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CVE-2018-16851

Published: 27 November 2018

Samba from version 4.0.0 and before versions 4.7.12, 4.8.7, 4.9.3 is vulnerable to a denial of service. During the processing of an LDAP search before Samba's AD DC returns the LDAP entries to the client, the entries are cached in a single memory object with a maximum size of 256MB. When this size is reached, the Samba process providing the LDAP service will follow the NULL pointer, terminating the process. There is no further vulnerability associated with this issue, merely a denial of service.

Priority

Medium

CVSS 3 base score: 6.5

Status

Package Release Status
samba
Launchpad, Ubuntu, Debian
Upstream
Released (4.7.12,4.8.7,4.9.3)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (2:4.7.6+dfsg~ubuntu-0ubuntu2.5)
Ubuntu 16.04 ESM (Xenial Xerus)
Released (2:4.3.11+dfsg-0ubuntu0.16.04.18)
Ubuntu 14.04 ESM (Trusty Tahr)
Released (2:4.3.11+dfsg-0ubuntu0.14.04.19)