PT-2021-5075 · Fatek · Winproladder

Xina1I · Published 2021-11-16 · Updated 2022-04-01 · CVE-2021-43556

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 WinProladder versions 3.30 24518 and prior

Description The issue is related to a stack-based buffer overflow that occurs while processing project files, which may allow an attacker to execute arbitrary code. This can be exploited by an attacker to gain unauthorized access and control.

Recommendations For versions 3.30 24518 and prior, consider avoiding the use of project files from untrusted sources until a patch is available. As a temporary workaround, restrict access to the project file processing 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.

Stack Overflow

Memory Corruption

Weakness Enumeration

CWE-121

CWE-787

Related Identifiers

BDU:2021-05855

CVE-2021-43556

ZDI-22-029

ZDI-22-031

ZDI-22-032

Affected Products

Winproladder

References · 10

• https://zerodayinitiative.com/advisories/ZDI-22-032 · Security Note
• https://zerodayinitiative.com/advisories/ZDI-22-031 · Security Note
• https://osv.dev/vulnerability/CVE-2021-43556 · Vendor Advisory
• https://zerodayinitiative.com/advisories/ZDI-22-029 · Security Note
• https://bdu.fstec.ru/vul/2021-05855 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-43556 · Security Note
• https://securitylab.ru/vulnerability/526663.php · Note
• https://t.me/cvenotify/28286 · Telegram Post
• https://us-cert.cisa.gov/ics/advisories/icsa-21-320-01 · Note
• https://t.me/cvenotify/25095 · Telegram Post