| Name | CVE-2016-3120 |
| Description | The validate_as_request function in kdc_util.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.13.6 and 1.4.x before 1.14.3, when restrict_anonymous_to_tgt is enabled, uses an incorrect client data structure, which allows remote authenticated users to cause a denial of service (NULL pointer dereference and daemon crash) via an S4U2Self request. |
| 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-1265-1 |
| Debian Bugs | 832572 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| krb5 (PTS) | jessie, jessie (lts) | 1.12.1+dfsg-19+deb8u9 | fixed |
| stretch (security) | 1.15-1+deb9u3 | fixed | |
| stretch (lts), stretch | 1.15-1+deb9u6 | fixed | |
| buster, buster (lts) | 1.17-3+deb10u7 | fixed | |
| buster (security) | 1.17-3+deb10u6 | fixed | |
| bullseye (security), bullseye | 1.18.3-6+deb11u5 | fixed | |
| bookworm (security), bookworm | 1.20.1-2+deb12u2 | fixed | |
| sid, trixie | 1.21.3-3 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| krb5 | source | wheezy | 1.10.1+dfsg-5+deb7u9 | DLA-1265-1 | ||
| krb5 | source | jessie | 1.12.1+dfsg-19+deb8u3 | |||
| krb5 | source | (unstable) | 1.14.3+dfsg-1 | 832572 |
https://github.com/krb5/krb5/commit/93b4a6306a0026cf1cc31ac4bd8a49ba5d034ba7
http://krbdev.mit.edu/rt/Ticket/Display.html?id=8458