Resource management error in Xen - CVE-2023-46841
Published: February 27, 2024
Vulnerability identifier: #VU86860
CSH Severity: Medium
CVSS v4: 8.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H]
CVE-ID: CVE-2023-46841
CWE-ID: CWE-399
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote guest to perform a denial of service (DoS) attack.
The vulnerability exists due to incorrect implementation of the Shadow Stacks (CET-SS) feature. An unprivileged guest can cause a hypervisor crash, causing a Denial of Service (DoS) of the entire host.
Affected software
Xen
Gentoo Linux
Debian Linux
Fedora
xen
app-emulation/xen
xen (Debian package)
Gentoo Linux
Debian Linux
Fedora
xen
app-emulation/xen
xen (Debian package)
How to mitigate CVE-2023-46841
Install updates from vendor's website.
xen - addressed in versions 4.17.2-7.fc38, 4.17.2-7.fc39, 4.18.0-6.fc40, 4.18.1-1.fc40
app-emulation/xen - update to 4.17.4
xen (Debian package) - update to 4.17.5+23-ga4e5191dc0-1
app-emulation/xen - update to 4.17.4
xen (Debian package) - update to 4.17.5+23-ga4e5191dc0-1