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

Cameron Whitehead · Published 2024-02-20 · Updated 2024-03-12 · CVE-2023-7243

Positive Technologies (AI Summary)

CVSS v2.0

10

Critical

Base vector

AV:N/AC:L/Au:N/C:C/I:C/A:C

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 attacker to cause arbitrary code execution. This is a critical issue that may be exploited by a remote attacker.

Recommendations For Industrial Control Systems Network Protocol Parsers (ICSNPP) - Ethercat Zeek Plugin versions d78dda6 and prior, consider disabling the vulnerable Zeek plugin until a patch is available to prevent arbitrary code execution. Restrict access to the Ethercat datagram analysis functionality to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

BDU:2024-02051

CVE-2023-7243

Affected Products

Icsnpp - Ethercat Zeek Plugin

References · 11

• https://cisa.gov/news-events/ics-advisories/icsa-24-051-02 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-7243 · Security Note
• https://bdu.fstec.ru/vul/2024-02051 · Security Note
• https://osv.dev/vulnerability/CVE-2023-7243 · Vendor Advisory
• https://github.com/cisagov/icsnpp-ethercat · Note
• https://t.me/cvenotify/73289 · Telegram Post
• https://t.me/true_secator/5502 · Telegram Post
• https://twitter.com/cracbot/status/1764024207824797982 · Twitter Post
• https://twitter.com/XynikIT/status/1764989025226461507 · Twitter Post
• https://t.me/cvenotify/72823 · Telegram Post
• https://twitter.com/Action1corp/status/1767606370793042160 · Twitter Post