CVE-2020-7931 Explained : Impact and Mitigation
Learn about CVE-2020-7931 affecting JFrog Artifactory 5.x and 6.x, allowing remote code execution. Find out how to mitigate this vulnerability and apply necessary patches.
JFrog Artifactory 5.x and 6.x are affected by an insecure FreeMarker template processing vulnerability that can lead to remote code execution. Patches are available for versions between 5.11.8 and 6.16.0.
Understanding CVE-2020-7931
This CVE involves a security issue in JFrog Artifactory versions 5.x and 6.x related to FreeMarker template processing.
What is CVE-2020-7931?
In JFrog Artifactory 5.x and 6.x, insecure FreeMarker template processing allows remote code execution, such as modifying a .ssh/authorized_keys file. The vulnerability arises from the use of the DefaultObjectWrapper class, which exposes certain Java functions to a template.
The Impact of CVE-2020-7931
The vulnerability can be exploited to execute arbitrary code remotely, potentially leading to unauthorized access and control over the affected system.
Technical Details of CVE-2020-7931
This section provides more technical insights into the CVE.
Vulnerability Description
The insecure FreeMarker template processing in JFrog Artifactory versions 5.x and 6.x enables remote code execution by leveraging the DefaultObjectWrapper class.
Affected Systems and Versions
- JFrog Artifactory 5.x and 6.x
- Versions between 5.11.8 and 6.16.0
Exploitation Mechanism
The vulnerability allows attackers to manipulate FreeMarker templates to execute malicious code, potentially compromising the target system.
Mitigation and Prevention
Protecting systems from CVE-2020-7931 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply the available patches for JFrog Artifactory versions between 5.11.8 and 6.16.0.
- Monitor for any unauthorized changes to critical files, especially .ssh/authorized_keys.
Long-Term Security Practices
- Regularly update and patch software to address known vulnerabilities.
- Implement proper access controls and least privilege principles to limit the impact of potential security breaches.
Patching and Updates
Ensure that all systems running JFrog Artifactory are updated with the latest patches to mitigate the risk of exploitation.