Vulnerability identifier: #VU63311

Vulnerability risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-23042

CWE-ID: CWE-617

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Xen
Server applications / Virtualization software

Vendor: Xen Project

Description

The vulnerability allows a local user to bypass implemented security restrictions.

The vulnerability exists due to reachable assertion in the netfront ring buffer. A malicious backend can exploit the race condition and read or write data or perform a denial of service attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Xen: All versions

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External links
http://xenbits.xenproject.org/xsa/advisory-396.txt

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.