#VU81886 Stack-based buffer overflow in Xen - CVE-2023-34325

Vulnerability identifier: #VU81886

Vulnerability risk: High

CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H/E:U/U:Amber

CVE-ID: CVE-2023-34325

CWE-ID: CWE-121

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerable software:
Xen

Software vendor:
Xen Project

The vulnerability allows a remote guest to escalate privileges on the system.

The vulnerability exists due to insufficient validation of user-supplied input in libfsimage. A remote guest can use pygrab to trigger stack-based buffer overflow and execute arbitrary code on the host system.

Install updates from vendor's website.

• https://xenbits.xen.org/xsa/advisory-443.html