PT-2021-5055 · Wecon · Wecon Plc Editor

Nattisamson · Published 2021-11-11 · Updated 2021-11-23 · CVE-2021-42705

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 Wecon PLC Editor versions 1.3.8 and prior

Description The issue is related to a stack-based buffer overflow that occurs while processing project files, potentially allowing an attacker to execute arbitrary code. This is a result of the software's inability to properly handle certain file types, leading to a buffer overflow in the stack. The exploitation of this issue may enable an attacker to run arbitrary code, posing a significant security risk.

Recommendations For Wecon PLC Editor versions 1.3.8 and prior, at the moment, there is no information about a newer version that contains a fix for this vulnerability.

Stack Overflow

Weakness Enumeration

CWE-121

Related Identifiers

BDU:2021-05827

CVE-2021-42705

ZDI-21-1321

Affected Products

Wecon Plc Editor

References · 6

• https://nvd.nist.gov/vuln/detail/CVE-2021-42705 · Security Note
• https://osv.dev/vulnerability/CVE-2021-42705 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-05827 · Security Note
• https://zerodayinitiative.com/advisories/ZDI-21-1321 · Security Note
• https://us-cert.cisa.gov/ics/advisories/icsa-21-315-01 · Note
• https://t.me/cibsecurity/32816 · Telegram Post