Description
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.
Published: 2017-10-11
Score: 7.1 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-1126-1 libxfont security update
Debian DSA Debian DSA DSA-3995-1 libxfont security update
EUVD EUVD EUVD-2017-5237 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.
Ubuntu USN Ubuntu USN USN-3442-1 libXfont vulnerabilities
History

Sun, 13 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.00095}

epss

{'score': 0.00103}


Sat, 12 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.00036}

epss

{'score': 0.00095}


cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2024-08-05T19:05:20.077Z

Reserved: 2017-08-28T00:00:00.000Z

Link: CVE-2017-13720

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2017-10-11T17:29:00.303

Modified: 2026-05-13T00:24:29.033

Link: CVE-2017-13720

cve-icon Redhat

Severity : Low

Publid Date: 2017-10-04T00:00:00Z

Links: CVE-2017-13720 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses