FreeBSD : zeek -- multiple vulnerabilities (e6a17802-cda9-4f53-8870-b629e4ac3d40)

high Nessus Plugin ID 338234

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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 e6a17802-cda9-4f53-8870-b629e4ac3d40 advisory.

Tim Wojtulewicz of Corelight reports:
HIGH: SMB: Chains of AndX messages can crash Zeek HIGH: DNP3: Memory exhaustion via file control (g70v1) fields HIGH: SIP: Memory exhaustion from long request/response paths HIGH: DHCP: Memory exhaustion from retained options after analyzer violation HIGH: SMTP: Memory exhaustion from large numbers of rcptto/to/cc/path entries HIGH: SMB: DCE/RPC memory exhaustion from fragment state HIGH: Analyzer manager: Equivalent scheduled analyzers could exhaust memory HIGH: ZIP: Unbounded decompression HIGH: Redis: Parsed Redis traffic memory exhaustion

HIGH: Invalid IPv6 fragments can lead to unbounded state growth HIGH: SSH: Quadratic KEX algorithm CPU exhaustion

HIGH: NVT: Oversized line recovery writes before heap buffer HIGH: DHCP: Unbounded state growth via join_data HIGH: FTP: Unbounded state growth via ftp_data_expected

HIGH: OCSP: Empty byName responder ID crashes Zeek HIGH: ARP: Tunneled ARP traffic crashes Zeek HIGH: LDAP: Unbounded per-connection script state HIGH: IRC DCC SEND has unbounded state growth HIGH: tunnel_changed event limit bypass on direct/tunneled toggles HIGH: Recursive stack exhaustion from deep packet analyzer chains MEDIUM: Telnet: AUTH STATUS options before a NAME is received results in event argument mismatch MEDIUM: UDP: udp_contents events could trigger out-of-bounds reads MEDIUM: NetBIOS: Memory exhaustion from declared session lengths MEDIUM: IRC: Single DCC Send packet can result in scripting error MEDIUM: IRC: Invalid DCC Send host/port fields can lead to unexpected parsing results

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.

Plugin Details

Severity: High

ID: 338234

File Name: freebsd_pkg_e6a17802cda94f538870b629e4ac3d40.nasl

Version: 1.1

Type: Local

Family: FreeBSD Local Security Checks

Published: 8/20/2026

Updated: 8/20/2026

Supported Sensors: Nessus

Vulnerability Information

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

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

Exploit Ease: No known exploits are available

Patch Publication Date: 8/19/2026

Vulnerability Publication Date: 8/19/2026

Detections

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