| Name | CVE-2021-44758 |
| Description | Heimdal before 7.7.1 allows attackers to cause a NULL pointer dereference in a SPNEGO acceptor via a preferred_mech_type of GSS_C_NO_OID and a nonzero initial_response value to send_accept. |
| 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, DSA-5287-1, ELA-795-1, ELA-797-1 |
| Debian Bugs | 1024187 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| heimdal (PTS) | jessie, jessie (lts) | 1.6~rc2+dfsg-9+deb8u3 | fixed |
| stretch (security) | 7.1.0+dfsg-13+deb9u3 | vulnerable | |
| stretch (lts), stretch | 7.1.0+dfsg-13+deb9u4 | fixed | |
| buster (security), buster, buster (lts) | 7.5.0+dfsg-3+deb10u2 | fixed | |
| 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 |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| heimdal | source | jessie | 1.6~rc2+dfsg-9+deb8u3 | ELA-797-1 | ||
| heimdal | source | stretch | 7.1.0+dfsg-13+deb9u4 | ELA-795-1 | ||
| 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 |
https://github.com/heimdal/heimdal/security/advisories/GHSA-69h9-669w-88xv
https://github.com/heimdal/heimdal/commit/f9ec7002cdd526ae84fbacbf153162e118f22580 (heimdal-7.7.1)