#VU57146 Out-of-bounds read in PLC WinProladder


Published: 2021-10-08 | Updated: 2021-10-14

Vulnerability identifier: #VU57146

Vulnerability risk: Medium

CVSSv3.1: 4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:U/RC:C]

CVE-ID: CVE-2021-38440

CWE-ID: CWE-125

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
PLC WinProladder
Other software / Other software solutions

Vendor: Fatek

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition when processing PDW files. A remote attacker can trigger out-of-bounds read error and read contents of memory on the system.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

PLC WinProladder: 3.30


External links
http://ics-cert.us-cert.gov/advisories/icsa-21-280-06
http://www.zerodayinitiative.com/advisories/ZDI-21-1171/


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.


Latest bulletins with this vulnerability