CVE-2020-27840

Published: 24 March 2021

A flaw was found in samba. Spaces used in a string around a domain name (DN), while supposed to be ignored, can cause invalid DN strings with spaces to instead write a zero-byte into out-of-bounds memory, resulting in a crash. The highest threat from this vulnerability is to system availability.

Priority

High

CVSS 3 base score: 7.5

Status

Package Release Status
ldb
Launchpad, Ubuntu, Debian
Upstream Needs triage

Ubuntu 20.04 LTS (Focal Fossa)
Released (2:2.0.10-0ubuntu0.20.04.3)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (2:1.2.3-1ubuntu0.2)
Ubuntu 16.04 ESM (Xenial Xerus)
Released (2:1.1.24-1ubuntu3.2)
Ubuntu 14.04 ESM (Trusty Tahr)
Released (1:1.1.24-0ubuntu0.14.04.2+esm1)
Patches:
Upstream: https://bugzilla.samba.org/attachment.cgi?id=16460 (master)
Upstream: https://bugzilla.samba.org/attachment.cgi?id=16462 (4.13)
Upstream: https://bugzilla.samba.org/attachment.cgi?id=16463 (4.12)
Upstream: https://bugzilla.samba.org/attachment.cgi?id=16464 (4.11)
samba
Launchpad, Ubuntu, Debian
Upstream Needs triage

Ubuntu 20.04 LTS (Focal Fossa) Not vulnerable
(code not compiled)
Ubuntu 18.04 LTS (Bionic Beaver) Not vulnerable
(code not compiled)
Ubuntu 16.04 ESM (Xenial Xerus) Not vulnerable
(code not compiled)
Ubuntu 14.04 ESM (Trusty Tahr) Not vulnerable
(code not compiled)
Patches:
Upstream: https://bugzilla.samba.org/attachment.cgi?id=16460 (master)
Upstream: https://bugzilla.samba.org/attachment.cgi?id=16462 (4.13)
Upstream: https://bugzilla.samba.org/attachment.cgi?id=16463 (4.12)
Upstream: https://bugzilla.samba.org/attachment.cgi?id=16464 (4.11)