GSD-2020-10713

Vulnerability from gsd - Updated: 2023-12-13 01:22
Details
A flaw was found in grub2, prior to version 2.06. An attacker may use the GRUB 2 flaw to hijack and tamper the GRUB verification process. This flaw also allows the bypass of Secure Boot protections. In order to load an untrusted or modified kernel, an attacker would first need to establish access to the system such as gaining physical access, obtain the ability to alter a pxe-boot network, or have remote access to a networked system with root access. With this access, an attacker could then craft a string to cause a buffer overflow by injecting a malicious payload that leads to arbitrary code execution within GRUB. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Aliases
Aliases
CVE-2020-10713
To clipboard 

{
  "GSD": {
    "alias": "CVE-2020-10713",
    "description": "A flaw was found in grub2, prior to version 2.06. An attacker may use the GRUB 2 flaw to hijack and tamper the GRUB verification process. This flaw also allows the bypass of Secure Boot protections. In order to load an untrusted or modified kernel, an attacker would first need to establish access to the system such as gaining physical access, obtain the ability to alter a pxe-boot network, or have remote access to a networked system with root access. With this access, an attacker could then craft a string to cause a buffer overflow by injecting a malicious payload that leads to arbitrary code execution within GRUB. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.",
    "id": "GSD-2020-10713",
    "references": [
      "https://www.suse.com/security/cve/CVE-2020-10713.html",
      "https://www.debian.org/security/2020/dsa-4735",
      "https://access.redhat.com/errata/RHSA-2020:4172",
      "https://access.redhat.com/errata/RHSA-2020:4115",
      "https://access.redhat.com/errata/RHSA-2020:3276",
      "https://access.redhat.com/errata/RHSA-2020:3275",
      "https://access.redhat.com/errata/RHSA-2020:3274",
      "https://access.redhat.com/errata/RHSA-2020:3273",
      "https://access.redhat.com/errata/RHSA-2020:3271",
      "https://access.redhat.com/errata/RHSA-2020:3227",
      "https://access.redhat.com/errata/RHSA-2020:3223",
      "https://access.redhat.com/errata/RHSA-2020:3217",
      "https://access.redhat.com/errata/RHSA-2020:3216",
      "https://ubuntu.com/security/CVE-2020-10713",
      "https://advisories.mageia.org/CVE-2020-10713.html",
      "https://linux.oracle.com/cve/CVE-2020-10713.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2020-10713"
      ],
      "details": "A flaw was found in grub2, prior to version 2.06. An attacker may use the GRUB 2 flaw to hijack and tamper the GRUB verification process. This flaw also allows the bypass of Secure Boot protections. In order to load an untrusted or modified kernel, an attacker would first need to establish access to the system such as gaining physical access, obtain the ability to alter a pxe-boot network, or have remote access to a networked system with root access. With this access, an attacker could then craft a string to cause a buffer overflow by injecting a malicious payload that leads to arbitrary code execution within GRUB. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.",
      "id": "GSD-2020-10713",
      "modified": "2023-12-13T01:22:04.098611Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "secalert@redhat.com",
        "ID": "CVE-2020-10713",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "Grub",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "All grub2 versions before 2.06"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "n/a"
            }
          ]
        }
      },
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "value": "A flaw was found in grub2, prior to version 2.06. An attacker may use the GRUB 2 flaw to hijack and tamper the GRUB verification process. This flaw also allows the bypass of Secure Boot protections. In order to load an untrusted or modified kernel, an attacker would first need to establish access to the system such as gaining physical access, obtain the ability to alter a pxe-boot network, or have remote access to a networked system with root access. With this access, an attacker could then craft a string to cause a buffer overflow by injecting a malicious payload that leads to arbitrary code execution within GRUB. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability."
          }
        ]
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "Out-of-bounds Write leading to Improper Neutralization of Special Elements used in an OS Command (\u0027OS Command Injection\u0027)"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "DSA-4735",
            "refsource": "DEBIAN",
            "url": "https://www.debian.org/security/2020/dsa-4735"
          },
          {
            "name": "[oss-security] 20200729 multiple secure boot grub2 and linux kernel vulnerabilities",
            "refsource": "MLIST",
            "url": "http://www.openwall.com/lists/oss-security/2020/07/29/3"
          },
          {
            "name": "https://bugzilla.redhat.com/show_bug.cgi?id=1825243",
            "refsource": "MISC",
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1825243"
          },
          {
            "name": "VU#174059",
            "refsource": "CERT-VN",
            "url": "https://www.kb.cert.org/vuls/id/174059"
          },
          {
            "name": "https://security.netapp.com/advisory/ntap-20200731-0008/",
            "refsource": "CONFIRM",
            "url": "https://security.netapp.com/advisory/ntap-20200731-0008/"
          },
          {
            "name": "USN-4432-1",
            "refsource": "UBUNTU",
            "url": "https://usn.ubuntu.com/4432-1/"
          },
          {
            "name": "20200804 GRUB2 Arbitrary Code Execution Vulnerability",
            "refsource": "CISCO",
            "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-grub2-code-exec-xLePCAPY"
          },
          {
            "name": "openSUSE-SU-2020:1169",
            "refsource": "SUSE",
            "url": "http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.html"
          },
          {
            "name": "openSUSE-SU-2020:1168",
            "refsource": "SUSE",
            "url": "http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.html"
          },
          {
            "name": "https://eclypsium.com/2020/07/29/theres-a-hole-in-the-boot/",
            "refsource": "MISC",
            "url": "https://eclypsium.com/2020/07/29/theres-a-hole-in-the-boot/"
