| Name | CVE-2023-39975 |
| Description | kdc/do_tgs_req.c in MIT Kerberos 5 (aka krb5) 1.21 before 1.21.2 has a double free that is reachable if an authenticated user can trigger an authorization-data handling failure. Incorrect data is copied from one ticket to another. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| krb5 (PTS) | buster | 1.17-3+deb10u4 | fixed |
| buster (security) | 1.17-3+deb10u6 | fixed |
| bullseye | 1.18.3-6+deb11u4 | fixed |
| bullseye (security) | 1.18.3-6+deb11u3 | fixed |
| bookworm | 1.20.1-2+deb12u1 | fixed |
| trixie | 1.20.1-5 | fixed |
| sid | 1.20.1-6 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| krb5 | source | (unstable) | (not affected) | | | |
Notes
- krb5 <not-affected> (Vulnerable code not present)
https://github.com/krb5/krb5/pull/1312
Introduced by: https://github.com/krb5/krb5/commit/a9705a1e0b2cf0cde3e6f8dee14c25ffc074c00a (krb5-1.21-beta1)
Fixed by: https://github.com/krb5/krb5/commit/88a1701b423c13991a8064feeb26952d3641d840