Summary
Successful exploitation of this vulnerability can lead to a denial of service, where the application will become unresponsive and will not recover on its own.
The following versions of RSLinx Classic Third-Party Vulnerability are affected:
- RSLinx Classic <=4.50.00 (CVE-2020-13573)
| CVSS | Vendor | Equipment | Vulnerabilities |
|---|---|---|---|
| v3 7.5 | Rockwell Automation | RSLinx Classic Third-Party Vulnerability | Out-of-bounds Read |
Background
- Critical Infrastructure Sectors: Critical Manufacturing, Energy, Food and Agriculture, Water and Wastewater
- Countries/Areas Deployed: Worldwide
- Company Headquarters Location: United States
Vulnerabilities
CVE-2020-13573
The affected product is vulnerable to a stack-based buffer overflow, which may allow an attacker to remotely execute arbitrary code.
Affected Products
RSLinx Classic Third-Party Vulnerability
Rockwell Automation
Rockwell Automation RSLinx Classic: <=4.50.00
known_affected
Remediations
Mitigation
Rockwell Automation recommends that customers using the affected software should upgrade to version 4.60.00 or later. Customers who are not able to upgrade to one of the corrected versions, should consider applying the available patch (BF31213) for their current version or applying the recommended security best practices.
https://www.rockwellautomation.com/en-us/trust-center/security-advisories/advisory.SD1774.html
Relevant CWE: CWE-125 Out-of-bounds Read
Metrics
| CVSS Version | Base Score | Base Severity | Vector String |
|---|---|---|---|
| 3.1 | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| 4.0 | 8.7 | HIGH | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N |
Acknowledgments
- Rockwell Automation reported this vulnerability to CISA
Legal Notice and Terms of Use
This product is provided subject to this Notification (https://www.cisa.gov/notification) and this Privacy & Use policy (https://www.cisa.gov/privacy-policy).
Recommended Practices
CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability.
Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet.
Locate control system networks and remote devices behind firewalls and isolating them from business networks.
When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize VPN is only as secure as the connected devices.
CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.
CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov/ics. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies
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