Your submission was sent successfully! Close

You have successfully unsubscribed! Close

Thank you for signing up for our newsletter!
In these regular emails you will find the latest updates about Ubuntu and upcoming events where you can meet our team.Close

USN-707-1: CUPS vulnerabilities

12 January 2009

CUPS vulnerabilities

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Releases

Packages

Details

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)

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 8.10
Ubuntu 8.04
Ubuntu 7.10
Ubuntu 6.06

In general, a standard system upgrade is sufficient to effect the
necessary changes.