Insufficiently protected credentials in Rockwell Automation Logix Controllers



Risk High
Patch available NO
Number of vulnerabilities 1
CVE-ID CVE-2021-22681
CWE-ID CWE-522
Exploitation vector Network
Public exploit N/A
Vulnerable software
 RSLogix 5000
Server applications / Other server solutions

Studio 5000 Logix Designer
Client/Desktop applications / Other client software

Vendor Rockwell Automation

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) Insufficiently protected credentials

EUVDB-ID: #VU51000

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2021-22681

CWE-ID: CWE-522 - Insufficiently Protected Credentials

Exploit availability: No

Description

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

The vulnerability exists due to the affected product uses a key to verify Logix controllers are communicating with the affected Rockwell Automation products. A remote attacker can bypass this verification mechanism and authenticate with Logix controllers.

This vulnerability affects the following Rockwell Logix Controllers:

  • CompactLogix 1768
  • CompactLogix 1769
  • CompactLogix 5370
  • CompactLogix 5380
  • CompactLogix 5480
  • ControlLogix 5550
  • ControlLogix 5560
  • ControlLogix 5570
  • ControlLogix 5580
  • DriveLogix 5560
  • DriveLogix 5730
  • DriveLogix 1794-L34
  • Compact GuardLogix 5370
  • Compact GuardLogix 5380
  • GuardLogix 5570
  • GuardLogix 5580
  • SoftLogix 5800

Mitigation

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

Vulnerable software versions

RSLogix 5000: - - 20

Studio 5000 Logix Designer: - - 21

CPE2.3 External links

https://ics-cert.us-cert.gov/advisories/icsa-21-056-03
https://ics-cert.kaspersky.com/advisories/klcert-advisories/2021/03/02/klcert-17-029-authentication-bypass-in-rockwell-automation-logix-controllers
https://rockwellautomation.custhelp.com/app/answers/answer_view/a_id/1130301


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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