Information disclosure in Xen - CVE-2023-34321
Published: September 5, 2023
Vulnerability identifier: #VU80470
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2023-34321
CWE-ID: CWE-200
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a malicious guest to gain access to potentially sensitive information.
The vulnerability exists due to an error when cleaning cache on arm32 systems. A malicious guest can read sensitive data from memory of another guest.
Affected software
Xen
Gentoo Linux
Fedora
xen
app-emulation/xen
Gentoo Linux
Fedora
xen
app-emulation/xen
How to mitigate CVE-2023-34321
Install updates from vendor's website.
xen - addressed in versions 4.16.5-2.fc37, 4.17.2-2.fc38, 4.17.2-2.fc39
app-emulation/xen - update to 4.17.4
app-emulation/xen - update to 4.17.4