PT-2020-18912 · Allen Bradley · Flex Io 1794-Aent/B

Jared Rittle · Published 2020-10-19 · Updated 2022-07-29 · CVE-2020-6084

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Allen-Bradley Flex IO 1794-AENT/B version 4.003

Description A denial of service issue exists in the ENIP Request Path Logical Segment functionality. This can be triggered by a specially crafted network request, specifically by sending an Electronic Key Segment with less bytes than required by the Key Format Table, causing a loss of communications with the device.

Recommendations For version 4.003, consider restricting access to the ENIP Request Path Logical Segment functionality until a patch is available. As a temporary workaround, monitor network traffic for malicious packets that may trigger this issue.

Exploit

Fix

Buffer Overflow

Weakness Enumeration

CWE-120

Related Identifiers

CVE-2020-6084

Affected Products

Flex Io 1794-Aent/B

References · 3

• 🔥 https://talosintelligence.com/vulnerability_reports/TALOS-2020-1006 · Exploit
• https://osv.dev/vulnerability/CVE-2020-6084 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-6084 · Security Note