CVE-2023-34323
Last modified
CVE-2023-34323 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. 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. EPSS estimates a 0.26% chance of exploitation in the next 30 days.
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).
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Xen | Xen | < 4.17.0 |
References
- https://xenbits.xenproject.org/xsa/advisory-440.htmlPatch, Vendor Advisory
- https://xenbits.xenproject.org/xsa/advisory-440.htmlPatch, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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