CVE-2022-21682
published 2022-01-13CVE-2022-21682: 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…
medium6.5CVSS 3.1
AVNACLPRLUINSUCNIHAN
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`.
Affected
15 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | debian_linux | — | — |
| debian | debian_linux | — | — |
| debian | debian_linux | — | — |
| debian | flatpak | < flatpak 1.12.3-1 (bookworm) | flatpak 1.12.3-1 (bookworm) |
| fedoraproject | fedora | — | — |
| flatpak | flatpak | < 1.10.6 | 1.10.6 |
| flatpak | flatpak | < 1.10.7 | 1.10.7 |
| flatpak | flatpak | — | — |
| flatpak | flatpak | >= 0 < 1.10.7-0+deb11u1 | 1.10.7-0+deb11u1 |
| flatpak | flatpak | >= 0 < 1.12.3-1 | 1.12.3-1 |
| flatpak | flatpak | >= 0 < 1.12.3-1 | 1.12.3-1 |
| flatpak | flatpak | >= 0 < 1.12.3-1 | 1.12.3-1 |
| flatpak | flatpak | >= 1.11.1 < 1.12.4 | 1.12.4 |
| flatpak | flatpak-builder | < 1.2.2 | 1.2.2 |
| redhat | enterprise_linux | — | — |
CVSS provenance
nvdv3.16.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
osv6.5MEDIUM
OSV
CVE-2022-21682: Flatpak is a Linux application sandboxing and distribution framework
osv·2022-01-13·CVSS 6.5
CVE-2022-21682 [MEDIUM] CVE-2022-21682: Flatpak is a Linux application sandboxing and distribution framework
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.
Red Hat
flatpak: flatpak-builder --mirror-screenshots-url can access files outside the build directory
vendor_redhat·2022-01-12·CVSS 7.7
CVE-2022-21682 [HIGH] CWE-22 flatpak: flatpak-builder --mirror-screenshots-url can access files outside the build directory
flatpak: flatpak-builder --mirror-screenshots-url can access files outside the build directory
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 onl
Debian
CVE-2022-21682: flatpak - Flatpak is a Linux application sandboxing and distribution framework. A path tra...
vendor_debian·2022·CVSS 7.7
CVE-2022-21682 [HIGH] CVE-2022-21682: flatpak - Flatpak is a Linux application sandboxing and distribution framework. A path tra...
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.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://github.com/flatpak/flatpak/commit/445bddeee657fdc8d2a0a1f0de12975400d4fc1ahttps://github.com/flatpak/flatpak/commit/4d11f77aa7fd3e64cfa80af89d92567ab9e8e6fahttps://github.com/flatpak/flatpak/security/advisories/GHSA-8ch7-5j3h-g4fxhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/APFTBYGJJVJPFVHRXUW5PII5XOAFI4KH/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IXKBERLJRYV7KXKGXOLI6IOXVBQNN4DP/https://security.gentoo.org/glsa/202312-12https://www.debian.org/security/2022/dsa-5049https://github.com/flatpak/flatpak/commit/445bddeee657fdc8d2a0a1f0de12975400d4fc1ahttps://github.com/flatpak/flatpak/commit/4d11f77aa7fd3e64cfa80af89d92567ab9e8e6fahttps://github.com/flatpak/flatpak/security/advisories/GHSA-8ch7-5j3h-g4fxhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/APFTBYGJJVJPFVHRXUW5PII5XOAFI4KH/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IXKBERLJRYV7KXKGXOLI6IOXVBQNN4DP/https://security.gentoo.org/glsa/202312-12https://www.debian.org/security/2022/dsa-5049
2022-01-13
Published