CVE-2023-3494
CVSS V2 None
CVSS V3 None
Description
The fwctl driver implements a state machine which is executed when a bhyve guest accesses certain x86 I/O ports. The interface lets the guest copy a string into a buffer resident in the bhyve process' memory. A bug in the state machine implementation can result in a buffer overflowing when copying this string. Malicious, privileged software running in a guest VM can exploit the buffer overflow to achieve code execution on the host in the bhyve userspace process, which typically runs as root, mitigated by the capabilities assigned through the Capsicum sandbox available to the bhyve process.
Overview
- CVE ID
- CVE-2023-3494
- Assigner
- freebsd
- Vulnerability Status
- PUBLISHED
- Published Version
- 2023-08-01T22:13:21.634Z
- Last Modified Date
- 2023-08-01T22:34:32.578Z
Weakness Enumerations
References
| Reference URL | Reference Tags |
|---|---|
| https://security.FreeBSD.org/advisories/FreeBSD-SA-23:07.bhyve.asc | vendor-advisory |
| https://security.netapp.com/advisory/ntap-20230831-0006/ |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2023-3494 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-3494 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2024-06-24 20:20:27 | Added to TrackCVE |