Ubuntu 6.06 LTS / 7.04 / 7.10 / 8.04 LTS : postfix vulnerability (USN-636-1)

Ubuntu Security Notice (C) 2008-2016 Canonical, Inc. / NASL script (C) 2008-2016 Tenable Network Security, Inc.


Synopsis :

The remote Ubuntu host is missing one or more security-related
patches.

Description :

Sebastian Krahmer discovered that Postfix was not correctly handling
mailbox ownership when dealing with Linux's implementation of
hardlinking to symlinks. In certain mail spool configurations, a local
attacker could exploit this to append data to arbitrary files as the
root user. The default Ubuntu configuration was not vulnerable.

Note that Tenable Network Security has extracted the preceding
description block directly from the Ubuntu security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues.

Solution :

Update the affected packages.

Risk factor :

Medium / CVSS Base Score : 6.2
(CVSS2#AV:L/AC:H/Au:N/C:C/I:C/A:C)
CVSS Temporal Score : 5.4
(CVSS2#E:ND/RL:OF/RC:C)
Public Exploit Available : true

Family: Ubuntu Local Security Checks

Nessus Plugin ID: 33941 ()

Bugtraq ID: 30691

CVE ID: CVE-2008-2936

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