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Fencer Vulns
critical 10.0

CVE-2004-0084 in the critical feed json

Buffer overflow in the ReadFontAlias function in XFree86 4.1.0 to 4.3.0, when using the CopyISOLatin1Lowered function, allows local or remo…

published 2004-02-14 22 y ago modified 2026-06-16 4 mo ago also EUVD-2004-0084

cvss
10.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
24.9%
EPSS 24.9% chance of exploitation in 30 days, percentile 97%
public exploits
1
Exploit-DB

Summary

Buffer overflow in the ReadFontAlias function in XFree86 4.1.0 to 4.3.0, when using the CopyISOLatin1Lowered function, allows local or remote authenticated users to execute arbitrary code via a malformed entry in the font alias (font.alias) file, a different vulnerability than CVE-2004-0083 and CVE-2004-0106.

Patch / fix

  • XFree86 RHEL 3 4.3.0-55.EL
  • XFree86-twm RHEL 3 4.3.0-55.EL
  • XFree86-xdm RHEL 3 4.3.0-55.EL
  • XFree86-xfs RHEL 3 4.3.0-55.EL
  • XFree86-libs RHEL 3 4.3.0-55.EL
  • XFree86-Xvfb RHEL 3 4.3.0-55.EL
  • XFree86-tools RHEL 3 4.3.0-55.EL
  • XFree86-xauth RHEL 3 4.3.0-55.EL

red hat advisories RHSA-2004:061

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-2004-0084 updated

security flaw

  • Red Hat Desktop version 3 XFree86 4.3.0-55.EL, XFree86-twm 4.3.0-55.EL, XFree86-xdm 4.3.0-55.EL, XFree86-xfs 4.3.0-55.EL, XFree86-libs 4.3.0-55.EL, XFree86-Xvfb 4.3.0-55.EL, +21 more Red Hat Enterprise Linux AS version 3 XFree86 4.3.0-55.EL, XFree86-twm 4.3.0-55.EL, XFree86-xdm 4.3.0-55.EL, XFree86-xfs 4.3.0-55.EL, XFree86-libs 4.3.0-55.EL, XFree86-Xvfb 4.3.0-55.EL, +21 more
    fixed: vendor fix RHSA-2004:061
  • Red Hat Enterprise Linux ES version 2.1
    fixed: vendor fix RHSA-2004:060
  • Red Hat Enterprise Linux ES version 3 XFree86 4.3.0-55.EL, XFree86-twm 4.3.0-55.EL, XFree86-xdm 4.3.0-55.EL, XFree86-xfs 4.3.0-55.EL, XFree86-libs 4.3.0-55.EL, XFree86-Xvfb 4.3.0-55.EL, +21 more
    fixed: vendor fix RHSA-2004:061
  • Red Hat Enterprise Linux WS version 2.1
    fixed: vendor fix RHSA-2004:060
  • Red Hat Enterprise Linux WS version 3 XFree86 4.3.0-55.EL, XFree86-twm 4.3.0-55.EL, XFree86-xdm 4.3.0-55.EL, XFree86-xfs 4.3.0-55.EL, XFree86-libs 4.3.0-55.EL, XFree86-Xvfb 4.3.0-55.EL, +21 more
    fixed: vendor fix RHSA-2004:061
  • Red Hat Linux 9
    fixed: vendor fix RHSA-2004:059
  • Red Hat Linux Advanced Workstation 2.1
    fixed: vendor fix RHSA-2004:060

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

Timeline

  1. First public exploit (EDB-23690)
  2. Published

Exploit prediction

24.86% chance of exploitation in the next 30 days, higher than 97% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-23690 XFree86 4.x - CopyISOLatin1Lowered Font_Name Buffer Overflow dos, 2004-02-12
  • securityfocus.com http://www.securityfocus.com/bid/9652 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 10.0 AV:N/AC:L/Au:N/C:C/I:C/A:C

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.