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Fencer Intel
critical 9.3

CVE-2013-6462 in the critical feed json

Stack-based buffer overflow in the bdfReadCharacters function in bitmap/bdfread.c in X.Org libXfont 1.1 through 1.4.6 allows remote attacke…

published 12y ago modified 4mo ago also EUVD-2013-6266

cvss
9.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
10.3%
EPSS 10.3% chance of exploitation in 30 days, percentile 95%
public exploits
0
none known

Summary

Stack-based buffer overflow in the bdfReadCharacters function in bitmap/bdfread.c in X.Org libXfont 1.1 through 1.4.6 allows remote attackers to cause a denial of service (crash) or possibly execute arbitrary code via a long string in a character name in a BDF font file.

Patch / fix

  • libxfont Debian 14, Debian 13, Debian 12 1:1.4.7-1

debian advisories DEBIAN-CVE-2013-6462

  • libXfont RHEL 5 1.2.2-1.0.5.el5_10
  • libXfont RHEL 6 1.4.5-3.el6_5

red hat advisories RHSA-2014:0018

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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-2013-6462 updated cvss 6.9

libXfont: stack-based buffer overflow flaw when parsing Glyph Bitmap Distribution Format (BDF) fonts

  • Red Hat Enterprise Linux (v. 5 server) libXfont 1.2.2-1.0.5.el5_10 Red Hat Enterprise Linux Desktop (v. 5 client) libXfont 1.2.2-1.0.5.el5_10 Red Hat Enterprise Linux Desktop (v. 6) libXfont 1.4.5-3.el6_5 Red Hat Enterprise Linux Desktop Optional (v. 6) libXfont 1.4.5-3.el6_5 Red Hat Enterprise Linux Desktop Workstation (v. 5 client) libXfont 1.2.2-1.0.5.el5_10 Red Hat Enterprise Linux HPC Node (v. 6) libXfont 1.4.5-3.el6_5
    +5 more products
    Red Hat Enterprise Linux HPC Node Optional (v. 6) libXfont 1.4.5-3.el6_5 Red Hat Enterprise Linux Server (v. 6) libXfont 1.4.5-3.el6_5 Red Hat Enterprise Linux Server Optional (v. 6) libXfont 1.4.5-3.el6_5 Red Hat Enterprise Linux Workstation (v. 6) libXfont 1.4.5-3.el6_5 Red Hat Enterprise Linux Workstation Optional (v. 6) libXfont 1.4.5-3.el6_5
    fixed: vendor fix RHSA-2014:0018
  • Red Hat Enterprise Linux 7 libXfont
    not affected: vulnerable code not present

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

Exploit prediction

10.25% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • cgit.freedesktop.org http://cgit.freedesktop.org/xorg/lib/libXfont/commit/?id=4d024ac10f964f6bd372ae0dd14f02772a6e5f63 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 9.3 AV:N/AC:M/Au:N/C:C/I:C/A:C

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

Sources

Fencer Intel 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.