Ubuntu 6.06 LTS / 7.10 / 8.04 LTS / 8.10 : cups, cupsys vulnerabilities (USN-707-1)

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 CUPS didn't properly handle adding a large
number of RSS subscriptions. A local user could exploit this and cause
CUPS to crash, leading to a denial of service. This issue only applied
to Ubuntu 7.10, 8.04 LTS and 8.10. (CVE-2008-5183)

It was discovered that CUPS did not authenticate users when adding and
cancelling RSS subscriptions. An unprivileged local user could bypass
intended restrictions and add a large number of RSS subscriptions.
This issue only applied to Ubuntu 7.10 and 8.04 LTS. (CVE-2008-5184)

It was discovered that the PNG filter in CUPS did not properly handle
certain malformed images. If a user or automated system were tricked
into opening a crafted PNG image file, a remote attacker could cause a
denial of service or execute arbitrary code with user privileges. In
Ubuntu 7.10, 8.04 LTS, and 8.10, attackers would be isolated by the
AppArmor CUPS profile. (CVE-2008-5286)

It was discovered that the example pstopdf CUPS filter created log
files in an insecure way. Local users could exploit a race condition
to create or overwrite files with the privileges of the user invoking
the program. This issue only applied to Ubuntu 6.06 LTS, 7.10, and
8.04 LTS. (CVE-2008-5377).

Solution :

Update the affected packages.

Risk factor :

Critical / CVSS Base Score : 10.0
(CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C)
CVSS Temporal Score : 8.3
(CVSS2#E:F/RL:OF/RC:C)
Public Exploit Available : true

Family: Ubuntu Local Security Checks

Nessus Plugin ID: 38132 ()

Bugtraq ID: 32419

CVE ID: CVE-2008-5183
CVE-2008-5184
CVE-2008-5286
CVE-2008-5377