Vulnerability identifier: #VU78439

Vulnerability risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-33746

CWE-ID: CWE-400

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Xen
Server applications / Virtualization software

Vendor: Xen Project

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to application does not properly control consumption of internal resources when freeing the P2M pool. A local user can trigger resource exhaustion and perform a denial of service (DoS) 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-410.txt
http://xenbits.xen.org/xsa/advisory-410.html
http://www.openwall.com/lists/oss-security/2022/10/11/3
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XWSC77GS5NATI3TT7FMVPULUPXR635XQ/
http://www.debian.org/security/2022/dsa-5272
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TJOMUNGW6VTK5CZZRLWLVVEOUPEQBRHI/
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YZVXG7OOOXCX6VIPEMLFDPIPUTFAYWPE/

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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.