CVE-2024-32462

NameCVE-2024-32462
DescriptionFlatpak is a system for building, distributing, and running sandboxed desktop applications on Linux. in versions before 1.10.9, 1.12.9, 1.14.6, and 1.15.8, a malicious or compromised Flatpak app could execute arbitrary code outside its sandbox. Normally, the `--command` argument of `flatpak run` expects to be given a command to run in the specified Flatpak app, optionally along with some arguments. However it is possible to instead pass `bwrap` arguments to `--command=`, such as `--bind`. It's possible to pass an arbitrary `commandline` to the portal interface `org.freedesktop.portal.Background.RequestBackground` from within a Flatpak app. When this is converted into a `--command` and arguments, it achieves the same effect of passing arguments directly to `bwrap`, and thus can be used for a sandbox escape. The solution is to pass the `--` argument to `bwrap`, which makes it stop processing options. This has been supported since bubblewrap 0.3.0. All supported versions of Flatpak require at least that version of bubblewrap. xdg-desktop-portal version 1.18.4 will mitigate this vulnerability by only allowing Flatpak apps to create .desktop files for commands that do not start with --. The vulnerability is patched in 1.15.8, 1.10.9, 1.12.9, and 1.14.6.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDSA-5666-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
flatpak (PTS)stretch0.8.9-0+deb9u3vulnerable
stretch (security), stretch (lts)0.8.9-0+deb9u2vulnerable
buster (security), buster, buster (lts)1.2.5-0+deb10u4vulnerable
bullseye (security), bullseye1.10.8-0+deb11u2fixed
bookworm (security), bookworm1.14.10-1~deb12u1fixed
sid, trixie1.14.10-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
flatpaksourcestretch(unfixed)end-of-life
flatpaksourcebullseye1.10.8-0+deb11u2DSA-5666-1
flatpaksourcebookworm1.14.4-1+deb12u1DSA-5666-1
flatpaksource(unstable)1.14.6-1

Notes

[buster] - flatpak <ignored> (Minor issue)
https://www.openwall.com/lists/oss-security/2024/04/18/5
https://github.com/flatpak/flatpak/security/advisories/GHSA-phv6-cpc2-2fgj
Fixed by: https://github.com/flatpak/flatpak/commit/bbab7ed1e672356d1a78b422462b210e8e875931 (1.15.8)
Fixed by: https://github.com/flatpak/flatpak/commit/b7c1a558e58aaeb1d007d29529bbb270dc4ff11e (1.14.6)
Fixed by: https://github.com/flatpak/flatpak/commit/81abe2a37d363f5099c3d0bdcd0caad6efc5bf97 (1.12.9)
Fixed by: https://github.com/flatpak/flatpak/commit/72016e3fce8fcbeab707daf4f1a02b931fcc004d (1.10.9)

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