Zeek Files

Thank you to Peter Cullen (@pbcullen), Stefan Goetz (@stefangoetzcorelight), Jan Grashöfer (@J-Gras), Eldon Koyle (@ekoyle), Kara Zaffarano and Kyle Elliott of Trail of Bits in collaboration with OpenAI, AdaLogics in collaboration with Anthropic, and the Canadian Communications Security Establishment for their contributions to this release.

This release fixes the following security issues:

• HIGH: SMB: Chains of AndX messages can crash Zeek Advisory: GHSA-2xc9-g36m-w7jh

• HIGH: DNP3: Memory exhaustion via file control (g70v1) fields Advisory: GHSA-px95-jfxw-4jw2

• HIGH: SIP: Memory exhaustion from long request/response paths Advisory: GHSA-wjf9-326g-m9h3

• HIGH: DHCP: Memory exhaustion from retained options after analyzer violation Advisory: GHSA-hxj7-pcq9-c949

• HIGH: SMTP: Memory exhaustion from large numbers of rcptto/to/cc/path entries Advisory: GHSA-49x5-fmqq-4ccv

• HIGH: SMB: DCE/RPC memory exhaustion from fragment state Advisory: GHSA-rmc2-mqq6-wcw9

• HIGH: Analyzer manager: Equivalent scheduled analyzers could exhaust memory Advisory: GHSA-3gxr-8f49-vrgr

• HIGH: ZIP: Unbounded decompression Advisory: GHSA-2prm-q48h-m96w

• HIGH: Redis: Parsed Redis traffic memory exhaustion Advisory: GHSA-c573-w89f-fpxm

• HIGH: Invalid IPv6 fragments can lead to unbounded state growth Advisory: GHSA-84jg-cwr7-4p6w

• HIGH: SSH: Quadratic KEX algorithm CPU exhaustion Advisory: GHSA-5v93-pm35-5mq6

• HIGH: NVT: Oversized line recovery writes before heap buffer Advisory: GHSA-hww6-p5xp-6rqv

• HIGH: DHCP: Unbounded state growth via join_data Advisory: GHSA-qf53-234m-7vhq

• HIGH: FTP: Unbounded state growth via ftp_data_expected Advisory: GHSA-9m23-gwjx-p3j8

• HIGH: OCSP: Empty byName responder ID crashes Zeek Advisory: GHSA-j48p-9pm3-pgpx

• HIGH: ARP: Tunneled ARP traffic crashes Zeek Advisory: GHSA-924m-g9gv-45xc

• HIGH: LDAP: Unbounded per-connection script state Advisory: GHSA-pxc9-fc9v-r39q

• HIGH: IRC DCC SEND has unbounded state growth Advisory: GHSA-5h5v-fcxr-f223

• HIGH: tunnel_changed event limit bypass on direct/tunneled toggles Advisory: GHSA-72qh-gpq9-cj8w

• HIGH: Recursive stack exhaustion from deep packet analyzer chains Advisory: GHSA-vh6p-7vxf-m7rh

• MEDIUM: Telnet: AUTH STATUS options before a NAME is received results in event argument mismatch Advisory: GHSA-qjhc-rfmf-3vgp

• MEDIUM: UDP: udp_contents events could trigger out-of-bounds reads Advisory: GHSA-q48f-3qm2-j875

• MEDIUM: NetBIOS: Memory exhaustion from declared session lengths Advisory: GHSA-gq9q-85wf-mq48

• MEDIUM: IRC: Single DCC Send packet can result in scripting error Advisory: GHSA-6566-755c-7mwq

• MEDIUM: IRC: Invalid DCC Send host/port fields can lead to unexpected parsing results Advisory: GHSA-q6c5-95ff-cwr9

This release fixes the following bugs:

• IN_ANYWHERE is now allowed as a wildcard in Intel files for the interface field.

• The Prometheus service discovery endpoint for the telemetry framework was not rendering IPv6 addresses correctly.

• The unknown_protocols.log previously included the IP next protocol field as a 16 bit value, with the first byte value set to the next protocol followed by a zero byte due to a spurious use of htons(). This has been fixed to be just the next protocol byte.

• Fixed file descriptors of the WebSocket server and WebSocket client connections (Cluster::listen_websocket()) being inherited by child processes. E.g., when using system() in Zeek scripts or the Input Framework's raw reader functionality.