          },
          {
            "name": "https://kb.vmware.com/s/article/80181",
            "refsource": "MISC",
            "url": "https://kb.vmware.com/s/article/80181"
          },
          {
            "name": "https://cve.openeuler.org/#/CVEInfo/CVE-2020-10713",
            "refsource": "MISC",
            "url": "https://cve.openeuler.org/#/CVEInfo/CVE-2020-10713"
          },
          {
            "name": "GLSA-202104-05",
            "refsource": "GENTOO",
            "url": "https://security.gentoo.org/glsa/202104-05"
          }
        ]
      }
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:gnu:grub2:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "2.06",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          },
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              }
            ],
            "operator": "OR"
          },
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              }
            ],
            "operator": "OR"
          },
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:o:vmware:photon_os:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "2.0",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "secalert@redhat.com",
          "ID": "CVE-2020-10713"
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "en",
              "value": "A flaw was found in grub2, prior to version 2.06. An attacker may use the GRUB 2 flaw to hijack and tamper the GRUB verification process. This flaw also allows the bypass of Secure Boot protections. In order to load an untrusted or modified kernel, an attacker would first need to establish access to the system such as gaining physical access, obtain the ability to alter a pxe-boot network, or have remote access to a networked system with root access. With this access, an attacker could then craft a string to cause a buffer overflow by injecting a malicious payload that leads to arbitrary code execution within GRUB. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-120"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://bugzilla.redhat.com/show_bug.cgi?id=1825243",
              "refsource": "MISC",
              "tags": [
                "Issue Tracking",
                "Third Party Advisory"
              ],
              "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1825243"
            },
            {
              "name": "VU#174059",
              "refsource": "CERT-VN",
              "tags": [
                "Third Party Advisory",
                "US Government Resource"
              ],
              "url": "https://www.kb.cert.org/vuls/id/174059"
            },
            {
              "name": "https://security.netapp.com/advisory/ntap-20200731-0008/",
              "refsource": "CONFIRM",
              "tags": [
                "Third Party Advisory"
              ],
              "url": "https://security.netapp.com/advisory/ntap-20200731-0008/"
            },
            {
              "name": "USN-4432-1",
              "refsource": "UBUNTU",
              "tags": [
                "Third Party Advisory"
              ],
              "url": "https://usn.ubuntu.com/4432-1/"
            },
            {
              "name": "20200804 GRUB2 Arbitrary Code Execution Vulnerability",
              "refsource": "CISCO",
              "tags": [
                "Third Party Advisory"
              ],
              "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-grub2-code-exec-xLePCAPY"
            },
            {
              "name": "openSUSE-SU-2020:1169",
              "refsource": "SUSE",
              "tags": [
                "Mailing List",
                "Third Party Advisory"
              ],
              "url": "http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.html"
            },
            {
              "name": "openSUSE-SU-2020:1168",
              "refsource": "SUSE",
              "tags": [
                "Mailing List",
                "Third Party Advisory"
              ],
              "url": "http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.html"
            },
            {
              "name": "https://eclypsium.com/2020/07/29/theres-a-hole-in-the-boot/",
              "refsource": "MISC",
              "tags": [
                "Technical Description",
                "Third Party Advisory"
              ],
              "url": "https://eclypsium.com/2020/07/29/theres-a-hole-in-the-boot/"
            },
            {
              "name": "[oss-security] 20200729 multiple secure boot grub2 and linux kernel vulnerabilities",
              "refsource": "MLIST",
              "tags": [
                "Mailing List",
                "Third Party Advisory"
              ],
              "url": "http://www.openwall.com/lists/oss-security/2020/07/29/3"
            },
            {
              "name": "DSA-4735",
              "refsource": "DEBIAN",
              "tags": [
                "Third Party Advisory"
              ],
              "url": "https://www.debian.org/security/2020/dsa-4735"
            },
            {
              "name": "https://kb.vmware.com/s/article/80181",
              "refsource": "MISC",
              "tags": [
                "Third Party Advisory"
              ],
              "url": "https://kb.vmware.com/s/article/80181"
            },
            {
              "name": "https://cve.openeuler.org/#/CVEInfo/CVE-2020-10713",
              "refsource": "MISC",
              "tags": [
                "Broken Link"
              ],
              "url": "https://cve.openeuler.org/#/CVEInfo/CVE-2020-10713"
            },
            {
              "name": "GLSA-202104-05",
              "refsource": "GENTOO",
              "tags": [
                "Third Party Advisory"
              ],
              "url": "https://security.gentoo.org/glsa/202104-05"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "LOCAL",
            "authentication": "NONE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 4.6,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P",
            "version": "2.0"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 6.4,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 8.2,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "HIGH",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 1.5,
          "impactScore": 6.0
        }
      },
      "lastModifiedDate": "2022-11-16T04:06Z",
      "publishedDate": "2020-07-30T13:15Z"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

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.