PT-2022-7330 · Xenstore+1 · Xenstore+1

Julien Grall · Published 2022-11-01 · Updated 2022-12-06 · CVE-2022-42318

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Xenstore (affected versions not specified)

Description The issue is related to the uncontrolled allocation of resources in Xenstore, which can lead to a Denial of Service (DoS) of xenstored. Malicious guests can cause xenstored to allocate large amounts of memory by issuing new requests without reading responses, causing responses to be buffered in memory, generating a large number of watch events, creating many nodes with maximum size and path length, or accessing many nodes inside a transaction.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

DoS

Allocation of Resources Without Limits

Weakness Enumeration

CWE-770

Related Identifiers

BDU:2024-03586

CVE-2022-42318

DSA-5272-1

OPENSUSE-SU-2022_3947-1

OPENSUSE-SU-2022_4007-1

SUSE-SU-2022:3925-1

SUSE-SU-2022:3928-1

SUSE-SU-2022:3947-1

SUSE-SU-2022:3960-1

SUSE-SU-2022:3971-1

SUSE-SU-2022:4007-1

SUSE-SU-2022:4051-1

SUSE-SU-2022:4241-1

SUSE-SU-2022:4332-1

Affected Products

Suse

Xenstore

References · 84

• http://xenbits.xen.org/xsa/advisory-326.html · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YTMITQBGC23MSDHUCAPCVGLMVXIBXQTQ · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2022:4007-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2022:3960-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-42318 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YZVXG7OOOXCX6VIPEMLFDPIPUTFAYWPE · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2022:3928-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2022-42318 · Vendor Advisory
• https://debian.org/security/2022/dsa-5272 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2022:4332-1 · Vendor Advisory
• https://xenbits.xenproject.org/xsa/advisory-326.txt · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-42318 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZLI2NPNEH7CNJO3VZGQNOI4M4EWLNKPZ · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2022:3925-1 · Vendor Advisory
• https://osv.dev/vulnerability/ALPINE-CVE-2022-42318 · Vendor Advisory