Remote code execution in Rockwell Automation Allen-Bradley MicroLogix 1400 Controllers



Risk High
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2017-16740
CWE-ID CWE-121
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Allen-Bradley MicroLogix 1400
Hardware solutions / Office equipment, IP-phones, print servers

Vendor Rockwell Automation

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) Stack-based buffer overflow

EUVDB-ID: #VU9919

Risk: High

CVSSv3.1: 8.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-16740

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 weakness exists due to stack-based buffer overflow. A remote attacker can trigger memory corruption, cause the service to crash or execute arbitrary code with elevated privileges.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation

Update to the latest version of available firmware, FRN 21.003.

Vulnerable software versions

Allen-Bradley MicroLogix 1400: 1766-L32BXBA - 1766-L32AWA

CPE2.3 External links

http://ics-cert.us-cert.gov/advisories/ICSA-18-009-01


Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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



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