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FreeBSD : zeek -- potential DoS vulnerabilities (7a425536-74f7-4ce4-9768-0079a9d44d11)

high Nessus Plugin ID 171743

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Synopsis

The remote FreeBSD host is missing one or more security-related updates.

Description

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the 7a425536-74f7-4ce4-9768-0079a9d44d11 advisory.

 - Tim Wojtulewicz of Corelight reports: Receiving DNS responses from async DNS requests (via the lookup_addr, etc BIF methods) with the TTL set to zero could cause the DNS manager to eventually stop being able to make new requests. Specially-crafted FTP packets with excessively long usernames, passwords, or other fields could cause log writes to use large amounts of disk space.
 The find_all and find_all_ordered BIF methods could take extremely large amounts of time to process incoming data depending on the size of the input.
 (7a425536-74f7-4ce4-9768-0079a9d44d11)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://github.com/zeek/zeek/releases/tag/v5.0.7

http://www.nessus.org/u?556bb2cb

Plugin Details

Severity: High

ID: 171743

File Name: freebsd_pkg_7a42553674f74ce497680079a9d44d11.nasl

Version: 1.0

Type: local

Published: 2/21/2023

Updated: 2/21/2023

Supported Sensors: Nessus

Vulnerability Information

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

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

Exploit Ease: No known exploits are available

Patch Publication Date: 2/21/2023

Vulnerability Publication Date: 2/21/2023