What’s Vulnerable › Vulnerabilities

CVE-2004-2154

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2004-12-31 · updated 2026-06-16
• Weakness: CWE-178

Description

CUPS before 1.1.21rc1 treats a Location directive in cupsd.conf as case sensitive, which allows attackers to bypass intended ACLs via a printer name containing uppercase or lowercase letters that are different from what is specified in the directive.

Affected products

• cups: before 1.1.21; 1.1.21 — fixed in 1.1.21
• Canonical Ubuntu Linux: 4.10

How to fix

Upgrade to a fixed version: cups 1.1.21. Check the vendor advisory for mitigations.

References

• http://www.cups.org/str.php?L700
• http://www.novell.com/linux/security/advisories/2005_18_sr.html
• http://www.redhat.com/support/errata/RHSA-2005-571.html
• http://www.ubuntu.com/usn/usn-185-1
• https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=162405
• https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=163274
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9940
• http://www.cups.org/str.php?L700
• http://www.novell.com/linux/security/advisories/2005_18_sr.html
• http://www.redhat.com/support/errata/RHSA-2005-571.html
• http://www.ubuntu.com/usn/usn-185-1
• https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=162405

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