Vulnerability-Lookup

CNVD-2021-103405

Vulnerability from cnvd - Published: 2021-12-30

Title

Flatpak输入验证错误漏洞

Description

Flatpak是一套用于Linux桌面应用计算机环境的应用程序虚拟化系统。 Flatpak 1.12.0和1.10.4之前版本存在输入验证错误漏洞，该漏洞源于可直接访问AF_UNIX套接字（如Wayland、Pipewire或Pipewire pulse使用的套接字）的Flatpak应用程序可以欺骗门户和其他主机操作系统服务，使其将Flatpak应用程序视为普通的、非沙盒主机操作系统进程。目前没有详细漏洞细节提供。

Severity

中

Patch Name

Flatpak输入验证错误漏洞的补丁

Patch Description

Formal description

厂商已发布了漏洞修复程序，请及时关注更新： https://github.com/flatpak/flatpak/security/advisories/GHSA-67h7-w3jq-vh4q

Reference

https://github.com/flatpak/flatpak/commit/1330662f33a55e88bfe18e76de28b7922d91a999

Impacted products

Name
['Flatpak Flatpak <1.12.0', 'Flatpak Flatpak <1.10.4']

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-41133"
    }
  },
  "description": "Flatpak\u662f\u4e00\u5957\u7528\u4e8eLinux\u684c\u9762\u5e94\u7528\u8ba1\u7b97\u673a\u73af\u5883\u7684\u5e94\u7528\u7a0b\u5e8f\u865a\u62df\u5316\u7cfb\u7edf\u3002\n\nFlatpak 1.12.0\u548c1.10.4\u4e4b\u524d\u7248\u672c\u5b58\u5728\u8f93\u5165\u9a8c\u8bc1\u9519\u8bef\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u53ef\u76f4\u63a5\u8bbf\u95eeAF_UNIX\u5957\u63a5\u5b57\uff08\u5982Wayland\u3001Pipewire\u6216Pipewire pulse\u4f7f\u7528\u7684\u5957\u63a5\u5b57\uff09\u7684Flatpak\u5e94\u7528\u7a0b\u5e8f\u53ef\u4ee5\u6b3a\u9a97\u95e8\u6237\u548c\u5176\u4ed6\u4e3b\u673a\u64cd\u4f5c\u7cfb\u7edf\u670d\u52a1\uff0c\u4f7f\u5176\u5c06Flatpak\u5e94\u7528\u7a0b\u5e8f\u89c6\u4e3a\u666e\u901a\u7684\u3001\u975e\u6c99\u76d2\u4e3b\u673a\u64cd\u4f5c\u7cfb\u7edf\u8fdb\u7a0b\u3002\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u6f0f\u6d1e\u7ec6\u8282\u63d0\u4f9b\u3002",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://github.com/flatpak/flatpak/security/advisories/GHSA-67h7-w3jq-vh4q",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-103405",
  "openTime": "2021-12-30",
  "patchDescription": "Flatpak\u662f\u4e00\u5957\u7528\u4e8eLinux\u684c\u9762\u5e94\u7528\u8ba1\u7b97\u673a\u73af\u5883\u7684\u5e94\u7528\u7a0b\u5e8f\u865a\u62df\u5316\u7cfb\u7edf\u3002\r\n\r\nFlatpak 1.12.0\u548c1.10.4\u4e4b\u524d\u7248\u672c\u5b58\u5728\u8f93\u5165\u9a8c\u8bc1\u9519\u8bef\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u53ef\u76f4\u63a5\u8bbf\u95eeAF_UNIX\u5957\u63a5\u5b57\uff08\u5982Wayland\u3001Pipewire\u6216Pipewire pulse\u4f7f\u7528\u7684\u5957\u63a5\u5b57\uff09\u7684Flatpak\u5e94\u7528\u7a0b\u5e8f\u53ef\u4ee5\u6b3a\u9a97\u95e8\u6237\u548c\u5176\u4ed6\u4e3b\u673a\u64cd\u4f5c\u7cfb\u7edf\u670d\u52a1\uff0c\u4f7f\u5176\u5c06Flatpak\u5e94\u7528\u7a0b\u5e8f\u89c6\u4e3a\u666e\u901a\u7684\u3001\u975e\u6c99\u76d2\u4e3b\u673a\u64cd\u4f5c\u7cfb\u7edf\u8fdb\u7a0b\u3002\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u6f0f\u6d1e\u7ec6\u8282\u63d0\u4f9b\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "Flatpak\u8f93\u5165\u9a8c\u8bc1\u9519\u8bef\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": [
      "Flatpak Flatpak \u003c1.12.0",
      "Flatpak Flatpak \u003c1.10.4"
    ]
  },
  "referenceLink": "https://github.com/flatpak/flatpak/commit/1330662f33a55e88bfe18e76de28b7922d91a999",
  "serverity": "\u4e2d",
  "submitTime": "2021-10-11",
  "title": "Flatpak\u8f93\u5165\u9a8c\u8bc1\u9519\u8bef\u6f0f\u6d1e"
}

