CVE-2013-6462
CVE-2013-6462 is a critical-severity vulnerability in X Libxfont with a CVSS 2.0 base score of 9.3. Its EPSS exploit-prediction score of 10% places it in the 95th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-119.
Key facts
- Severity: Critical (CVSS 2.0 base score 9.3)
- EPSS exploit prediction: 10% (95th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-119
- Affected product: X Libxfont
- Published:
- Last modified:
Description
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.
Frequently asked questions
- What is CVE-2013-6462?
- 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.
- How severe is CVE-2013-6462?
- CVE-2013-6462 has a CVSS 2.0 base score of 9.3, rated critical severity.
- Is CVE-2013-6462 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 10% (95th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2013-6462?
- CVE-2013-6462 primarily affects X Libxfont. In total, 23 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2013-6462?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2013-6462 published?
- CVE-2013-6462 was published on 2014-01-09 and last updated on 2026-06-17.
References
- http://cgit.freedesktop.org/xorg/lib/libXfont/commit/?id=4d024ac10f964f6bd372ae0dd14f02772a6e5f63
- http://lists.opensuse.org/opensuse-updates/2014-01/msg00050.html
- http://lists.opensuse.org/opensuse-updates/2014-01/msg00052.html
- http://lists.x.org/archives/xorg-announce/2014-January/002389.html
- http://osvdb.org/101842
- http://rhn.redhat.com/errata/RHSA-2014-0018.html
- http://seclists.org/oss-sec/2014/q1/33
- http://secunia.com/advisories/56240
- http://secunia.com/advisories/56336
- http://secunia.com/advisories/56357
- http://secunia.com/advisories/56371
- http://www.debian.org/security/2014/dsa-2838
- http://www.oracle.com/technetwork/topics/security/cpuapr2014-1972952.html
- http://www.securityfocus.com/bid/64694
- http://www.ubuntu.com/usn/USN-2078-1
- https://exchange.xforce.ibmcloud.com/vulnerabilities/90123
Affected products (23)
- cpe:2.3:a:x:libxfont:1.1.0:*:*:*:*:*:*:*
- cpe:2.3:a:x:libxfont:1.2.0:*:*:*:*:*:*:*
- cpe:2.3:a:x:libxfont:1.2.1:*:*:*:*:*:*:*
- cpe:2.3:a:x:libxfont:1.2.2:*:*:*:*:*:*:*
- cpe:2.3:a:x:libxfont:1.2.3:*:*:*:*:*:*:*
- cpe:2.3:a:x:libxfont:1.2.4:*:*:*:*:*:*:*
- cpe:2.3:a:x:libxfont:1.2.5:*:*:*:*:*:*:*
- cpe:2.3:a:x:libxfont:1.2.6:*:*:*:*:*:*:*
- cpe:2.3:a:x:libxfont:1.2.7:*:*:*:*:*:*:*
- cpe:2.3:a:x:libxfont:1.2.8:*:*:*:*:*:*:*
- cpe:2.3:a:x:libxfont:1.2.9:*:*:*:*:*:*:*
- cpe:2.3:a:x:libxfont:1.3.0:*:*:*:*:*:*:*
- cpe:2.3:a:x:libxfont:1.3.1:*:*:*:*:*:*:*
- cpe:2.3:a:x:libxfont:1.3.2:*:*:*:*:*:*:*
- cpe:2.3:a:x:libxfont:1.3.3:*:*:*:*:*:*:*
- cpe:2.3:a:x:libxfont:1.3.4:*:*:*:*:*:*:*
- cpe:2.3:a:x:libxfont:1.4.0:*:*:*:*:*:*:*
- cpe:2.3:a:x:libxfont:1.4.1:*:*:*:*:*:*:*
- cpe:2.3:a:x:libxfont:1.4.2:*:*:*:*:*:*:*
- cpe:2.3:a:x:libxfont:1.4.3:*:*:*:*:*:*:*
- cpe:2.3:a:x:libxfont:1.4.4:*:*:*:*:*:*:*
- cpe:2.3:a:x:libxfont:1.4.5:*:*:*:*:*:*:*
- cpe:2.3:a:x:libxfont:1.4.6:*:*:*:*:*:*:*
More vulnerabilities in X Libxfont
- CVE-2007-5199 — Critical (CVSS 9.8): A single byte overflow in catalogue.c in X.Org libXfont 1.3.1 allows remote attackers to have unspecified impact.
- CVE-2011-2895 — Critical (CVSS 9.3): The LZW decompressor in (1) the BufCompressedFill function in fontfile/decompress.c in X.Org libXfont before 1.4.4 and…
- CVE-2015-1804 — High (CVSS 8.5): The bdfReadCharacters function in bitmap/bdfread.c in X.Org libXfont before 1.4.9 and 1.5.x before 1.5.1 does not…
- CVE-2015-1803 — High (CVSS 8.5): The bdfReadCharacters function in bitmap/bdfread.c in X.Org libXfont before 1.4.9 and 1.5.x before 1.5.1 does not…
- CVE-2015-1802 — High (CVSS 8.5): The bdfReadProperties function in bitmap/bdfread.c in X.Org libXfont before 1.4.9 and 1.5.x before 1.5.1 allows remote…
- CVE-2014-0211 — High (CVSS 7.5): Multiple integer overflows in the (1) fs_get_reply, (2) fs_alloc_glyphs, and (3) fs_read_extent_info functions in X.Org…
All CVEs affecting X Libxfont →
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