#VU70469 Resource management error in Xen - CVE-2022-42328

Vulnerability identifier: #VU70469

Vulnerability risk: Medium

CVSSv4.0: [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/E:U/U:Green]

CVE-ID: CVE-2022-42328

CWE-ID: CWE-399

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Xen
Server applications / Virtualization software

Vendor: Xen Project

Description

The vulnerability allows an attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper management of internal resources. An attacker with access to the guest OS can trigger deadlock in Linux netback driver and perform a denial of service (DoS) attack of the host via the paravirtualized network interface.

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-424.txt
http://www.openwall.com/lists/oss-security/2022/12/08/3
http://www.openwall.com/lists/oss-security/2022/12/08/2
http://www.openwall.com/lists/oss-security/2022/12/09/2

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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