<p>Upgrade <code>Alpine:3.20</code> <code>xen</code> to version 4.17.0-r0 or higher.</p>

Memory Leak Affecting xen package, versions <4.17.0-r0

Threat Intelligence

0.05% (19^th percentile)

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Snyk ID SNYK-ALPINE320-XEN-7012521
published 23 May 2024
disclosed 1 Nov 2022

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Introduced: 1 Nov 2022

CVE-2022-42322 Open this link in a new tab CWE-401 Open this link in a new tab

How to fix?

Upgrade Alpine:3.20 xen to version 4.17.0-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream xen package and not the xen package as distributed by Alpine. See How to fix? for Alpine:3.20 relevant fixed versions and status.

Xenstore: Cooperating guests can create arbitrary numbers of nodes T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Since the fix of XSA-322 any Xenstore node owned by a removed domain will be modified to be owned by Dom0. This will allow two malicious guests working together to create an arbitrary number of Xenstore nodes. This is possible by domain A letting domain B write into domain A's local Xenstore tree. Domain B can then create many nodes and reboot. The nodes created by domain B will now be owned by Dom0. By repeating this process over and over again an arbitrary number of nodes can be created, as Dom0's number of nodes isn't limited by Xenstore quota.

References

CVSS Scores

version 3.1

Attack Vector (AV)

Local
Attack Complexity (AC)

Low
Privileges Required (PR)

Low
User Interaction (UI)

None

Scope (S)

Unchanged

Confidentiality (C)

None
Integrity (I)

None
Availability (A)

High