Buffer overflow in PLC WinProladder - CVE-2021-38442
Published: October 8, 2021 / Updated: October 14, 2021
Vulnerability identifier: #VU57145
CSH Severity: High
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-38442
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error when parsing project files. A remote attacker can create a specially crafted PDW or PLC file, trick the victim into opening it, trigger memory corruption and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Affected software
PLC WinProladder
How to mitigate CVE-2021-38442
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.
External References
- https://ics-cert.us-cert.gov/advisories/icsa-21-280-06
- https://www.zerodayinitiative.com/advisories/ZDI-21-1178/
- https://www.zerodayinitiative.com/advisories/ZDI-21-1177/
- https://www.zerodayinitiative.com/advisories/ZDI-21-1176/
- https://www.zerodayinitiative.com/advisories/ZDI-21-1175/
- https://www.zerodayinitiative.com/advisories/ZDI-21-1174/
- https://www.zerodayinitiative.com/advisories/ZDI-21-1173/
- https://www.zerodayinitiative.com/advisories/ZDI-21-1172/
- https://www.zerodayinitiative.com/advisories/ZDI-21-1167/
- https://www.zerodayinitiative.com/advisories/ZDI-21-1166/