CVE-2021-26086 Explained : Impact and Mitigation
Learn about CVE-2021-26086, a path traversal vulnerability in Atlassian Jira Server and Data Center, allowing remote attackers to access specific files. Find out how to mitigate this security issue.
A path traversal vulnerability in Atlassian Jira Server and Data Center before specific versions allows remote attackers to read certain files through the /WEB-INF/web.xml endpoint.
Understanding CVE-2021-26086
This CVE refers to a security flaw in Atlassian Jira Server and Data Center that enables unauthorized access to files.
What is CVE-2021-26086?
The vulnerability permits remote attackers to retrieve specific files by exploiting a path traversal issue in the /WEB-INF/web.xml endpoint.
The Impact of CVE-2021-26086
This security flaw poses a risk by allowing attackers to access sensitive files on the affected systems, potentially leading to unauthorized disclosure of information.
Technical Details of CVE-2021-26086
This section covers the specifics of the vulnerability, affected systems, and the mechanism of exploitation.
Vulnerability Description
The flaw in Atlassian Jira Server and Data Center versions prior to 8.5.14, 8.13.6, and 8.16.1 enables attackers to read specific files via the path traversal vulnerability in the /WEB-INF/web.xml endpoint.
Affected Systems and Versions
Both Jira Server and Jira Data Center versions are impacted. Versions earlier than 8.5.14, between 8.6.0 and 8.13.6, and between 8.14.0 and 8.16.1 are vulnerable.
Exploitation Mechanism
Remote attackers can exploit the path traversal vulnerability in the /WEB-INF/web.xml endpoint to access files they are not authorized to view.
Mitigation and Prevention
These are the steps to address the CVE and enhance system security.
Immediate Steps to Take
Update Atlassian Jira Server and Data Center to versions that address the vulnerability. Implement access controls and network restrictions.
Long-Term Security Practices
Regularly monitor security advisories, audit file permissions, and conduct penetration testing to identify and mitigate security vulnerabilities.
Patching and Updates
Stay informed about security updates released by Atlassian and promptly apply patches to protect systems from known exploits.