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FreeBSD: VID-3B9590A1-E358-11E7-A293-54E1AD3D6335 (CVE-2017-13720): libXfont -- multiple memory leaks

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FreeBSD: VID-3B9590A1-E358-11E7-A293-54E1AD3D6335 (CVE-2017-13720): libXfont -- multiple memory leaks

Severity
4
CVSS
(AV:L/AC:L/Au:N/C:P/I:N/A:P)
Published
10/04/2017
Created
07/25/2018
Added
12/20/2017
Modified
05/07/2019

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.

Solution(s)

  • freebsd-upgrade-package-libxfont
  • freebsd-upgrade-package-libxfont2

References

  • DSA-3995
  • CVE-2017-13720
  • USN-3442-1

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