| Name | CVE-2022-3437 |
| Description | A heap-based buffer overflow vulnerability was found in Samba within the GSSAPI unwrap_des() and unwrap_des3() routines of Heimdal. The DES and Triple-DES decryption routines in the Heimdal GSSAPI library allow a length-limited write buffer overflow on malloc() allocated memory when presented with a maliciously small packet. This flaw allows a remote user to send specially crafted malicious data to the application, possibly resulting in a denial of service (DoS) attack. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-3206-1, DLA-3792-1, DSA-5287-1, DSA-5647-1 |
| Debian Bugs | 1024187 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| heimdal (PTS) | bullseye (security), bullseye | 7.7.0+dfsg-2+deb11u3 | fixed |
| bookworm | 7.8.git20221117.28daf24+dfsg-2 | fixed | |
| sid, trixie | 7.8.git20221117.28daf24+dfsg-8 | fixed | |
| samba (PTS) | bullseye (security), bullseye | 2:4.13.13+dfsg-1~deb11u6 | fixed |
| bookworm, bookworm (security) | 2:4.17.12+dfsg-0+deb12u1 | fixed | |
| sid, trixie | 2:4.21.1+dfsg-2 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| heimdal | source | buster | 7.5.0+dfsg-3+deb10u1 | DLA-3206-1 | ||
| heimdal | source | bullseye | 7.7.0+dfsg-2+deb11u2 | DSA-5287-1 | ||
| heimdal | source | (unstable) | 7.8.git20221115.a6cf945+dfsg-1 | 1024187 | ||
| samba | source | buster | 2:4.9.5+dfsg-5+deb10u5 | DLA-3792-1 | ||
| samba | source | bullseye | 2:4.13.13+dfsg-1~deb11u6 | DSA-5647-1 | ||
| samba | source | (unstable) | 2:4.16.6+dfsg-1 |
https://www.samba.org/samba/security/CVE-2022-3437.html
https://bugzilla.samba.org/show_bug.cgi?id=15134
https://github.com/heimdal/heimdal/security/advisories/GHSA-45j3-5v39-rf9j
https://github.com/heimdal/heimdal/commit/f6edaafcfefd843ca1b1a041f942a853d85ee7c3 (heimdal-7.7.1)
https://github.com/heimdal/heimdal/commit/c9cc34334bd64b08fe91a2f720262462e9f6bb49 (heimdal-7.7.1)
https://github.com/heimdal/heimdal/commit/a587a4bcb28d5b9047f332573b1e7c8f89ca3edd (heimdal-7.7.1)
https://github.com/heimdal/heimdal/commit/c758910eaad3c0de2cfb68830a661c4739675a7d (heimdal-7.7.1)
https://github.com/heimdal/heimdal/commit/414b2a77fd61c26d64562e3800dc5578d9d0f15d (heimdal-7.7.1)
https://github.com/heimdal/heimdal/commit/be9bbd93ed8f204b4bc1b92d1bc3c16aac194696 (heimdal-7.7.1)
https://github.com/heimdal/heimdal/commit/c8407ca079294d76a5ed140ba5b546f870d23ed2 (heimdal-7.7.1)
https://github.com/heimdal/heimdal/commit/8fb508a25a6a47289c73e3f4339352a73a396eef (heimdal-7.7.1)
In scope for continued Samba support
possible samba 4.13,4.15 regression: https://bugzilla.samba.org/show_bug.cgi?id=15243
and https://bugs.launchpad.net/ubuntu/+source/samba/+bug/2003867