CVE-2017-12178

critical

Description

xorg-x11-server before 1.19.5 had wrong extra length check in ProcXIChangeHierarchy function allowing malicious X client to cause X server to crash or possibly execute arbitrary code.

References

https://bugzilla.redhat.com/show_bug.cgi?id=1509219

https://cgit.freedesktop.org/xorg/xserver/commit/?id=859b08d523307eebde7724fd1a0789c44813e821

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

https://security.gentoo.org/glsa/201711-05

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

Details

Source: MITRE

Published: 2018-01-24

Updated: 2019-10-09

Type: CWE-20

Risk Information

CVSS v2

Base Score: 7.5

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

Impact Score: 6.4

Exploitability Score: 10

Severity: HIGH

CVSS v3

Base Score: 9.8

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

Impact Score: 5.9

Exploitability Score: 3.9

Severity: CRITICAL