CVE-2022-23092

Missing bounds check in 9p message handling

CVSS 8.8 HIGHEPSS 0.7%CWE-787

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 8.8EPSS 0.7%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado

Lifecycle

15 Feb 2024Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

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

Affected products

FreeBSD · FreeBSD

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References

https://security.freebsd.org/advisories/FreeBSD-SA-22:12.lib9p.asc https://security.netapp.com/advisory/ntap-20240415-0009/