FreeBSD: VID-F56669F5-D799-4FF5-9174-64A6D571C451: bro -- Null pointer dereference and Signed integer overflow
Description
Jon Siwek of Corelight reports:
This is a security patch release to address potential
Denial of Service vulnerabilities:
Null pointer dereference in the RPC analysis code. RPC
analyzers (e.g. MOUNT or NFS) are not enabled in the
default configuration.
Signed integer overflow in BinPAC-generated parser code.
The result of this is Undefined Behavior with respect to
the array bounds checking conditions that BinPAC generates,
so it's unpredictable what an optimizing compiler may
actually do under the assumption that signed integer
overlows should never happen. The specific symptom which
lead to finding this issue was with the PE analyzer causing
out-of-memory crashes due to large allocations that were
otherwise prevented when the array bounds checking logic
was changed to prevent any possible signed integer overlow.
Solution(s)
- freebsd-upgrade-package-bro
- Lightweight Endpoint Agent
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- Cloud, Virtual, and Container Assessment
- Integrated Threat Feeds
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