High severity · published Feb 15, 2024
CVE-2022-23092
The implementation of lib9p's handling of RWALK messages was missing a bounds check needed when unpacking the message contents
8.8
CVSS
0.7%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 51% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FR
Freebsd · Freebsd
13.0; 13.0; 13.0; 13.0; 13.0; 13.0; +19 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-23092
CVE.org
https://www.cve.org/CVERecord?id=CVE-2022-23092
Vendor Advisory
https://security.freebsd.org/advisories/FreeBSD-SA-22:12.lib9p.asc
Third Party Advisory
https://security.netapp.com/advisory/ntap-20240415-0009/
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