Multiple vulnerabilities in FATEK Automation WinProladder



Published: 2021-10-08 | Updated: 2021-10-14
Risk High
Patch available NO
Number of vulnerabilities 7
CVE-ID CVE-2021-38438
CVE-2021-38426
CVE-2021-38434
CVE-2021-38430
CVE-2021-38436
CVE-2021-38442
CVE-2021-38440
CWE-ID CWE-416
CWE-787
CWE-194
CWE-121
CWE-119
CWE-125
Exploitation vector Network
Public exploit N/A
Vulnerable software
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PLC WinProladder
Other software / Other software solutions

Vendor Fatek

Security Bulletin

This security bulletin contains information about 7 vulnerabilities.

1) Use-after-free

EUVDB-ID: #VU57140

Risk: High

CVSSv3.1: 8.1 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:U/RC:C]

CVE-ID: CVE-2021-38438

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error when processing PDW files. A remote attacker can trick a victim to open a specially crafted project file and execute arbitrary code on the target system.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Mitigation

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

Vulnerable software versions

PLC WinProladder: 3.30

CPE2.3 External links

http://ics-cert.us-cert.gov/advisories/icsa-21-280-06
http://www.zerodayinitiative.com/advisories/ZDI-21-1170/

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) Out-of-bounds write

EUVDB-ID: #VU57141

Risk: High

CVSSv3.1: 8.1 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:U/RC:C]

CVE-ID: CVE-2021-38426

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 parsing project files. A remote attacker can create a specially crafted PDW file, trick the victim into opening it using the affected software, 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

CPE2.3 External links

http://ics-cert.us-cert.gov/advisories/icsa-21-280-06
http://www.zerodayinitiative.com/advisories/ZDI-21-1169/

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.

3) Unexpected Sign Extension

EUVDB-ID: #VU57142

Risk: High

CVSSv3.1: 8.1 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:U/RC:C]

CVE-ID: CVE-2021-38434

CWE-ID: CWE-194 - Unexpected Sign Extension

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to unexpected sign extension when parsing project files. A remote attacker can trick a victim to open a specially crafted PDW file 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

CPE2.3 External links

http://ics-cert.us-cert.gov/advisories/icsa-21-280-06
http://www.zerodayinitiative.com/advisories/ZDI-21-1168/

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.

4) Stack-based buffer overflow

EUVDB-ID: #VU57143

Risk: High

CVSSv3.1: 8.1 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:U/RC:C]

CVE-ID: CVE-2021-38430

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 parsing project files. A remote unauthenticated attacker can trick a victim to open a specially crafted PDW 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

CPE2.3 External links

http://ics-cert.us-cert.gov/advisories/icsa-21-280-06
http://www.zerodayinitiative.com/advisories/ZDI-21-1165/

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.

5) Buffer overflow

EUVDB-ID: #VU57144

Risk: High

CVSSv3.1: 8.1 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:U/RC:C]

CVE-ID: CVE-2021-38436

CWE-ID: CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer

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 parsing project files. A remote attacker can create a specially crafted 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.

Mitigation

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

Vulnerable software versions

PLC WinProladder: 3.30

CPE2.3 External links

http://ics-cert.us-cert.gov/advisories/icsa-21-280-06

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.

6) Buffer overflow

EUVDB-ID: #VU57145

Risk: High

CVSSv3.1: 8.1 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:U/RC:C]

CVE-ID: CVE-2021-38442

CWE-ID: CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer

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 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.

Mitigation

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

Vulnerable software versions

PLC WinProladder: 3.30

CPE2.3 External links

http://ics-cert.us-cert.gov/advisories/icsa-21-280-06
http://www.zerodayinitiative.com/advisories/ZDI-21-1178/
http://www.zerodayinitiative.com/advisories/ZDI-21-1177/
http://www.zerodayinitiative.com/advisories/ZDI-21-1176/
http://www.zerodayinitiative.com/advisories/ZDI-21-1175/
http://www.zerodayinitiative.com/advisories/ZDI-21-1174/
http://www.zerodayinitiative.com/advisories/ZDI-21-1173/
http://www.zerodayinitiative.com/advisories/ZDI-21-1172/
http://www.zerodayinitiative.com/advisories/ZDI-21-1167/
http://www.zerodayinitiative.com/advisories/ZDI-21-1166/

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.

7) Out-of-bounds read

EUVDB-ID: #VU57146

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 - Out-of-bounds Read

Exploit availability: No

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

CPE2.3 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.



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