CVE-2019-20099 : Exploit Details and Defense Strategies

Atlassian Jira Server and Data Center component called VerifyPopServerConnection!add.jspa prior to version 8.7.0 is vulnerable to a CSRF attack, allowing an attacker to gather sensitive information.

Understanding CVE-2019-20099

This CVE involves a vulnerability in Atlassian Jira Server and Data Center versions before 8.7.0, enabling attackers to exploit a CSRF vulnerability.

What is CVE-2019-20099?

The vulnerability in the VerifyPopServerConnection!add.jspa component of Atlassian Jira Server and Data Center allows attackers to perform CSRF attacks, potentially leading to unauthorized access and data leakage.

The Impact of CVE-2019-20099

Exploiting this vulnerability can result in attackers tricking administrative users into executing malicious HTTP requests, enabling them to collect information about hosts and open ports on the internal network where the Jira server is deployed.

Technical Details of CVE-2019-20099

This section provides detailed technical insights into the CVE-2019-20099 vulnerability.

Vulnerability Description

The VerifyPopServerConnection!add.jspa component in Atlassian Jira Server and Data Center before version 8.7.0 is susceptible to CSRF attacks, allowing attackers to manipulate administrative users into sending malicious HTTP requests.

Affected Systems and Versions

Product: Jira Server
Vendor: Atlassian
Versions Affected: Prior to 8.7.0
Version Type: Custom

Exploitation Mechanism

Attackers can exploit this vulnerability by deceiving administrative users into executing malicious HTTP requests, enabling them to gather information about hosts and open ports on the internal network where the Jira server is located.

Mitigation and Prevention

Protecting systems from CVE-2019-20099 requires immediate actions and long-term security practices.

Immediate Steps to Take

Upgrade Atlassian Jira Server and Data Center to version 8.7.0 or higher to mitigate the vulnerability.
Educate users about the risks of CSRF attacks and the importance of verifying requests before execution.

Long-Term Security Practices

Implement strict access controls and authentication mechanisms to prevent unauthorized access.
Regularly monitor and audit network traffic for any suspicious activities that may indicate CSRF attacks.

Patching and Updates

Stay informed about security updates and patches released by Atlassian for Jira Server and Data Center.
Promptly apply patches to ensure systems are protected against known vulnerabilities.