "7Workstation-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.ppc64",
            "7Workstation-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.ppc64le",
            "7Workstation-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.s390x",
            "7Workstation-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "ADJACENT_NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "7Client-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.ppc64",
            "7Client-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.ppc64le",
            "7Client-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.s390x",
            "7Client-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.src",
            "7Client-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.x86_64",
            "7Client-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.ppc64",
            "7Client-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.ppc64le",
            "7Client-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.s390x",
            "7Client-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.x86_64",
            "7Server-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.ppc64",
            "7Server-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.ppc64le",
            "7Server-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.s390x",
            "7Server-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.src",
            "7Server-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.x86_64",
            "7Server-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.ppc64",
            "7Server-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.ppc64le",
            "7Server-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.s390x",
            "7Server-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.x86_64",
            "7Workstation-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.ppc64",
            "7Workstation-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.ppc64le",
            "7Workstation-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.s390x",
            "7Workstation-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.src",
            "7Workstation-7.9.Z:wpa_supplicant-1:2.6-12.el7_9.2.x86_64",
            "7Workstation-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.ppc64",
            "7Workstation-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.ppc64le",
            "7Workstation-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.s390x",
            "7Workstation-7.9.Z:wpa_supplicant-debuginfo-1:2.6-12.el7_9.2.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "wpa_supplicant: Use-after-free in P2P provision discovery processing"
    }
  ]
}

CVE-2021-27803 (GCVE-0-2021-27803)

Vulnerability from cvelistv5 – Published: 2021-02-26 22:11 – Updated: 2025-12-18 14:57

Summary

A vulnerability was discovered in how p2p/p2p_pd.c in wpa_supplicant before 2.10 processes P2P (Wi-Fi Direct) provision discovery requests. It could result in denial of service or other impact (potentially execution of arbitrary code), for an attacker within radio range.

Severity ?

7.5 (High)


                        
                          CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE

Assigner

mitre

References

9 references

URL	Tags
https://www.openwall.com/lists/oss-security/2021/…	x_refsource_MISC
https://w1.fi/security/2021-1/wpa_supplicant-p2p-…	x_refsource_MISC
https://w1.fi/security/2021-1/0001-P2P-Fix-a-corn…	x_refsource_MISC
http://www.openwall.com/lists/oss-security/2021/02/27/1	mailing-listx_refsource_MLIST
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://lists.debian.org/debian-lts-announce/2021…	mailing-listx_refsource_MLIST
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://www.debian.org/security/2021/dsa-4898	vendor-advisoryx_refsource_DEBIAN

