Vulnerability CVE-2017-13722
Published: 2017-10-11

Description:
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.

Type:

CWE-125

 (Out-of-bounds Read)

CVSS2 => (AV:L/AC:L/Au:N/C:P/I:N/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
3.6/10
4.9/10
3.9/10
Exploit range
Attack complexity
Authentication
Local
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
None
Partial
Affected software
X.org -> Libxfont 

 References:
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
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