High severity · published Jan 26, 2023
CVE-2022-42330
Guests can cause Xenstore crash via soft reset When a guest issues a "Soft Reset" (e.g
7.5
CVSS
1.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.4% · higher than 72% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
XE
Xen · Xen
4.17.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-42330
CVE.org
https://www.cve.org/CVERecord?id=CVE-2022-42330
security.gentoo.org
https://security.gentoo.org/glsa/202402-07
Vendor Advisory
https://xenbits.xenproject.org/xsa/advisory-425.txt
xenbits.xen.org
http://xenbits.xen.org/xsa/advisory-425.html
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