Denial of Service Vulnerability in Xenstore Component by Xen Project
CVE-2022-42315

6.5MEDIUM

Key Information:

Vendor

Xen Project
Status
Xen Project
Vendor
CVE Published:
1 November 2022

What is CVE-2022-42315?

The vulnerability in the Xenstore component allows malicious users to exploit it by triggering excessive memory allocation, which can lead to a Denial of Service (DoS). This can occur through various means such as issuing excessive new requests without reading the responses, generating numerous watch events, creating maximum-sized nodes, or accessing multiple nodes within a single transaction. If successfully executed, these actions result in the xenstored service becoming unresponsive due to memory exhaustion.

Affected Version(s)

xen consult Xen advisory XSA-326

References

https://xenbits.xenproject.org/xsa/advisory-326.txt
http://xenbits.xen.org/xsa/advisory-326.html
https://www.debian.org/security/2022/dsa-5272
vendor-advisory

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

{'credit_data': {'description': {'description_data': [{'lang': 'eng', 'value': 'This issue was discovered by Julien Grall of Amazon.'}]}}}
.