SARA / Free Tools / CVE / CVE-2022-42309

CVE-2022-42309 — Xenstore: Guests can crash xenstored Due to a bug in the fix of XSA-115 a malici

Xenstore: Guests can crash xenstored Due to a bug in the fix of XSA-115 a malicious guest can cause xenstored to use a wrong pointer during node creation in an error path, resulting in a crash of xenstored or a memory corruption in xenstored causing further damage. Entering the e

CVSS
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EPSS
0.06% (top 82.60%)
CWE
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Published
2022-11-01T00:00:00.000Z
Last modified
2024-08-03T13:03:45.940Z
CVSS vector
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01What is this vulnerability?

Xenstore: Guests can crash xenstored Due to a bug in the fix of XSA-115 a malicious guest can cause xenstored to use a wrong pointer during node creation in an error path, resulting in a crash of xenstored or a memory corruption in xenstored causing further damage. Entering the error path can be controlled by the guest e.g. by exceeding the quota value of maximum nodes per domain.

02Affected products

VendorProductVersions
Xenxenconsult Xen advisory XSA-414

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

09References

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