In FreeBSD before 11.2-STABLE(r341486) and 11.2-RELEASE-p6, insufficient bounds checking in one of the device models provided by bhyve can permit a guest operating system to overwrite memory in the bhyve host possibly permitting arbitrary code execution. A guest OS using a firmware image can cause the bhyve process to crash, or possibly execute arbitrary code on the host as root.
The product writes data past the end, or before the beginning, of the intended buffer.
Link | Tags |
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https://security.freebsd.org/advisories/FreeBSD-SA-18:14.bhyve.asc | mitigation patch vendor advisory |
http://www.securityfocus.com/bid/106210 | vdb entry third party advisory |