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Fencer Vulns
critical 9.8

CVE-2004-2154 json

CUPS before 1.1.21rc1 treats a Location directive in cupsd.conf as case sensitive, which allows attackers to bypass intended ACLs via a pri…

published 2004-12-31 21 y ago modified 2026-06-16 4 mo ago also EUVD-2004-2146

cvss
9.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
2.1%
EPSS 2.1% chance of exploitation in 30 days, percentile 81%
public exploits
0
none known

Summary

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.

Patch / fix

  • apple cups 1.1.21
  • cups Debian 14, Debian 13, Debian 12 1.1.20final+rc1-1

debian advisories DEBIAN-CVE-2004-2154

  • cups RHEL 3 1:1.1.17-13.3.29
  • cups-libs RHEL 3 1:1.1.17-13.3.29

red hat advisories RHSA-2005:571

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2004-2154 updated

security flaw

  • Red Hat Desktop version 3 cups 1.1.17-13.3.29, cups-libs 1.1.17-13.3.29 Red Hat Enterprise Linux AS version 3 cups 1.1.17-13.3.29, cups-libs 1.1.17-13.3.29 Red Hat Enterprise Linux ES version 3 cups 1.1.17-13.3.29, cups-libs 1.1.17-13.3.29 Red Hat Enterprise Linux WS version 3 cups 1.1.17-13.3.29, cups-libs 1.1.17-13.3.29
    fixed: vendor fix RHSA-2005:571

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
total
Assessed
2 y ago

Exploit prediction

2.07% chance of exploitation in the next 30 days, higher than 81% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products

  • apple cups
  • canonical ubuntu_linux

Classification

Weakness
  • CWE-178 Improper Handling of Case Sensitivity

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.