Vulnerability identifier: #VU8427
Vulnerability risk: Low
CVSSv3.1: 7.7 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-264
Exploitation vector: Local network
Exploit availability: No
Vulnerable software:
Xen
Server applications /
Virtualization software
Vendor: Xen Project
Description
The vulnerability allows an adjacent attacker to gain elevated privileges or cause DoS condition on the host system.
The weakness exists due to a flaw in grant unmapping. A local attacker on
an x86 PV guest system can gain
elevated privileges on the host system or cause the hypervisor to crash.
Mitigation
Install update from vendor's website.
Vulnerable software versions
Xen: 4.5.0 - 4.9.0
External links
http://xenbits.xen.org/xsa/advisory-234.html
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.