CVE-2009-0949: Apple Cups

High severity, CVSS 7.5. EPSS: 19.6% chance of exploitation in the next 30 days.

The ippReadIO function in cups/ipp.c in cupsd in CUPS before 1.3.10 does not properly initialize memory for IPP request packets, which allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a scheduler request with two consecutive IPP_TAG_UNSUPPORTED tags.

Affected products

• Apple Cups: before 1.3.10 (fixed in 1.3.10)
• Apple Mac OS X: from 10.0.0, before 10.4.11 (fixed in 10.4.11); from 10.5.0, before 10.5.8 (fixed in 10.5.8)
• Apple Mac OS X Server: from 10.0.0, before 10.4.11 (fixed in 10.4.11); from 10.5.0, before 10.5.8 (fixed in 10.5.8)
• Canonical Ubuntu Linux: version 6.06 only; version 8.04 only; version 8.10 only; version 9.04 only
• Debian Debian Linux: version 4.0 only; version 5.0 only; version 6.0 only
• Opensuse Opensuse: version 10.3 only
• Suse Linux Enterprise: version 9.0 only; version 10.0 only

Published 2009-06-09. Last modified 2026-06-16.