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CVE-2021-3671

Published: 12 October 2021

A null pointer de-reference was found in the way samba kerberos server handled missing sname in TGS-REQ (Ticket Granting Server - Request). An authenticated user could use this flaw to crash the samba server.

Notes

AuthorNote
mdeslaur
same as CVE-2021-37750 for MIT krb5
Priority

Low

CVSS 3 base score: 6.5

Status

Package Release Status
heimdal
Launchpad, Ubuntu, Debian
bionic Needed

focal Needed

hirsute Ignored
(reached end-of-life)
impish Ignored
(reached end-of-life)
jammy Needs triage

trusty Needed

upstream Needs triage

xenial Needed

Patches:
upstream: https://github.com/heimdal/heimdal/commit/04171147948d0a3636bc6374181926f0fb2ec83a
upstream: https://github.com/heimdal/heimdal/commit/773802aecfb4b6a73817fa522faeb55b2a7cdb2a

samba
Launchpad, Ubuntu, Debian
bionic
Released (2:4.7.6+dfsg~ubuntu-0ubuntu2.26)
focal
Released (2:4.13.14+dfsg-0ubuntu0.20.04.1)
hirsute
Released (2:4.13.14+dfsg-0ubuntu0.21.04.1)
impish
Released (2:4.13.14+dfsg-0ubuntu0.21.10.1)
jammy
Released (2:4.13.14+dfsg-0ubuntu1)
trusty Needed

upstream
Released (4.13.13)
xenial Needed

Patches:


upstream: https://gitlab.com/samba-team/samba/-/commit/0cb4b939f192376bf5e33637863a91a20f74c5a5