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Out-of-bounds Read Affecting libxfont1 package, versions *

low

Snyk CVSS

    Attack Complexity Low
    Confidentiality High
    Availability High

    Threat Intelligence

    EPSS 0.06% (26th percentile)
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NVD
7.1 high
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Red Hat
4.4 medium

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  • Snyk ID SNYK-DEBIAN9-LIBXFONT1-271097
  • published 11 Oct 2017
  • disclosed 11 Oct 2017
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Introduced: 11 Oct 2017

CVE-2017-13720 Open this link in a new tab
CWE-125 Open this link in a new tab

How to fix?

There is no fixed version for Debian:9 libxfont1.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libxfont1 package and not the libxfont1 package as distributed by Debian. See How to fix? for Debian:9 relevant fixed versions and status.

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.