CVE-2020-29453 : Security Advisory and Response

Jira Server and Jira Data Center versions before 8.5.11, from 8.6.0 before 8.13.3, and from 8.14.0 before 8.15.0 are affected by a vulnerability that allows unauthenticated remote attackers to read arbitrary files within specific directories.

Understanding CVE-2020-29453

This CVE involves a security issue in Jira Server and Jira Data Center that could potentially lead to unauthorized access to sensitive files.

What is CVE-2020-29453?

The CachingResourceDownloadRewriteRule class in Jira Server and Jira Data Center versions mentioned above allows unauthenticated remote attackers to read arbitrary files within WEB-INF and META-INF directories by exploiting an incorrect path access check.

The Impact of CVE-2020-29453

This vulnerability could be exploited by malicious actors to access confidential information stored in the affected directories, potentially leading to unauthorized disclosure of sensitive data.

Technical Details of CVE-2020-29453

This section provides more in-depth technical information about the vulnerability.

Vulnerability Description

The CachingResourceDownloadRewriteRule class in Jira Server and Jira Data Center versions before 8.5.11, from 8.6.0 before 8.13.3, and from 8.14.0 before 8.15.0 allows unauthenticated remote attackers to read arbitrary files within WEB-INF and META-INF directories via an incorrect path access check.

Affected Systems and Versions

Product: Jira Server
Versions Affected: < 8.5.11, >= 8.6.0, < 8.13.3, >= 8.14.0, < 8.15.0
Product: Jira Data Center
Versions Affected: < 8.5.11, >= 8.6.0, < 8.13.3, >= 8.14.0, < 8.15.0

Exploitation Mechanism

The vulnerability is exploited by unauthenticated remote attackers who can manipulate the path access check to read arbitrary files within specific directories.

Mitigation and Prevention

It is crucial to take immediate steps to address and prevent exploitation of this vulnerability.

Immediate Steps to Take

Update Jira Server and Jira Data Center to versions 8.5.11, 8.13.3, or 8.15.0 to mitigate the vulnerability.
Monitor for any unauthorized access to sensitive directories.

Long-Term Security Practices

Regularly update and patch Jira Server and Jira Data Center to the latest versions to prevent security vulnerabilities.
Implement access controls and authentication mechanisms to restrict unauthorized access to critical files.

Patching and Updates

Apply security patches provided by Atlassian promptly to ensure the protection of your systems and data.