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T21:33:15.747Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.openwall.com/lists/oss-security/2021/02/25/3"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://w1.fi/security/2021-1/wpa_supplicant-p2p-provision-discovery-processing-vulnerability.txt"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://w1.fi/security/2021-1/0001-P2P-Fix-a-corner-case-in-peer-addition-based-on-PD-R.patch"
          },
          {
            "name": "[oss-security] 20210227 Re: wpa_supplicant P2P provision discovery processing vulnerability",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "http://www.openwall.com/lists/oss-security/2021/02/27/1"
          },
          {
            "name": "FEDORA-2021-3430f96019",
            "tags": [
              "vendor-advisory",
              "x_refsource_FEDORA",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KOGP2VIVVXXQ6CZ2HU4DKGPDB4WR24XF/"
          },
          {
            "name": "[debian-lts-announce] 20210302 [SECURITY] [DLA 2581-1] wpa security update",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2021/03/msg00003.html"
          },
          {
            "name": "FEDORA-2021-99cad2b81f",
            "tags": [
              "vendor-advisory",
              "x_refsource_FEDORA",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IZGUR5XFHATVXTRAEJMODS7ROYHA56NX/"
          },
          {
            "name": "FEDORA-2021-9b00febe54",
            "tags": [
              "vendor-advisory",
              "x_refsource_FEDORA",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SEHS2CFGH3KCSNPHBHNGN5SGV6QPMLZ4/"
          },
          {
            "name": "DSA-4898",
            "tags": [
              "vendor-advisory",
              "x_refsource_DEBIAN",
              "x_transferred"
            ],
            "url": "https://www.debian.org/security/2021/dsa-4898"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "HIGH",
              "attackVector": "ADJACENT_NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 7.5,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2021-27803",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-12-18T14:57:24.188771Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "description": "CWE-noinfo Not enough information",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-12-18T14:57:29.648Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability was discovered in how p2p/p2p_pd.c in wpa_supplicant before 2.10 processes P2P (Wi-Fi Direct) provision discovery requests. It could result in denial of service or other impact (potentially execution of arbitrary code), for an attacker within radio range."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-04-22T23:06:22.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://www.openwall.com/lists/oss-security/2021/02/25/3"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://w1.fi/security/2021-1/wpa_supplicant-p2p-provision-discovery-processing-vulnerability.txt"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://w1.fi/security/2021-1/0001-P2P-Fix-a-corner-case-in-peer-addition-based-on-PD-R.patch"
        },
        {
          "name": "[oss-security] 20210227 Re: wpa_supplicant P2P provision discovery processing vulnerability",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "http://www.openwall.com/lists/oss-security/2021/02/27/1"
        },
        {
          "name": "FEDORA-2021-3430f96019",
          "tags": [
            "vendor-advisory",
            "x_refsource_FEDORA"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KOGP2VIVVXXQ6CZ2HU4DKGPDB4WR24XF/"
        },
        {
          "name": "[debian-lts-announce] 20210302 [SECURITY] [DLA 2581-1] wpa security update",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2021/03/msg00003.html"
        },
        {
          "name": "FEDORA-2021-99cad2b81f",
          "tags": [
            "vendor-advisory",
            "x_refsource_FEDORA"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IZGUR5XFHATVXTRAEJMODS7ROYHA56NX/"
        },
        {
          "name": "FEDORA-2021-9b00febe54",
          "tags": [
            "vendor-advisory",
            "x_refsource_FEDORA"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SEHS2CFGH3KCSNPHBHNGN5SGV6QPMLZ4/"
        },
        {
          "name": "DSA-4898",
          "tags": [
            "vendor-advisory",
            "x_refsource_DEBIAN"
          ],
          "url": "https://www.debian.org/security/2021/dsa-4898"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2021-27803",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "n/a",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "n/a"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "A vulnerability was discovered in how p2p/p2p_pd.c in wpa_supplicant before 2.10 processes P2P (Wi-Fi Direct) provision discovery requests. It could result in denial of service or other impact (potentially execution of arbitrary code), for an attacker within radio range."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "n/a"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://www.openwall.com/lists/oss-security/2021/02/25/3",
              "refsource": "MISC",
              "url": "https://www.openwall.com/lists/oss-security/2021/02/25/3"
            },
            {
              "name": "https://w1.fi/security/2021-1/wpa_supplicant-p2p-provision-discovery-processing-vulnerability.txt",
              "refsource": "MISC",
              "url": "https://w1.fi/security/2021-1/wpa_supplicant-p2p-provision-discovery-processing-vulnerability.txt"
            },
            {
              "name": "https://w1.fi/security/2021-1/0001-P2P-Fix-a-corner-case-in-peer-addition-based-on-PD-R.patch",
              "refsource": "MISC",
              "url": "https://w1.fi/security/2021-1/0001-P2P-Fix-a-corner-case-in-peer-addition-based-on-PD-R.patch"
            },
            {
              "name": "[oss-security] 20210227 Re: wpa_supplicant P2P provision discovery processing vulnerability",
              "refsource": "MLIST",
              "url": "http://www.openwall.com/lists/oss-security/2021/02/27/1"
            },
            {
              "name": "FEDORA-2021-3430f96019",
              "refsource": "FEDORA",
              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KOGP2VIVVXXQ6CZ2HU4DKGPDB4WR24XF/"
            },
            {
              "name": "[debian-lts-announce] 20210302 [SECURITY] [DLA 2581-1] wpa security update",
              "refsource": "MLIST",
              "url": "https://lists.debian.org/debian-lts-announce/2021/03/msg00003.html"
            },
            {
              "name": "FEDORA-2021-99cad2b81f",
              "refsource": "FEDORA",
              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IZGUR5XFHATVXTRAEJMODS7ROYHA56NX/"
            },
            {
              "name": "FEDORA-2021-9b00febe54",
              "refsource": "FEDORA",
              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SEHS2CFGH3KCSNPHBHNGN5SGV6QPMLZ4/"
            },
            {
              "name": "DSA-4898",
              "refsource": "DEBIAN",
              "url": "https://www.debian.org/security/2021/dsa-4898"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2021-27803",
    "datePublished": "2021-02-26T22:11:27.000Z",
    "dateReserved": "2021-02-26T00:00:00.000Z",
    "dateUpdated": "2025-12-18T14:57:29.648Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

RHSA-2021:0808

CVE-2021-27803 (GCVE-0-2021-27803)

Tags

Sightings

Nomenclature