Medium severity · published Jan 5, 2024
CVE-2023-34323
When a transaction is committed, C Xenstored will first check the quota is correct before attempting to commit any nodes
5.5
CVSS
0.2%
EPSS
No
On KEV
Description
When a transaction is committed, C Xenstored will first check
the quota is correct before attempting to commit any nodes. It would
be possible that accounting is temporarily negative if a node has
been removed outside of the transaction.
Unfortunately, some versions of C Xenstored are assuming that the
quota cannot be negative and are using assert() to confirm it. This
will lead to C Xenstored crash when tools are built without -DNDEBUG
(this is the default).
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 16% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
XE
Xen · Xen
before 4.17.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-34323
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-34323
Patch
https://xenbits.xenproject.org/xsa/advisory-440.html
xenbits.xen.org
http://xenbits.xen.org/xsa/advisory-440.html
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