Denial of service in Xen - CVE-2018-19965
Published: November 21, 2018 / Updated: December 13, 2018
Vulnerability identifier: #VU16005
CSH Severity: Low
CVSS v4: 7.1 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2018-19965
CWE-ID: CWE-264
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows an adjacent attacker to cause DoS condition on the target system.
The weakness exists due to an error when attempting to use INVPCID with a non-canonical addresses. An adjacent attacker can cause the service to crash.
The weakness exists due to an error when attempting to use INVPCID with a non-canonical addresses. An adjacent attacker can cause the service to crash.
Affected software
Xen
xen (Alpine package)
xen (Debian package)
xen
Opensuse
Fedora
xen (Alpine package)
xen (Debian package)
xen
Opensuse
Fedora
How to mitigate CVE-2018-19965
Install update from vendor's website.
xen (Alpine package) - update to 4.9.3-r1
xen (Debian package) - update to 4.8.5+shim4.10.2+xsa282-1+deb9u11
xen - addressed in versions 4.10.2-4.fc28, 4.10.3-1.fc28, 4.10.3-2.fc28, 4.11.0-10.fc29
xen (Debian package) - update to 4.8.5+shim4.10.2+xsa282-1+deb9u11
xen - addressed in versions 4.10.2-4.fc28, 4.10.3-1.fc28, 4.10.3-2.fc28, 4.11.0-10.fc29