PT-2020-5521 · Rockwell Automation · Factorytalk Linx

Published 2020-12-29 · Updated 2020-12-30 · CVE-2020-5801

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 FactoryTalk Linx (affected versions not specified)

Description The issue is related to the CFTLDManager::HandleRequest function in RnaDaSvr.dll, which can be triggered by an attacker sending an OpenNamespace message to port 4241 with a valid session-id. This results in an unhandled exception, causing process termination. The problem is associated with inadequate handling of exceptional states.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Improper Handling of Exceptional Conditions

Weakness Enumeration

CWE-755

Related Identifiers

BDU:2021-01033

CVE-2020-5801

Affected Products

Factorytalk Linx

References · 8

• https://nvd.nist.gov/vuln/detail/CVE-2020-5801 · Security Note
• https://osv.dev/vulnerability/CVE-2020-5801 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-01033 · Security Note
• https://t.me/cibsecurity/21384 · Telegram Post
• https://cybersecurity-help.cz/vdb/SB2020122808 · Note
• https://tenable.com/security/research/tra-2020-71 · Note
• https://us-cert.gov/ics/advisories/icsa-21-028-01 · Note
• https://t.me/cvenotify/7882 · Telegram Post