#VU70586 Improper Privilege Management in Xen - CVE-2022-42320
Published: January 2, 2023
Vulnerability identifier: #VU70586
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2022-42320
CWE-ID: CWE-269
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Xen
Xen
Software vendor:
Xen Project
Xen Project
Description
The vulnerability allows a malicious guest to escalate privileges.
The vulnerability exists due to improper privilege management in Xenstore. A malicious new guest domain can access resources belonging to a previous domain. The impact depends on the software in use and cal result in a denial of service, information disclosure or privilege escalation.
Remediation
Install updates from vendor's website.
External links
- https://xenbits.xenproject.org/xsa/advisory-417.txt
- http://xenbits.xen.org/xsa/advisory-417.html
- http://www.openwall.com/lists/oss-security/2022/11/01/7
- https://www.debian.org/security/2022/dsa-5272
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZLI2NPNEH7CNJO3VZGQNOI4M4EWLNKPZ/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YZVXG7OOOXCX6VIPEMLFDPIPUTFAYWPE/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YTMITQBGC23MSDHUCAPCVGLMVXIBXQTQ/