CVE-2022-0358

NameCVE-2022-0358
DescriptionA flaw was found in the QEMU virtio-fs shared file system daemon (virtiofsd) implementation. This flaw is strictly related to CVE-2018-13405. A local guest user can create files in the directories shared by virtio-fs with unintended group ownership in a scenario where a directory is SGID to a certain group and is writable by a user who is not a member of the group. This could allow a malicious unprivileged user inside the guest to gain access to resources accessible to the root group, potentially escalating their privileges within the guest. A malicious local user in the host might also leverage this unexpected executable file created by the guest to escalate their privileges on the host system.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDSA-5133-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
qemu (PTS)jessie, jessie (lts)1:2.1+dfsg-12+deb8u23fixed
stretch (security)1:2.8+dfsg-6+deb9u17fixed
stretch (lts), stretch1:2.8+dfsg-6+deb9u19fixed
buster1:3.1+dfsg-8+deb10u8fixed
buster (security)1:3.1+dfsg-8+deb10u12fixed
bullseye1:5.2+dfsg-11+deb11u3fixed
bullseye (security)1:5.2+dfsg-11+deb11u2fixed
bookworm1:7.2+dfsg-7+deb12u6fixed
trixie1:8.2.4+ds-1fixed
sid1:9.0.2+ds-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
qemusourcejessie(not affected)
qemusourcestretch(not affected)
qemusourcebuster(not affected)
qemusourcebullseye1:5.2+dfsg-11+deb11u2DSA-5133-1
qemusource(unstable)1:7.0+dfsg-1

Notes

[buster] - qemu <not-affected> (Vulnerable code not present)
[stretch] - qemu <not-affected> (virtiofsd added in 5.0)
https://bugzilla.redhat.com/show_bug.cgi?id=2044863
https://gitlab.com/qemu-project/qemu/-/commit/449e8171f96a6a944d1f3b7d3627ae059eae21ca
[jessie] - qemu <not-affected> (virtiofsd added in 5.0)

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