Input validation error in libXtst - CVE-2016-7952
Published: December 13, 2016 / Updated: July 28, 2020
Vulnerability identifier: #VU32236
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2016-7952
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 perform a denial of service (DoS) attack.
X.org libXtst before 1.2.3 allows remote X servers to cause a denial of service (infinite loop) via a reply in the (1) XRecordStartOfData, (2) XRecordEndOfData, or (3) XRecordClientDied category without a client sequence and with attached data.
Affected software
libXtst
libxtst (Alpine package)
Slackware Linux
Fedora
libxtst (Alpine package)
Slackware Linux
Fedora
How to mitigate CVE-2016-7952
Install update from vendor's website.
libXtst - update to 1.2.3
libxtst (Alpine package) - update to 1.2.2-r1
libXtst - addressed in versions 1.2.3-1.fc23, 1.2.3-1.fc24, 1.2.3-1.fc25
libxtst (Alpine package) - update to 1.2.2-r1
libXtst - addressed in versions 1.2.3-1.fc23, 1.2.3-1.fc24, 1.2.3-1.fc25
External References
- http://www.openwall.com/lists/oss-security/2016/10/04/2
- http://www.openwall.com/lists/oss-security/2016/10/04/4
- http://www.securityfocus.com/bid/93375
- http://www.securitytracker.com/id/1036945
- https://cgit.freedesktop.org/xorg/lib/libXtst/commit/?id=9556ad67af3129ec4a7a4f4b54a0d59701beeae3
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AFLHX7WNEUXXDAGR324T35L5P6RRR7GE/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RVEUZRHYY3AJEKMFQ4DS7DX3Y2AICFP7/
- https://lists.x.org/archives/xorg-announce/2016-October/002720.html