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CVE-2022-32746

Published: 27 July 2022

A flaw was found in the Samba AD LDAP server. The AD DC database audit logging module can access LDAP message values freed by a preceding database module, resulting in a use-after-free issue. This issue is only possible when modifying certain privileged attributes, such as userAccountControl.

Notes

AuthorNote
mdeslaur
combined patches are in bug 15096
Fixing this in Ubuntu 18.04 LTS would require substantial
code backports. We will not be fixing this issue in Ubuntu 18.04
LTS. In environments where this is of concern, we recommend
updating to a more recent Ubuntu version, or disabling AD DC
database audit logging if this is not passible.

Mitigation

Disabling AD DC database audit logging prevents the use-after-free from
occurring, as that is the only component that will access the original
message.
Priority

Medium

CVSS 3 base score: 5.4

Status

Package Release Status
ldb
Launchpad, Ubuntu, Debian
bionic Deferred

focal
Released (2:2.2.3-0ubuntu0.20.04.3)
impish Ignored
(reached end-of-life)
jammy
Released (2:2.4.4-0ubuntu0.1)
kinetic Does not exist

trusty Needs triage

upstream Needs triage

xenial Needs triage

samba
Launchpad, Ubuntu, Debian
bionic Ignored

focal
Released (2:4.13.17~dfsg-0ubuntu1.20.04.1)
impish Ignored
(reached end-of-life)
jammy
Released (2:4.15.9+dfsg-0ubuntu0.2)
kinetic
Released (2:4.16.4+dfsg-2ubuntu1)
trusty Needs triage

upstream Needs triage

xenial Needs triage