CVE-2020-6988
published 2020-03-16CVE-2020-6988: Rockwell Automation MicroLogix 1400 Controllers Series B v21.001 and prior, Series A, all versions, MicroLogix 1100 Controller, all versions, RSLogix 500…
PriorityP353high7.5CVSS 3.1
AVNACLPRNUINSUCHINAN
EPSS
3.89%
88.9th percentile
Rockwell Automation MicroLogix 1400 Controllers Series B v21.001 and prior, Series A, all versions, MicroLogix 1100 Controller, all versions, RSLogix 500 Software v12.001 and prior, A remote, unauthenticated attacker can send a request from the RSLogix 500 software to the victim’s MicroLogix controller. The controller will then respond to the client with used password values to authenticate the user on the client-side. This method of authentication may allow an attacker to bypass authentication altogether, disclose sensitive information, or leak credentials.
Affected
2 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| rockwellautomation | micrologix_1400_b_firmware | <= 21.001 | — |
| rockwellautomation | rslogix_500 | <= 12.001 | — |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
nvdv2.05.0MEDIUMAV:N/AC:L/Au:N/C:P/I:N/A:N
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GHSA
GHSA-8v4g-559x-qqxm: Rockwell Automation MicroLogix 1400 Controllers Series B v21
ghsa_unreviewed·2022-05-24
CVE-2020-6988 [MEDIUM] GHSA-8v4g-559x-qqxm: Rockwell Automation MicroLogix 1400 Controllers Series B v21
Rockwell Automation MicroLogix 1400 Controllers Series B v21.001 and prior, Series A, all versions, MicroLogix 1100 Controller, all versions, RSLogix 500 Software v12.001 and prior, A remote, unauthenticated attacker can send a request from the RSLogix 500 software to the victim’s MicroLogix controller. The controller will then respond to the client with used password values to authenticate the user on the client-side. This method of authentication may allow an attacker to bypass authentication altogether, disclose sensitive information, or leak credentials.
CISA ICS
Rockwell Automation MicroLogix Controllers and RSLogix 500 Software
cisa_ics·2020-03-10·CVSS 9.8
[CRITICAL] Rockwell Automation MicroLogix Controllers and RSLogix 500 Software
## Archived Content In an effort to keep CISA.gov current, the archive contains outdated information that may not reflect current policy or programs.
ICS Advisory
##
Rockwell Automation MicroLogix Controllers and RSLogix 500 Software
Last RevisedMarch 10, 2020
Alert CodeICSA-20-070-06
## 1. EXECUTIVE SUMMARY
- CVSS v3 9.8
- ATTENTION: Exploitable remotely/low skill level to exploit
- Vendor: Rockwell Automation
- Equipment: MicroLogix 1400 Controllers, MicroLogix 1100 Controllers, and RSLogix 500 Software
- Vulnerabilities: Use of Hard-coded Cryptographic Key, Use of a Broken or Risky Algorithm for Password Protection, Use of Client-Side Authentication, Cleartext Storage of Sensitive Information
## 2. RISK EVALUATION
Successful exploit
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2020-03-16
Published