CVE-2017-13723

high

Description

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.

References

http://www.debian.org/security/2017/dsa-4000

http://www.openwall.com/lists/oss-security/2017/10/04/10

http://www.securityfocus.com/bid/101253

https://cgit.freedesktop.org/xorg/xserver/commit/?id=94f11ca5cf011ef123bd222cabeaef6f424d76ac

https://lists.debian.org/debian-lts-announce/2017/11/msg00032.html

https://lists.x.org/archives/xorg-announce/2017-October/002808.html

https://security.gentoo.org/glsa/201710-30

Details

Source: MITRE

Published: 2017-10-10

Updated: 2018-02-04

Type: CWE-119

Risk Information

CVSS v2

Base Score: 4.6

Vector: AV:L/AC:L/Au:N/C:P/I:P/A:P

Impact Score: 6.4

Exploitability Score: 3.9

Severity: MEDIUM

CVSS v3

Base Score: 7.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Impact Score: 5.9

Exploitability Score: 1.8

Severity: HIGH