PT-2024-2175 · Zeek · Zeek Plugin

Name of the Vulnerable Software and Affected Versions: Zeek Plugin versions d78dda6 and prior Description: The issue is related to an out-of-bounds read during the analysis of a specific Ethercat packet, which could allow an attacker to crash the Zeek process and leak some information in memory...

PT-2024-2142 · Zeek · Icsnpp - Ethercat Zeek Plugin

Name of the Vulnerable Software and Affected Versions: Industrial Control Systems Network Protocol Parsers ICSNPP - Ethercat Zeek Plugin versions d78dda6 and prior Description: The issue is related to an out-of-bounds write while analyzing specific Ethercat datagrams, which could allow an attacke...

PT-2024-2141 · Zeek · Icsnpp - Ethercat Zeek Plugin

Name of the Vulnerable Software and Affected Versions: Industrial Control Systems Network Protocol Parsers ICSNPP - Ethercat Zeek Plugin versions d78dda6 and prior Description: The issue is related to an out-of-bounds write in the primary analyses function for Ethercat communication packets. This...

FreeBSD : zeek -- potential DoS vulnerability (fedf7e71-61bd-49ec-aaf0-6da14bdbb319)

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 fedf7e71-61bd-49ec-aaf0-6da14bdbb319 advisory. - Tim Wojtulewicz of Corelight reports: A specially-crafted series of packets containing nested MIME...

zeek -- potential DoS vulnerability

Tim Wojtulewicz of Corelight reports: A specially-crafted series of packets containing nested MIME entities can cause Zeek to spend large amounts of time parsing the entities...

FreeBSD : zeek -- potential DoS vulnerabilities (386a14bb-1a21-41c6-a2cf-08d79213379b)

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 386a14bb-1a21-41c6-a2cf-08d79213379b advisory. - Tim Wojtulewicz of Corelight reports: A specially-crafted SSL packet could cause Zeek to leak memory...

zeek -- potential DoS vulnerabilities

Tim Wojtulewicz of Corelight reports: A specially-crafted SSL packet could cause Zeek to leak memory and potentially crash. A specially-crafted series of FTP packets could cause Zeek to log entries for requests that have already been completed, using resources unnecessarily and potentially causin...

FreeBSD : zeek -- potential DoS vulnerabilities (8eefa87f-31f1-496d-bf8e-2b465b6e4e8a)

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 8eefa87f-31f1-496d-bf8e-2b465b6e4e8a advisory. - Tim Wojtulewicz of Corelight reports: File extraction limits were not correctly enforced for files...

zeek -- potential DoS vulnerabilities

Tim Wojtulewicz of Corelight reports: File extraction limits were not correctly enforced for files containing large amounts of missing bytes. Sessions are sometimes not cleaned up completely within Zeek during shutdown, potentially causing a crash when using the -B dpd flag for debug logging. A...

Key Network Questions

I wrote this on 7 December 2018 but never published it until today. The following are the "key network questions" which "would answer many key questions about a network, without having to access a third party log repository. This data is derived from mining Zeek log data as it is created, rather...

FreeBSD : zeek -- potential DoS vulnerabilities (1ab7357f-a3c2-406a-89fb-fd00e49a71b5)

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 1ab7357f-a3c2-406a-89fb-fd00e49a71b5 advisory. - Tim Wojtulewicz of Corelight reports: A specially-crafted series of FTP packets with a CMD command wi...

zeek -- potential DoS vulnerabilities

Tim Wojtulewicz of Corelight reports: A specially-crafted series of FTP packets with a CMD command with a large path followed by a very large number of replies could cause Zeek to spend a long time processing the data. A specially-crafted with a truncated header can cause Zeek to overflow memory...

zeek -- potential DoS vulnerabilities

Tim Wojtulewicz of Corelight reports: Receiving DNS responses from async DNS requests via A specially-crafted stream of FTP packets containing a command reply with many intermediate lines can cause Zeek to spend a large amount of time processing data. A specially-crafted set of packets containing...

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

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...

zeek -- potential DoS vulnerabilities

Tim Wojtulewicz of Corelight reports: Receiving DNS responses from async DNS requests via the lookupaddr, 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,...

FreeBSD : zeek -- potential DoS vulnerabilities (2b5fc9c4-eaca-46e0-83d0-9b10c51c4b1b)

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 2b5fc9c4-eaca-46e0-83d0-9b10c51c4b1b advisory. - Tim Wojtulewicz of Corelight reports: A missing field in the SMB FSControl script-land record could...

zeek -- potential DoS vulnerabilities

Tim Wojtulewicz of Corelight reports: A missing field in the SMB FSControl script-land record could cause a heap buffer overflow when receiving packets containing those header types. Receiving a series of packets that start with HTTP/1.0 and then switch to HTTP/0.9 could cause Zeek to spend a lar...

FreeBSD : zeek -- potential DoS vulnerabilities (658b9198-8106-4c3d-a2aa-dc4a0a7cc3b6)

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 658b9198-8106-4c3d-a2aa-dc4a0a7cc3b6 advisory. - Tim Wojtulewicz of Corelight reports: A specially-crafted series of HTTP 0.9 packets can cause Zeek t...

zeek -- potential DoS vulnerabilities

Tim Wojtulewicz of Corelight reports: A specially-crafted series of HTTP 0.9 packets can cause Zeek to spend large amounts of time processing the packets. A specially-crafted FTP packet can cause Zeek to spend large amounts of time processing the command. A specially-crafted IPv6 packet can cause...

zeek -- potential DoS vulnerabilities

Tim Wojtulewicz of Corelight reports: Fix an issue where a specially-crafted FTP packet can cause Zeek to spend large amounts of time attempting to search for valid commands in the data stream. Fix a possible overflow in the Zeek dictionary code that may lead to a memory leak. Fix an issue where ...