PT-2021-4458 · Fatek Automation · Winproladder

Natnael Samson + 2 · Published 2021-10-14 · Updated 2021-10-21 · CVE-2021-38434

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions FATEK Automation WinProladder versions 3.30 and prior

Description The issue is related to improper validation of user-supplied data when parsing project files, which could result in an unexpected sign extension. This could allow a remote attacker to execute arbitrary code by having a user open a specially crafted malicious file.

Recommendations For versions 3.30 and prior, update to a version that properly validates user-supplied data to prevent unexpected sign extension and arbitrary code execution. As a temporary workaround, consider restricting the opening of project files from untrusted sources to minimize the risk of exploitation.

Fix

Weakness Enumeration

CWE-194

Related Identifiers

BDU:2021-05091

CVE-2021-38434

ZDI-21-1168

Affected Products

Winproladder

References · 8

• https://safe-surf.ru/upload/VULN/VULN-20211012.2.pdf · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-38434 · Security Note
• https://bdu.fstec.ru/vul/2021-05091 · Security Note
• https://osv.dev/vulnerability/CVE-2021-38434 · Vendor Advisory
• https://zerodayinitiative.com/advisories/ZDI-21-1168 · Security Note
• https://cybersecurity-help.cz/vdb/SB2021100805 · Note
• https://us-cert.cisa.gov/ics/advisories/icsa-21-280-06 · Note
• https://t.me/cibsecurity/30682 · Telegram Post