CVE-2017-13720
libXfont Pattern Match Buffer Over-read
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.
INFO
Published Date :
Oct. 11, 2017, 5:29 p.m.
Last Modified :
Nov. 21, 2024, 3:11 a.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
5.2
Exploitability Score :
1.8
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2017-13720.
| URL | Resource |
|---|---|
| http://www.debian.org/security/2017/dsa-3995 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1500690 | Issue Tracking Third Party Advisory |
| https://bugzilla.suse.com/show_bug.cgi?id=1054285 | Issue Tracking Third Party Advisory |
| https://cgit.freedesktop.org/xorg/lib/libXfont/commit/?id=d1e670a4a8704b8708e493ab6155589bcd570608 | Patch Third Party Advisory |
| https://security.gentoo.org/glsa/201711-08 | |
| https://www.x.org/releases/individual/lib/libXfont2-2.0.2.tar.bz2 | Vendor Advisory |
| http://www.debian.org/security/2017/dsa-3995 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1500690 | Issue Tracking Third Party Advisory |
| https://bugzilla.suse.com/show_bug.cgi?id=1054285 | Issue Tracking Third Party Advisory |
| https://cgit.freedesktop.org/xorg/lib/libXfont/commit/?id=d1e670a4a8704b8708e493ab6155589bcd570608 | Patch Third Party Advisory |
| https://security.gentoo.org/glsa/201711-08 | |
| https://www.x.org/releases/individual/lib/libXfont2-2.0.2.tar.bz2 | Vendor Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2017-13720 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2017-13720 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference http://www.debian.org/security/2017/dsa-3995 Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=1500690 Added Reference https://bugzilla.suse.com/show_bug.cgi?id=1054285 Added Reference https://cgit.freedesktop.org/xorg/lib/libXfont/commit/?id=d1e670a4a8704b8708e493ab6155589bcd570608 Added Reference https://security.gentoo.org/glsa/201711-08 Added Reference https://www.x.org/releases/individual/lib/libXfont2-2.0.2.tar.bz2 -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Nov. 13, 2017
Action Type Old Value New Value Added Reference https://security.gentoo.org/glsa/201711-08 [No Types Assigned] -
CVE Modified by [email protected]
Nov. 05, 2017
Action Type Old Value New Value Added Reference http://www.debian.org/security/2017/dsa-3995 [No Types Assigned] -
Initial Analysis by [email protected]
Nov. 03, 2017
Action Type Old Value New Value Added CVSS V2 (AV:L/AC:L/Au:N/C:P/I:N/A:P) Added CVSS V3 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=1500690 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=1500690 Issue Tracking, Third Party Advisory Changed Reference Type https://cgit.freedesktop.org/xorg/lib/libXfont/commit/?id=d1e670a4a8704b8708e493ab6155589bcd570608 No Types Assigned https://cgit.freedesktop.org/xorg/lib/libXfont/commit/?id=d1e670a4a8704b8708e493ab6155589bcd570608 Patch, Third Party Advisory Changed Reference Type https://bugzilla.suse.com/show_bug.cgi?id=1054285 No Types Assigned https://bugzilla.suse.com/show_bug.cgi?id=1054285 Issue Tracking, Third Party Advisory Changed Reference Type https://www.x.org/releases/individual/lib/libXfont2-2.0.2.tar.bz2 No Types Assigned https://www.x.org/releases/individual/lib/libXfont2-2.0.2.tar.bz2 Vendor Advisory Added CWE CWE-125 Added CPE Configuration OR *cpe:2.3:a:x.org:libxfont:1.5.2:*:*:*:*:*:*:* (and previous) *cpe:2.3:a:x.org:libxfont:2.0.0:*:*:*:*:*:*:* *cpe:2.3:a:x.org:libxfont:2.0.1:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2017-13720 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2017-13720
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.06 }} 0.00%
score
0.24592
percentile