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Mageia 8: 2021-0486 Critical: Flatpak Socket Access Security Advisory

mageia
Calendar Grey October 23, 2021
Dist Mageia Esm H88
New Flatpak releases address significant vulnerability related to socket permissions in Mageia 8 applications. Key details included.
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 ...

Summary

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, 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.

References

- https://bugs.mageia.org/show_bug.cgi?id=29543

- https://github.com/flatpak/flatpak/security/advisories/GHSA-67h7-w3jq-vh4q

- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/thread/R5656ONDP2MGKIJMKEC7N2NXCV27WGTC/

- https://www.cve.org/CVERecord?id=CVE-2021-41133

Topics%20covered

Topics Covered

security advisory security update security issues socket access Mageia flatpak AF_UNIX

Resolution

SRPMS

- 8/core/flatpak-1.10.5-1.mga8

Severity
critical
Lowest
Low
Medium
High
Critical

Publication date: 23 Oct 2021
URL: https://advisories.mageia.org/MGASA-2021-0486.html
Type: security
CVE: CVE-2021-41133

Topics%20covered

Topics Covered

security advisory security update security issues socket access Mageia flatpak AF_UNIX

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