CVE-2017-18037 : Vulnerability Insights and Analysis
Learn about CVE-2017-18037 affecting Atlassian Bitbucket Server, allowing unauthorized file access via path traversal. Find mitigation steps and version details.
A vulnerability has been discovered in the git repository tag rest resource of Atlassian Bitbucket Server, allowing unauthorized access and file reading through a path traversal exploit.
Understanding CVE-2017-18037
What is CVE-2017-18037?
The vulnerability in the git repository tag rest resource of Atlassian Bitbucket Server enables attackers to read arbitrary files by exploiting a path traversal vulnerability in the git tag name.
The Impact of CVE-2017-18037
This vulnerability affects Atlassian Bitbucket Server versions ranging from 3.7.0 to 5.6.0, with specific fixed versions available for each affected range.
Technical Details of CVE-2017-18037
Vulnerability Description
The vulnerability allows remote attackers to gain unauthorized access and read arbitrary files through a path traversal vulnerability in the git tag name.
Affected Systems and Versions
- Product: Bitbucket Server
- Vendor: Atlassian
- Affected Versions:
- 3.7.0 to 4.14.11
- 5.0.0 to 5.0.9
- 5.1.0 to 5.1.8
- 5.2.0 to 5.2.6
- 5.3.0 to 5.3.4
- 5.4.0 to 5.4.2
- 5.5.0 to 5.5.1
Exploitation Mechanism
Attackers exploit a path traversal vulnerability in the git tag name to gain unauthorized access and read arbitrary files.
Mitigation and Prevention
Immediate Steps to Take
- Upgrade Bitbucket Server to the fixed versions corresponding to the affected range.
- Monitor and restrict access to sensitive files and directories.
Long-Term Security Practices
- Regularly update and patch software to prevent vulnerabilities.
- Implement access controls and least privilege principles to limit exposure.
Patching and Updates
- Apply security patches provided by Atlassian promptly to address the vulnerability.