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LIN5-20516 : Security Advisory - cups - CVE-2015-1158

Created: Jun 14, 2015    Updated: Dec 19, 2017
Resolved Date: Jun 18, 2015
Previous ID: LIN4-32736
Found In Version: 5.0.1.26
Fix Version: 5.0.1.28
Severity: Standard
Applicable for: Wind River Linux 5
Component/s: Userspace

Description

The following flaw was found in CUPS:

Cupsd uses reference-counted strings with global scope. When parsing a print job request, cupsd over-decrements the reference count for a string from the request. As a result, an attacker can prematurely free an arbitrary string of global scope. They can use this to dismantle ACLs protecting privileged operations, and upload a replacement configuration file, and subsequently run arbitrary code on a target machine.

This bug is exploitable in default configurations, and does not require any special permissions other than the basic ability to print.

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-1158

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