CVE-2021-41133 (GCVE-0-2021-41133)

Vulnerability from cvelistv5 – Published: 2021-10-08 00:00 – Updated: 2024-08-04 02:59

Title

Sandbox bypass via recent VFS-manipulating syscalls

Summary

Flatpak is a system for building, distributing, and running sandboxed desktop applications on Linux. In versions prior to 1.10.4 and 1.12.0, Flatpak apps with direct access to AF_UNIX sockets such as those used by Wayland, Pipewire or pipewire-pulse can trick portals and other host-OS services into treating the Flatpak app as though it was an ordinary, non-sandboxed host-OS process. They can do this by manipulating the VFS using recent mount-related syscalls that are not blocked by Flatpak's denylist seccomp filter, in order to substitute a crafted `/.flatpak-info` or make that file disappear entirely. Flatpak apps that act as clients for AF_UNIX sockets such as those used by Wayland, Pipewire or pipewire-pulse can escalate the privileges that the corresponding services will believe the Flatpak app has. Note that protocols that operate entirely over the D-Bus session bus (user bus), system bus or accessibility bus are not affected by this. This is due to the use of a proxy process `xdg-dbus-proxy`, whose VFS cannot be manipulated by the Flatpak app, when interacting with these buses. Patches exist for versions 1.10.4 and 1.12.0, and as of time of publication, a patch for version 1.8.2 is being planned. There are no workarounds aside from upgrading to a patched version.

Severity

8.8 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-07-30 16:07 UTC

CWE

CWE-20 - Improper Input Validation

Assigner

GitHub_M mitre root

References

14 references

URL	Tags
https://github.com/flatpak/flatpak/security/advis…
https://github.com/flatpak/flatpak/commit/1330662…
https://github.com/flatpak/flatpak/commit/26b1248…
https://github.com/flatpak/flatpak/commit/462fca2…
https://github.com/flatpak/flatpak/commit/4c34815…
https://github.com/flatpak/flatpak/commit/89ae9fe…
https://github.com/flatpak/flatpak/commit/9766ee0…
https://github.com/flatpak/flatpak/commit/a10f52a…
https://github.com/flatpak/flatpak/commit/e26ac75…
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://www.debian.org/security/2021/dsa-4984	vendor-advisory
http://www.openwall.com/lists/oss-security/2021/10/26/9	mailing-list
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://security.gentoo.org/glsa/202312-12	vendor-advisory

