CVE-2020-25176 Explained : Impact and Mitigation
Critical CVE-2020-25176 in Rockwell Automation's ISaGRAF Runtime allows remote code execution. Learn about impacts, affected versions, and mitigation steps.
Rockwell Automation ISaGRAF5 Runtime Relative Path Traversal vulnerability allows remote attackers to execute arbitrary code.
Understanding CVE-2020-25176
This CVE involves a critical vulnerability in Rockwell Automation's ISaGRAF Runtime Versions 4.x and 5.x.
What is CVE-2020-25176?
Some commands in the ISaGRAF Runtime IXL protocol can be exploited by remote, unauthenticated attackers to execute file operations, potentially leading to remote code execution.
The Impact of CVE-2020-25176
- CVSS Base Score: 9.1 (Critical)
- Attack Vector: Network
- Confidentiality Impact: High
- Integrity Impact: High
- Availability Impact: High
- Privileges Required: High
- Scope: Changed
Technical Details of CVE-2020-25176
This section provides detailed technical information about the vulnerability.
Vulnerability Description
The vulnerability arises from unchecked parameters in file operations, enabling directory traversal and potential remote code execution.
Affected Systems and Versions
- Product: ISaGRAF Runtime
- Vendor: Rockwell Automation
- Affected Versions: 4.x, 5.x
Exploitation Mechanism
Attackers can exploit the IXL protocol commands to traverse directories and execute malicious code remotely.
Mitigation and Prevention
Effective measures to mitigate the CVE-2020-25176 vulnerability.
Immediate Steps to Take
- Update to ISaGRAF Runtime 5 Version 5.72.00
- Restrict or block access on TCP 1131 and TCP 1132
- Follow least-privilege user principle
Long-Term Security Practices
- Implement proper network segmentation and security controls
- Minimize network exposure for control system devices
- Deploy firewalls and isolate control systems
- Refer to CPwE Design Guide for best practices
- Use network infrastructure controls like firewalls and VPN
- Enforce least-privilege user principle
Patching and Updates
- Apply provided mitigations to affected products
- Combine guidance with general security practices
- Consult Rockwell Automation, Schneider Electric, Xylem, or GE for additional mitigation information.