Input validation error in Debian Linux - CVE-2017-12178
Published: January 24, 2018 / Updated: August 4, 2020
Vulnerability identifier: #VU33512
CSH Severity: High
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2017-12178
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
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.
Affected software
Debian Linux
Arch Linux
Gentoo Linux
Slackware Linux
xorg-server (Alpine package)
Arch Linux
Gentoo Linux
Slackware Linux
xorg-server (Alpine package)
How to mitigate CVE-2017-12178
Install update from vendor's website.
xorg-server (Alpine package) - update to 1.19.5-r0
External 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