Denial of service in Xen - CVE-2018-15469
Published: August 20, 2018 / Updated: August 21, 2018
Vulnerability identifier: #VU14472
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-2018-15469
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 vulnerability exists due to improper implementation of version 2 of grant tables in the affected software, in the hypervisor or in Linux. An adjacent attacker can request version 2 grant tables, trigger a BUG() check and cause the service to crash.
Affected software
Xen
Gentoo Linux
Opensuse
Fedora
xen (Alpine package)
xen
Gentoo Linux
Opensuse
Fedora
xen (Alpine package)
xen
How to mitigate CVE-2018-15469
Install update from vendor's website.
xen (Alpine package) - update to 4.8.5-r0
xen - addressed in versions 4.9.2-7.fc27, 4.10.1-6.fc28
xen - addressed in versions 4.9.2-7.fc27, 4.10.1-6.fc28