Detections
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FreeBSD : zeek -- potential DoS vulnerabilities (0d8b1126-0864-4934-b63f-c713526ead32)

high Nessus Plugin ID 309045

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 0d8b1126-0864-4934-b63f-c713526ead32 advisory.

 Tim Wojtulewicz of Corelight reports:
 A series of DNS messages containing long DNS compression chains can cause Zeek to spend a long time processing packets and potentially crash. Due to the fact that these packets can be received from remote hosts, this is a DoS risk.
 A specially-crafted LDAP search request can cause Zeek to spend a long time processing the packet, resulting in Zeek silently dropping the LDAP analyzer for the connection.
 Due to the fact that these packets can be received from remote hosts, this is an evasion risk.
 A specially-crafted series of ASN.1 messages in LDAP packets can cause Zeek to spend a long time processing the packets, resulting in Zeek silently dropping the LDAP analyzer for the connection. Due to the fact that these packets can be received from remote hosts, this is an evasion risk.

Tenable has extracted the preceding description block directly from the FreeBSD security advisory.

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/v8.0.7

http://www.nessus.org/u?8eecfe49

Plugin Details

Severity: High

ID: 309045

File Name: freebsd_pkg_0d8b112608644934b63fc713526ead32.nasl

Version: 1.1

Type: Local

Published: 4/21/2026

Updated: 4/21/2026

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: 4/20/2026

Vulnerability Publication Date: 4/20/2026