NULL pointer dereference in Xen - CVE-2018-7542
Published: May 10, 2018
Vulnerability identifier: #VU12546
CSH Severity: Low
CVSS v4: 5.3 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2018-7542
CWE-ID: CWE-476
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 NULL pointer dereference. An adjacent attacker can cause the service to crash by leveraging the mishandling of configurations that lack a Local APIC.
The weakness exists due to NULL pointer dereference. An adjacent attacker can cause the service to crash by leveraging the mishandling of configurations that lack a Local APIC.
Affected software
Xen
Debian Linux
Gentoo Linux
SUSE Linux
Fedora
xen (Alpine package)
xen
Debian Linux
Gentoo Linux
SUSE Linux
Fedora
xen (Alpine package)
xen
How to mitigate CVE-2018-7542
Install update from vendor's website.
xen (Alpine package) - update to 4.8.2-r6
xen - addressed in versions 4.8.3-3.fc26, 4.9.1-5.fc27
xen - addressed in versions 4.8.3-3.fc26, 4.9.1-5.fc27