Impacted products

5 products

Vendor	Product	Version
flatpak	flatpak	Affected: >= 1.8.0, <= 1.8.2 Affected: >= 1.10.0, < 1.10.4 Affected: >= 1.11.0, < 1.12.0
flatpak	flatpak	Affected: 1.10.0 , ≤ 1.10.4 (custom) Affected: 1.11.0 , < 1.12.0 (custom) Affected: 1.8.0 , < 1.8.2 (custom) cpe:2.3:a:flatpak:flatpak:1.10.0:::::::* cpe:2.3:a:flatpak:flatpak:1.11.0:::::::* cpe:2.3:a:flatpak:flatpak:1.8.0:::::::*
fedoraproject	fedora	Affected: 34 cpe:2.3:o:fedoraproject:fedora:34:::::::*
fedoraproject	fedora	Affected: 33 cpe:2.3:o:fedoraproject:fedora:33:::::::*
debian	debian_linux	Affected: 11.0 cpe:2.3:o:debian:debian_linux:11.0:::::::*

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "affected": [
          {
            "cpes": [
              "cpe:2.3:a:flatpak:flatpak:1.10.0:*:*:*:*:*:*:*",
              "cpe:2.3:a:flatpak:flatpak:1.11.0:*:*:*:*:*:*:*",
              "cpe:2.3:a:flatpak:flatpak:1.8.0:*:*:*:*:*:*:*"
            ],
            "defaultStatus": "unknown",
            "product": "flatpak",
            "vendor": "flatpak",
            "versions": [
              {
                "lessThanOrEqual": "1.10.4",
                "status": "affected",
                "version": "1.10.0",
                "versionType": "custom"
              },
              {
                "lessThan": "1.12.0",
                "status": "affected",
                "version": "1.11.0",
                "versionType": "custom"
              },
              {
                "lessThan": "1.8.2",
                "status": "affected",
                "version": "1.8.0",
                "versionType": "custom"
              }
            ]
          },
          {
            "cpes": [
              "cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*"
            ],
            "defaultStatus": "unknown",
            "product": "fedora",
            "vendor": "fedoraproject",
            "versions": [
              {
                "status": "affected",
                "version": "34"
              }
            ]
          },
          {
            "cpes": [
              "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*"
            ],
            "defaultStatus": "unknown",
            "product": "fedora",
            "vendor": "fedoraproject",
            "versions": [
              {
                "status": "affected",
                "version": "33"
              }
            ]
          },
          {
            "cpes": [
              "cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*"
            ],
            "defaultStatus": "unknown",
            "product": "debian_linux",
            "vendor": "debian",
            "versions": [
              {
                "status": "affected",
                "version": "11.0"
              }
            ]
          }
        ],
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-41133",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-07-30T16:07:06.539565Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-07-30T16:14:27.263Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T02:59:31.388Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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        },
        "references": [
          {
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            ],
            "url": "https://github.com/flatpak/flatpak/security/advisories/GHSA-67h7-w3jq-vh4q"
          },
          {
            "tags": [
              "x_transferred"
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            "url": "https://github.com/flatpak/flatpak/commit/1330662f33a55e88bfe18e76de28b7922d91a999"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/flatpak/flatpak/commit/26b12484eb8a6219b9e7aa287b298a894b2f34ca"
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          {
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          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/flatpak/flatpak/commit/4c34815784e9ffda5733225c7d95824f96375e36"
          },
          {
            "tags": [
              "x_transferred"
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          },
          {
            "tags": [
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          },
          {
            "tags": [
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            "url": "https://github.com/flatpak/flatpak/commit/a10f52a7565c549612c92b8e736a6698a53db330"
          },
          {
            "tags": [
              "x_transferred"
            ],
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          },
          {
            "name": "FEDORA-2021-4b201d15e6",
            "tags": [
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              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R5656ONDP2MGKIJMKEC7N2NXCV27WGTC/"
          },
          {
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            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://www.debian.org/security/2021/dsa-4984"
          },
          {
