CVE-2020-1983

NameCVE-2020-1983
DescriptionA use after free vulnerability in ip_reass() in ip_input.c of libslirp 4.2.0 and prior releases allows crafted packets to cause a denial of service.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
ReferencesDLA-2262-1, DLA-2288-1, DSA-4665-1
NVD severitylow

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
libslirp (PTS)bullseye4.4.0-1+deb11u2fixed
bookworm, sid4.6.1-1fixed
qemu (PTS)stretch1:2.8+dfsg-6+deb9u9vulnerable
stretch (security)1:2.8+dfsg-6+deb9u16fixed
buster, buster (security)1:3.1+dfsg-8+deb10u8fixed
bullseye1:5.2+dfsg-11fixed
bullseye (security)1:5.2+dfsg-11+deb11u1fixed
bookworm1:6.1+dfsg-6fixed
sid1:6.1+dfsg-7fixed
slirp4netns (PTS)buster0.2.3-1vulnerable
bookworm, bullseye, sid1.0.1-2fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
libslirpsource(unstable)4.2.0-2
qemusourcejessie1:2.1+dfsg-12+deb8u15DLA-2262-1
qemusourcestretch1:2.8+dfsg-6+deb9u10DLA-2288-1
qemusourcebuster1:3.1+dfsg-8+deb10u5DSA-4665-1
qemusource(unstable)1:4.1-2
qemu-kvmsource(unstable)(unfixed)
slirp4netnssource(unstable)1.0.1-1

Notes

[buster] - slirp4netns <no-dsa> (Minor issue)
https://gitlab.freedesktop.org/slirp/libslirp/-/commit/9bd6c5913271eabcb7768a58197ed3301fe19f2d
qemu 1:4.1-2 switched to system libslirp, marking that version as fixed
slirp4netns 1.0.1-1 switched to system libslirp, marking that version as fixed.
https://github.com/rootless-containers/slirp4netns/security/advisories/GHSA-p3hx-89v2-4r99

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