#VU38076 Out-of-bounds read in libXfont - CVE-2017-13722
Published: October 11, 2017 / Updated: August 8, 2020
Vulnerability identifier: #VU38076
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2017-13722
CWE-ID: CWE-125
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
libXfont
libXfont
Software vendor:
X.org
X.org
Description
The vulnerability allows a local authenticated user to #BASIC_IMPACT#.
In the pcfGetProperties function in bitmap/pcfread.c in libXfont through 1.5.2 and 2.x before 2.0.2, a missing boundary check (for PCF files) could be used by local attackers authenticated to an Xserver for a buffer over-read, for information disclosure or a crash of the X server.
Remediation
Install update from vendor's website.
External links
- http://www.debian.org/security/2017/dsa-3995
- https://bugzilla.redhat.com/show_bug.cgi?id=1500693
- https://bugzilla.suse.com/show_bug.cgi?id=1049692
- https://cgit.freedesktop.org/xorg/lib/libXfont/commit/?id=672bb944311392e2415b39c0d63b1e1902905bcd
- https://security.gentoo.org/glsa/201711-08
- https://www.x.org/releases/individual/lib/libXfont2-2.0.2.tar.bz2