CVE-2004-2154
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.07%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 2.07% probability · 81th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-178
- Affected
- apple/cups · canonical/ubuntu linux
- Source
- secalert@redhat.com
EPSS 2.1% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://www.cups.org/str.php?L700Broken Link, Patch
- http://www.novell.com/linux/security/advisories/2005_18_sr.htmlBroken Link
- http://www.redhat.com/support/errata/RHSA-2005-571.htmlBroken Link
- http://www.ubuntu.com/usn/usn-185-1Third Party Advisory
- https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=162405Issue Tracking, Vendor Advisory
- https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=163274Issue Tracking
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9940Broken Link
- http://www.cups.org/str.php?L700Broken Link, Patch
- http://www.novell.com/linux/security/advisories/2005_18_sr.htmlBroken Link
- http://www.redhat.com/support/errata/RHSA-2005-571.htmlBroken Link
- http://www.ubuntu.com/usn/usn-185-1Third Party Advisory
- https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=162405Issue Tracking, Vendor Advisory
- https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=163274Issue Tracking
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9940Broken Link
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.