Detections
Analytics

FreeBSD : bro -- NULL pointer dereference and Signed integer overflow (f56669f5-d799-4ff5-9174-64a6d571c451)

high Nessus Plugin ID 127555

Language:

Synopsis

The remote FreeBSD host is missing a security-related update.

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

Update the affected package.

See Also

http://www.nessus.org/u?b08c402a

http://www.nessus.org/u?12da872a

Plugin Details

Severity: High

ID: 127555

File Name: freebsd_pkg_f56669f5d7994ff5917464a6d571c451.nasl

Version: 1.1

Type: local

Published: 8/12/2019

Updated: 8/12/2019

Supported Sensors: Nessus

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:bro, cpe:/o:freebsd:freebsd

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Patch Publication Date: 8/9/2019

Vulnerability Publication Date: 6/22/2019