The implementation of lib9p's handling of RWALK messages was missing a bounds check needed when unpacking the message contents. The missing check means that the receipt of a specially crafted message will cause lib9p to overwrite unrelated memory. The bug can be triggered by a malicious bhyve guest kernel to overwrite memory in the bhyve(8) process. This could potentially lead to user-mode code execution on the host, subject to bhyve's Capsicum sandbox.
Published 2024-02-15 06:15:45
Updated 2024-08-29 20:35:06
Source FreeBSD
View at NVD,   CVE.org

Products affected by CVE-2022-23092

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Exploit prediction scoring system (EPSS) score for CVE-2022-23092

0.04%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 7 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2022-23092

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
8.8
HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
2.8
5.9
134c704f-9b21-4f2e-91b3-4a467353bcc0 2024-08-29

CWE ids for CVE-2022-23092

  • The product writes data past the end, or before the beginning, of the intended buffer.
    Assigned by: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

References for CVE-2022-23092

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