CVE-2020-12149 : Exploit Details and Defense Strategies
Discover the impact of CVE-2020-12149, an OS command injection vulnerability in Silver Peak ECOS software. Learn about affected versions, mitigation steps, and prevention measures.
Silver Peak Systems, Inc. identified a vulnerability in the ECOS software that could allow an attacker to inject OS commands through the configuration backup/restore function. This CVE affects various versions of ECOS prior to 8.1.9.15, 8.3.0.8, 8.3.1.2, 8.3.2.0, 9.0.2.0, and 9.1.0.0.
Understanding CVE-2020-12149
This CVE involves an OS command injection vulnerability in the management file upload process of Silver Peak Unity ECOSTM (ECOS) appliance software.
What is CVE-2020-12149?
The vulnerability allows an attacker to manipulate shell commands by injecting valid OS command input through the user-controlled configuration filename.
The Impact of CVE-2020-12149
- CVSS Base Score: 6.8 (Medium Severity)
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: High
- User Interaction: Required
- Confidentiality Impact: High
- Integrity Impact: High
- Availability Impact: High
Technical Details of CVE-2020-12149
This section provides detailed technical information about the vulnerability.
Vulnerability Description
The configuration backup/restore function in ECOS directly incorporates the user-controlled config filename in a subsequent shell command, enabling an attacker to inject OS commands.
Affected Systems and Versions
- All current ECOS versions prior to 8.1.9.15
- Version 8.3.0.8
- Version 8.3.1.2
- Version 8.3.2.0
- Version 9.0.2.0
- Version 9.1.0.0
Exploitation Mechanism
The vulnerability can be exploited by an attacker with authenticated access to the Orchestrator UI or EdgeConnect UI.
Mitigation and Prevention
To address CVE-2020-12149, follow these mitigation steps:
Immediate Steps to Take
- Update to the patched versions of ECOS software.
- Ensure that the backup/restore functions only accept alphanumeric characters, periods, hyphens, and underscores.
Long-Term Security Practices
- Regularly monitor and update software to the latest versions.
- Implement strong authentication mechanisms to prevent unauthorized access.
Patching and Updates
- Silver Peak has modified the backup/restore functions in the patched versions of ECOS to prevent OS command injections via filenames.