Infinite loop in Xen - CVE-2018-10981
Published: May 15, 2018
Vulnerability identifier: #VU12647
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-2018-10981
CWE-ID: CWE-835
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 a failure to reject invalid transitions between states. An adjacent attacker can submit a specially crafted request designed to force the QEMU device model on the system to switch the request between two states, trigger infinite loop and cause the service to crash.
The weakness exists due to a failure to reject invalid transitions between states. An adjacent attacker can submit a specially crafted request designed to force the QEMU device model on the system to switch the request between two states, trigger infinite loop and cause the service to crash.
Affected software
Xen
Debian Linux
Gentoo Linux
Fedora
xen (Alpine package)
openSUSE Leap
xen
Debian Linux
Gentoo Linux
Fedora
xen (Alpine package)
openSUSE Leap
xen
How to mitigate CVE-2018-10981
Install update from vendor's website.
xen (Alpine package) - update to 4.6.6-r5
xen - addressed in versions 4.8.3-5.fc26, 4.9.2-3.fc27, 4.10.1-2.fc28
xen - addressed in versions 4.8.3-5.fc26, 4.9.2-3.fc27, 4.10.1-2.fc28