Ubuntu 8.04 LTS / 8.10 / 9.04 : dovecot vulnerabilities (USN-838-1)

Ubuntu Security Notice (C) 2009-2013 Canonical, Inc. / NASL script (C) 2009-2013 Tenable Network Security, Inc.


Synopsis :

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

Description :

It was discovered that the ACL plugin in Dovecot would incorrectly
handle negative access rights. An attacker could exploit this flaw to
access the Dovecot server, bypassing the intended access restrictions.
This only affected Ubuntu 8.04 LTS. (CVE-2008-4577)

It was discovered that the ManageSieve service in Dovecot incorrectly
handled '..' in script names. A remote attacker could exploit this to
read and modify arbitrary sieve files on the server. This only
affected Ubuntu 8.10. (CVE-2008-5301)

It was discovered that the Sieve plugin in Dovecot incorrectly handled
certain sieve scripts. An authenticated user could exploit this with a
crafted sieve script to cause a denial of service or possibly execute
arbitrary code. (CVE-2009-2632, CVE-2009-3235).

Solution :

Update the affected packages.

Risk factor :

High / CVSS Base Score : 7.5
(CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P)
CVSS Temporal Score : 5.5
(CVSS2#E:U/RL:OF/RC:C)
Public Exploit Available : false

Family: Ubuntu Local Security Checks

Nessus Plugin ID: 41940 ()

Bugtraq ID: 36377

CVE ID: CVE-2008-4577
CVE-2008-5301
CVE-2009-2632
CVE-2009-3235