            "name": "[oss-security] 20211026 WebKitGTK and WPE WebKit Security Advisory WSA-2021-0006",
            "tags": [
              "mailing-list",
              "x_transferred"
            ],
            "url": "http://www.openwall.com/lists/oss-security/2021/10/26/9"
          },
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            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T5DKCYRC6MFSTFCUP4DELCOUUP3SFEFX/"
          },
          {
            "name": "GLSA-202312-12",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://security.gentoo.org/glsa/202312-12"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "flatpak",
          "vendor": "flatpak",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 1.8.0, \u003c= 1.8.2"
            },
            {
              "status": "affected",
              "version": "\u003e= 1.10.0, \u003c 1.10.4"
            },
            {
              "status": "affected",
              "version": "\u003e= 1.11.0, \u003c 1.12.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Flatpak is a system for building, distributing, and running sandboxed desktop applications on Linux. In versions prior to 1.10.4 and 1.12.0, Flatpak apps with direct access to AF_UNIX sockets such as those used by Wayland, Pipewire or pipewire-pulse can trick portals and other host-OS services into treating the Flatpak app as though it was an ordinary, non-sandboxed host-OS process. They can do this by manipulating the VFS using recent mount-related syscalls that are not blocked by Flatpak\u0027s denylist seccomp filter, in order to substitute a crafted `/.flatpak-info` or make that file disappear entirely. Flatpak apps that act as clients for AF_UNIX sockets such as those used by Wayland, Pipewire or pipewire-pulse can escalate the privileges that the corresponding services will believe the Flatpak app has. Note that protocols that operate entirely over the D-Bus session bus (user bus), system bus or accessibility bus are not affected by this. This is due to the use of a proxy process `xdg-dbus-proxy`, whose VFS cannot be manipulated by the Flatpak app, when interacting with these buses. Patches exist for versions 1.10.4 and 1.12.0, and as of time of publication, a patch for version 1.8.2 is being planned. There are no workarounds aside from upgrading to a patched version."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-20",
              "description": "CWE-20: Improper Input Validation",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-12-23T10:06:26.199Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "url": "https://github.com/flatpak/flatpak/security/advisories/GHSA-67h7-w3jq-vh4q"
        },
        {
          "url": "https://github.com/flatpak/flatpak/commit/1330662f33a55e88bfe18e76de28b7922d91a999"
        },
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        },
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        },
        {
          "url": "https://github.com/flatpak/flatpak/commit/4c34815784e9ffda5733225c7d95824f96375e36"
        },
        {
          "url": "https://github.com/flatpak/flatpak/commit/89ae9fe74c6d445bb1b3a40e568d77cf5de47e48"
        },
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          "url": "https://github.com/flatpak/flatpak/commit/9766ee05b1425db397d2cf23afd24c7f6146a69f"
        },
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          "url": "https://github.com/flatpak/flatpak/commit/a10f52a7565c549612c92b8e736a6698a53db330"
        },
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          "url": "https://github.com/flatpak/flatpak/commit/e26ac7586c392b5eb35ff4609fe232c52523b2cf"
        },
        {
          "name": "FEDORA-2021-4b201d15e6",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R5656ONDP2MGKIJMKEC7N2NXCV27WGTC/"
        },
        {
          "name": "DSA-4984",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://www.debian.org/security/2021/dsa-4984"
        },
        {
          "name": "[oss-security] 20211026 WebKitGTK and WPE WebKit Security Advisory WSA-2021-0006",
          "tags": [
            "mailing-list"
          ],
          "url": "http://www.openwall.com/lists/oss-security/2021/10/26/9"
        },
        {
          "name": "FEDORA-2021-c5a9c85737",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T5DKCYRC6MFSTFCUP4DELCOUUP3SFEFX/"
        },
        {
          "name": "GLSA-202312-12",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://security.gentoo.org/glsa/202312-12"
        }
      ],
      "source": {
        "advisory": "GHSA-67h7-w3jq-vh4q",
        "discovery": "UNKNOWN"
      },
      "title": "Sandbox bypass via recent VFS-manipulating syscalls"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2021-41133",
    "datePublished": "2021-10-08T00:00:00.000Z",
    "dateReserved": "2021-09-15T00:00:00.000Z",
    "dateUpdated": "2024-08-04T02:59:31.388Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CNVD-2021-103405

CVE-2021-41133 (GCVE-0-2021-41133)

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Nomenclature

Related by attack behaviour