CVE-2022-21682 (GCVE-0-2022-21682)
Vulnerability from cvelistv5
Published
2022-01-13 00:00
Modified
2024-08-03 02:46
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')
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`.
References
security-advisories@github.com https://github.com/flatpak/flatpak/commit/445bddeee657fdc8d2a0a1f0de12975400d4fc1a Patch, Third Party Advisory
security-advisories@github.com https://github.com/flatpak/flatpak/commit/4d11f77aa7fd3e64cfa80af89d92567ab9e8e6fa Patch, Third Party Advisory
security-advisories@github.com https://github.com/flatpak/flatpak/security/advisories/GHSA-8ch7-5j3h-g4fx Patch, Third Party Advisory
security-advisories@github.com https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/APFTBYGJJVJPFVHRXUW5PII5XOAFI4KH/
security-advisories@github.com https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IXKBERLJRYV7KXKGXOLI6IOXVBQNN4DP/
security-advisories@github.com https://security.gentoo.org/glsa/202312-12
security-advisories@github.com https://www.debian.org/security/2022/dsa-5049 Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://github.com/flatpak/flatpak/commit/445bddeee657fdc8d2a0a1f0de12975400d4fc1a Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://github.com/flatpak/flatpak/commit/4d11f77aa7fd3e64cfa80af89d92567ab9e8e6fa Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://github.com/flatpak/flatpak/security/advisories/GHSA-8ch7-5j3h-g4fx Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/APFTBYGJJVJPFVHRXUW5PII5XOAFI4KH/
af854a3a-2127-422b-91ae-364da2661108 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IXKBERLJRYV7KXKGXOLI6IOXVBQNN4DP/
af854a3a-2127-422b-91ae-364da2661108 https://security.gentoo.org/glsa/202312-12
af854a3a-2127-422b-91ae-364da2661108 https://www.debian.org/security/2022/dsa-5049 Third Party Advisory
Impacted products
Vendor Product Version
flatpak flatpak Version: >= 1.11.0, < 1.12.3
Version: < 1.10.6
 Create a notification for this product.
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  }
}


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