CVEs-PoC/2021/CVE-2021-34593.md

CVE-2021-34593

Description

In CODESYS V2 Runtime Toolkit 32 Bit full and PLCWinNT prior to versions V2.4.7.56 unauthenticated crafted invalid requests may result in several denial-of-service conditions. Running PLC programs may be stopped, memory may be leaked, or further communication clients may be blocked from accessing the PLC.

POC

Reference

• http://packetstormsecurity.com/files/164716/CODESYS-2.4.7.0-Denial-Of-Service.html
• http://packetstormsecurity.com/files/165874/WAGO-750-8xxx-PLC-Denial-Of-Service-User-Enumeration.html
• http://seclists.org/fulldisclosure/2021/Oct/64

Github

• https://github.com/ARPSyndicate/cvemon