Multiple vulnerabilities in FATEK Automation WinProladder



| Updated: 2022-01-14
Risk High
Patch available NO
Number of vulnerabilities 2
CVE-ID CVE-2021-43554
CVE-2021-43556
CWE-ID CWE-787
CWE-121
Exploitation vector Network
Public exploit N/A
Vulnerable software
 PLC WinProladder
Other software / Other software solutions

Vendor Fatek

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Out-of-bounds write

EUVDB-ID: #VU58238

Risk: High

CVSSv4.0: 6.1 [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/E:U/U:Amber]

CVE-ID: CVE-2021-43554

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error when processing project files. A remote attacker can trick the victim to open a specially crafted PDW file, trigger out-of-bounds write and execute arbitrary code on the target system.

Mitigation

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

Vulnerable software versions

PLC WinProladder: 3.30_24518

CPE2.3 External links

https://ics-cert.us-cert.gov/advisories/icsa-21-320-01
https://www.zerodayinitiative.com/advisories/ZDI-22-028/
https://www.zerodayinitiative.com/advisories/ZDI-22-030/
https://www.zerodayinitiative.com/advisories/ZDI-22-033/


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.

2) Stack-based buffer overflow

EUVDB-ID: #VU58239

Risk: High

CVSSv4.0: 6.1 [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/E:U/U:Amber]

CVE-ID: CVE-2021-43556

CWE-ID: CWE-121 - Stack-based buffer overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when processing project files. A remote attacker can trick the victim to open a specially crafted PDW, SPF or TAB file, trigger stack-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

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

Vulnerable software versions

PLC WinProladder: 3.30_24518

CPE2.3 External links

https://ics-cert.us-cert.gov/advisories/icsa-21-320-01
https://www.zerodayinitiative.com/advisories/ZDI-22-029/
https://www.zerodayinitiative.com/advisories/ZDI-22-031/
https://www.zerodayinitiative.com/advisories/ZDI-22-032/


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.



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