Ethercat Zeek Plugin fixes critical vulnerabilities

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[TLP:CLEAR] Ethercat Zeek Plugin fixes critical vulnerabilities

CISA recommends updating Industrial Control Systems Network Protocol Parsers (ICSNPP) - Ethercat Zeek Plugin, which was fixed in commit 3bca34c (from 30.10.2023) and later.

Ethercat Zeek Plugin - out-of-bounds read (CVE-2023-7242)

CVSS 8.2 (High)

An unauthenticated remote attacker can crash the Zeek process and cause leakage of some information in memory when a specific Ethercat packet is parsed [1].

CVSS: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

More information:

CVE-2023-7242 at cve.org, NVD
CWE-125 at cwe.mitre.org

The vulnerability was publicly disclosed 20. 2. 2024.

Ethercat Zeek Plugin - out-of-bounds write (CVE-2023-7243)

CVSS 9.8 (Critical)

An unauthenticated remote attacker can execute arbitrary code when specific Ethercat datagrams are parsed [1].

CVSS: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

More information:

CVE-2023-7243 at cve.org, NVD
CWE-787 at cwe.mitre.org

The vulnerability was publicly disclosed 20. 2. 2024.

Ethercat Zeek Plugin - out-of-bounds write (CVE-2023-7244)

CVSS 9.8 (Critical)

An unauthenticated remote attacker can execute arbitrary code due to an out-of-bounds write in the primary Ethercat communication packet parsing function [1].

CVSS: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

More information:

CVE-2023-7244 at cve.org, NVD
CWE-787 at cwe.mitre.org

The vulnerability was publicly disclosed 20. 2. 2024.

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[TLP:CLEAR] Ethercat Zeek Plugin fixes critical vulnerabilities

Ethercat Zeek Plugin - out-of-bounds read (CVE-2023-7242)

CVSS 8.2 (High)

Ethercat Zeek Plugin - out-of-bounds write (CVE-2023-7243)

CVSS 9.8 (Critical)

Ethercat Zeek Plugin - out-of-bounds write (CVE-2023-7244)

CVSS 9.8 (Critical)

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