Vulnerability Details : CVE-2017-13723
In X.Org Server (aka xserver and xorg-server) before 1.19.4, a local attacker authenticated to the X server could overflow a global buffer, causing crashes of the X server or potentially other problems by injecting large or malformed XKB related atoms and accessing them via xkbcomp.
Vulnerability category: Overflow
Exploit prediction scoring system (EPSS) score for CVE-2017-13723
Probability of exploitation activity in the next 30 days: 0.04%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 6 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2017-13723
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Source |
---|---|---|---|---|---|
4.6
|
MEDIUM | AV:L/AC:L/Au:N/C:P/I:P/A:P |
3.9
|
6.4
|
nvd@nist.gov |
7.8
|
HIGH | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
1.8
|
5.9
|
nvd@nist.gov |
CWE ids for CVE-2017-13723
-
The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2017-13723
-
http://www.securityfocus.com/bid/101253
X.Org X Server 'xkbtext.c' Denial of Service VulnerabilityThird Party Advisory;VDB Entry
-
http://www.openwall.com/lists/oss-security/2017/10/04/10
oss-security - Fwd: X server fixes for CVE-2017-13721 & CVE-2017-13723Mailing List;Third Party Advisory
-
https://lists.debian.org/debian-lts-announce/2017/11/msg00032.html
[SECURITY] [DLA 1186-1] xorg-server security update
-
https://security.gentoo.org/glsa/201710-30
X.Org Server: Multiple vulnerabilities (GLSA 201710-30) — Gentoo securityThird Party Advisory
-
http://www.debian.org/security/2017/dsa-4000
Debian -- Security Information -- DSA-4000-1 xorg-serverThird Party Advisory
-
https://cgit.freedesktop.org/xorg/xserver/commit/?id=94f11ca5cf011ef123bd222cabeaef6f424d76ac
xorg/xserver - X server (mirrored from https://gitlab.freedesktop.org/xorg/xserver)Third Party Advisory
-
https://lists.x.org/archives/xorg-announce/2017-October/002808.html
[ANNOUNCE] xorg-server 1.19.4Vendor Advisory
Products affected by CVE-2017-13723
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:a:x.org:xorg-server:*:*:*:*:*:*:*:*