PT-2021-4661 · Fatek · Fatek Automation Communication Server

Nattisamson · Published 2021-06-11 · Updated 2021-10-20 · CVE-2021-38432

Positive Technologies (AI Summary)

CVSS v3.1

10

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions FATEK Automation Communication Server versions 1.13 and prior

Description The issue is related to a stack-based buffer overflow condition due to the lack of proper validation of user-supplied data. This could allow an attacker to remotely execute code by sending specially crafted requests, potentially resulting in remote code execution or denial of service.

Recommendations For versions 1.13 and prior, update to a version that properly validates user-supplied data to prevent stack-based buffer overflow conditions. As a temporary workaround, consider restricting access to the server to minimize the risk of exploitation until a patch is available.

Fix

Stack Overflow

Weakness Enumeration

CWE-121

Related Identifiers

BDU:2021-05354

CVE-2021-38432

ZDI-21-1164

Affected Products

Fatek Automation Communication Server

References · 8

• https://zerodayinitiative.com/advisories/ZDI-21-1164 · Security Note
• https://osv.dev/vulnerability/CVE-2021-38432 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-38432 · Security Note
• https://bdu.fstec.ru/vul/2021-05354 · Security Note
• https://cybersecurity-help.cz/vdb/SB2021100804 · Note
• https://t.me/cibsecurity/30642 · Telegram Post
• https://vuldb.com/?id.184475 · Note
• https://us-cert.cisa.gov/ics/advisories/icsa-21-280-07 · Note