What’s Vulnerable › Vulnerabilities

CVE-2009-0949

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 19.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2009-06-09 · updated 2026-06-16
• Weakness: CWE-908

Description

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

• cups: before 1.3.10 — fixed in 1.3.10
• macOS: from 10.0.0 before 10.4.11; from 10.5.0 before 10.5.8 — fixed in 10.4.11, 10.5.8
• Apple Mac Os X Server: from 10.0.0 before 10.4.11; from 10.5.0 before 10.5.8 — fixed in 10.4.11, 10.5.8
• Canonical Ubuntu Linux: 6.06, 8.04, 8.10, 9.04
• Debian Linux: 4.0, 5.0, 6.0
• Opensuse: 10.3
• SUSE Linux Enterprise: 9.0, 10.0

How to fix

Upgrade to a fixed version: cups 1.3.10; macOS 10.4.11, 10.5.8; Apple Mac Os X Server 10.4.11, 10.5.8. Check the vendor advisory for mitigations.

References

• http://lists.apple.com/archives/security-announce/2009/Sep/msg00004.html
• http://lists.opensuse.org/opensuse-security-announce/2009-07/msg00002.html
• http://secunia.com/advisories/35322
• http://secunia.com/advisories/35328
• http://secunia.com/advisories/35340
• http://secunia.com/advisories/35342
• http://secunia.com/advisories/35685
• http://secunia.com/advisories/36701
• http://securitytracker.com/id?1022321
• http://support.apple.com/kb/HT3865
• http://www.coresecurity.com/content/AppleCUPS-null-pointer-vulnerability
• http://www.debian.org/security/2009/dsa-1811

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