Is CVE-2022-42330 in the CISA KEV catalog?

No. CVE-2022-42330 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2022-42330?

CVE-2022-42330 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2022-42330?

CVE-2022-42330 has an EPSS score of 1.36% (68th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2022-42330?

Upgrade xen on debian 12 to 4.17.0+24-g2f8851c37f-2 or later.

CVE & CISA-KEV Catalog

CVE-2022-42330

HIGH

7.5

CVSS v3

NVD

Description

Guests can cause Xenstore crash via soft reset When a guest issues a "Soft Reset" (e.g. for performing a kexec) the libxl based Xen toolstack will normally perform a XS_RELEASE Xenstore operation. Due to a bug in xenstored this can result in a crash of xenstored. Any other use of XS_RELEASE will have the same impact.

How to fix

Remediation Available

xenDebian

Fixed in:4.17.0+24-g2f8851c37f-2CVE-2022-42330

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

1.36%probability of exploitation in 30 days

68thpercentile

Moderate risk: more likely to be exploited than 68% of all known CVEs.

References

Vendor Advisory1

xenbits.xenproject.org

Other references2

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.