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TI-2017-09995 Aliases CVE-2017-13720GHSA-jrrp-87j9-7387

In the PatternMatch function in fontfile/fontdir.c in libXfont through 1.5.2 and 2.x…

Priority LOW 32CWE-125Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · None · High
Fix status
Will not fix Red Hat: no fix planned

Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat.

Summary

In the PatternMatch function in fontfile/fontdir.c in libXfont through 1.5.2 and 2.x before 2.0.2, an attacker with access to an X connection can cause a buffer over-read during pattern matching of fonts, leading to information disclosure or a crash (denial of service). This occurs because '\0' characters are incorrectly skipped in situations involving ? characters.

Why it matters now

EPSS 0.00442 38th percentileScored 2026-11-07
Fix Will not fix Red Hat: no fix planned

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:a:x.org:libxfont:*:*:*:*:*:*:*:*up to 1.5.2Vulnerablex.org
cpe:2.3:a:x.org:libxfont:2.0.0:*:*:*:*:*:*:*2.0.0Vulnerablex.org
cpe:2.3:a:x.org:libxfont:2.0.1:*:*:*:*:*:*:*2.0.1Vulnerablex.org
  • cpe:2.3:a:x.org:libxfont:*:*:*:*:*:*:*:* Versions up to 1.5.2 Vulnerable ·x.org
  • cpe:2.3:a:x.org:libxfont:2.0.0:*:*:*:*:*:*:* Versions 2.0.0 Vulnerable ·x.org
  • cpe:2.3:a:x.org:libxfont:2.0.1:*:*:*:*:*:*:* Versions 2.0.1 Vulnerable ·x.org

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat rating: Low. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 5AffectedNo fix planned: Will not fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Will not fix
Red Hat Enterprise Linux 7AffectedNo fix planned: Will not fix

Timeline

  1. 2026-10-02 Threatist record created from CVE-2017-13720
  2. 2026-10-03 Alias added: GHSA-jrrp-87j9-7387

References

Patch 1

Advisory 5

  • TI-2007-01295 Integer overflow in the bdfReadCharacters function in bdfread.c in (1) X.Org libXfont… CVSS 2.0HIGH 8.5
  • TI-2017-09997 In the pcfGetProperties function in bitmap/pcfread.c in libXfont through 1.5.2 and 2.x… CVSS 3.0HIGH 7.1
  • TI-2007-01296 Integer overflow in the FontFileInitTable function in X.Org libXfont before 20070403… CVSS 2.0LOW 3.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences