CVE-2017-12186: Input Validation
Missing length validation was found in X-Resource extension.
Upstream patch:
https://cgit.freedesktop.org/xorg/xserver/commit/?id=cad5a1050b7184d828aef9c1dd151c3ab649d37e
Other sources
xorg-x11-server before 1.19.5 was missing length validation in X-Resource extension allowing malicious X client to cause X server to crash or possibly execute arbitrary code.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
debian/xorg-serverto a version that resolves this vulnerability.Fixed in 2:1.20.4-1+deb10u4Fixed in 2:1.20.4-1+deb10u9Fixed in 2:1.20.11-1+deb11u6Fixed in 2:21.1.7-3Fixed in 2:21.1.8-1 - Upgrade
Upgrade
redhat/xorg-x11-serverto a version that resolves this vulnerability.Fixed in 1.19.5 - Upgrade
Upgrade
alpine/xorg-serverto a version that resolves this vulnerability.Fixed in 1.19.5-r0 - Upgrade
Upgrade
xorg-x11-serverto a version that resolves this vulnerability.Fixed in 1.19.5
Event History
Frequently Asked Questions
What is the severity of CVE-2017-12186?
CVE-2017-12186 has been classified as a moderate severity vulnerability.
How do I fix CVE-2017-12186?
To fix CVE-2017-12186, upgrade to the patched versions of xorg-server listed in the advisories from your distribution.
What software is affected by CVE-2017-12186?
CVE-2017-12186 affects various versions of xorg-server on both Debian and Red Hat systems.
What type of vulnerability is CVE-2017-12186?
CVE-2017-12186 is a vulnerability due to missing length validation in the X-Resource extension.
Is there a known exploit for CVE-2017-12186?
As of now, there are no widespread known exploits for CVE-2017-12186.