Vulnerability-Lookup

alsa-2022:7458

Vulnerability from osv_almalinux

Published

2022-11-08 00:00

Modified

2022-11-12 03:00

Summary

Moderate: flatpak-builder security and bug fix update

Details

Flatpak-builder is a tool for building flatpaks from sources.

Security Fix(es):

flatpak: flatpak-builder --mirror-screenshots-url can access files outside the build directory (CVE-2022-21682)

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.

Additional Changes:

For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.

References

URL

Type

	https://access.redhat.com/errata/RHSA-2022:7458	ADVISORY
	https://access.redhat.com/security/cve/CVE-2022-21682	REPORT
	https://bugzilla.redhat.com/2041592	REPORT
	https://errata.almalinux.org/8/ALSA-2022-7458.html	ADVISORY

JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
        "name": "flatpak-builder"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.0.14-2.el8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "Flatpak-builder is a tool for building flatpaks from sources.\n\nSecurity Fix(es):\n\n* flatpak: flatpak-builder --mirror-screenshots-url can access files outside the build directory (CVE-2022-21682)\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.\n\nAdditional Changes:\n\nFor detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.",
  "id": "ALSA-2022:7458",
  "modified": "2022-11-12T03:00:48Z",
  "published": "2022-11-08T00:00:00Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2022:7458"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2022-21682"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2041592"
    },
    {
      "type": "ADVISORY",
      "url": "https://errata.almalinux.org/8/ALSA-2022-7458.html"
    }
  ],
  "related": [
    "CVE-2022-21682"
  ],
  "summary": "Moderate: flatpak-builder security and bug fix update"
}

CVE-2022-21682 (GCVE-0-2022-21682)

Vulnerability from cvelistv5 – Published: 2022-01-13 00:00 – Updated: 2024-08-03 02:46

Title

flatpak-builder can access files outside the build directory.

Summary

Flatpak is a Linux application sandboxing and distribution framework. A path traversal vulnerability affects versions of Flatpak prior to 1.12.3 and 1.10.6. flatpak-builder applies `finish-args` last in the build. At this point the build directory will have the full access that is specified in the manifest, so running `flatpak build` against it will gain those permissions. Normally this will not be done, so this is not problem. However, if `--mirror-screenshots-url` is specified, then flatpak-builder will launch `flatpak build --nofilesystem=host appstream-utils mirror-screenshots` after finalization, which can lead to issues even with the `--nofilesystem=host` protection. In normal use, the only issue is that these empty directories can be created wherever the user has write permissions. However, a malicious application could replace the `appstream-util` binary and potentially do something more hostile. This has been resolved in Flatpak 1.12.3 and 1.10.6 by changing the behaviour of `--nofilesystem=home` and `--nofilesystem=host`.

Severity ?

7.7 (High)


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

CWE

CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Assigner

GitHub_M

References

URL

Tags

	https://github.com/flatpak/flatpak/security/advis…
	https://github.com/flatpak/flatpak/commit/445bdde…
	https://github.com/flatpak/flatpak/commit/4d11f77…
	https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
	https://www.debian.org/security/2022/dsa-5049	vendor-advisory
	https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
	https://security.gentoo.org/glsa/202312-12	vendor-advisory

Impacted products

	Vendor	Product	Version
	flatpak	flatpak	Affected: >= 1.11.0, < 1.12.3 Affected: < 1.10.6

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T02:46:39.409Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/flatpak/flatpak/security/advisories/GHSA-8ch7-5j3h-g4fx"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/flatpak/flatpak/commit/445bddeee657fdc8d2a0a1f0de12975400d4fc1a"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/flatpak/flatpak/commit/4d11f77aa7fd3e64cfa80af89d92567ab9e8e6fa"
          },
          {
            "name": "FEDORA-2022-825ca6bf2b",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/APFTBYGJJVJPFVHRXUW5PII5XOAFI4KH/"
          },
          {
            "name": "DSA-5049",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://www.debian.org/security/2022/dsa-5049"
          },
          {
            "name": "FEDORA-2022-7e328bd66c",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IXKBERLJRYV7KXKGXOLI6IOXVBQNN4DP/"
          },
          {
            "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= 1.11.0, \u003c 1.12.3"
            },
            {
              "status": "affected",
              "version": "\u003c 1.10.6"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Flatpak is a Linux application sandboxing and distribution framework. A path traversal vulnerability affects versions of Flatpak prior to 1.12.3 and 1.10.6. flatpak-builder applies `finish-args` last in the build. At this point the build directory will have the full access that is specified in the manifest, so running `flatpak build` against it will gain those permissions. Normally this will not be done, so this is not problem. However, if `--mirror-screenshots-url` is specified, then flatpak-builder will launch `flatpak build --nofilesystem=host appstream-utils mirror-screenshots` after finalization, which can lead to issues even with the `--nofilesystem=host` protection. In normal use, the only issue is that these empty directories can be created wherever the user has write permissions. However, a malicious application could replace the `appstream-util` binary and potentially do something more hostile. This has been resolved in Flatpak 1.12.3 and 1.10.6 by changing the behaviour of `--nofilesystem=home` and `--nofilesystem=host`."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.7,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-22",
              "description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-12-23T10:06:21.099Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "url": "https://github.com/flatpak/flatpak/security/advisories/GHSA-8ch7-5j3h-g4fx"
        },
        {
          "url": "https://github.com/flatpak/flatpak/commit/445bddeee657fdc8d2a0a1f0de12975400d4fc1a"
        },
        {
          "url": "https://github.com/flatpak/flatpak/commit/4d11f77aa7fd3e64cfa80af89d92567ab9e8e6fa"
        },
        {
          "name": "FEDORA-2022-825ca6bf2b",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/APFTBYGJJVJPFVHRXUW5PII5XOAFI4KH/"
        },
        {
          "name": "DSA-5049",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://www.debian.org/security/2022/dsa-5049"
        },
        {
          "name": "FEDORA-2022-7e328bd66c",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IXKBERLJRYV7KXKGXOLI6IOXVBQNN4DP/"
        },
        {
          "name": "GLSA-202312-12",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://security.gentoo.org/glsa/202312-12"
        }
      ],
      "source": {
        "advisory": "GHSA-8ch7-5j3h-g4fx",
        "discovery": "UNKNOWN"
      },
      "title": "flatpak-builder can access files outside the build directory."
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2022-21682",
    "datePublished": "2022-01-13T00:00:00.000Z",
    "dateReserved": "2021-11-16T00:00:00.000Z",
    "dateUpdated": "2024-08-03T02:46:39.409Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.

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