CVE-2022-23092 — HIGH (8.8)

Vulnerability Description

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 Score

8.8

HIGH

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Freebsd	Freebsd	13.0

Related Weaknesses (CWE)

CWE-787

References

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

FAQ

What is CVE-2022-23092?

CVE-2022-23092 is a vulnerability with a CVSS score of 8.8 (HIGH). 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...

How severe is CVE-2022-23092?

CVE-2022-23092 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2022-23092?

Check the references section above for vendor advisories and patch information. Affected products include: Freebsd Freebsd.