| 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 |
| Debian Bugs | 1024187 |
Vulnerable and fixed packages
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 |
The information below is based on the following data on fixed versions.
Notes
https://github.com/heimdal/heimdal/security/advisories/GHSA-69h9-669w-88xv
https://github.com/heimdal/heimdal/commit/f9ec7002cdd526ae84fbacbf153162e118f22580 (heimdal-7.7.1)