CVE-2021-26079 : Exploit Details and Defense Strategies

The CardLayoutConfigTable component in Jira Server and Jira Data Center before version 8.5.15, and from version 8.6.0 before version 8.13.7, and from version 8.14.0 before 8.17.0 allows remote attackers to inject arbitrary HTML or JavaScript via a cross site scripting (XSS) vulnerability.

Understanding CVE-2021-26079

This CVE concerns a vulnerability in Jira Server and Jira Data Center versions prior to 8.5.15, between 8.6.0 and 8.13.7, and between 8.14.0 and 8.17.0 that can be exploited by remote attackers.

What is CVE-2021-26079?

The CVE-2021-26079 refers to a cross site scripting (XSS) vulnerability in the CardLayoutConfigTable component in Jira Server and Jira Data Center, allowing attackers to inject malicious HTML or JavaScript remotely.

The Impact of CVE-2021-26079

This vulnerability can lead to significant security risks as attackers can execute arbitrary code, steal sensitive data, or perform unauthorized actions through injected scripts.

Technical Details of CVE-2021-26079

This section provides detailed technical insights into the vulnerability.

Vulnerability Description

The vulnerability lies in the CardLayoutConfigTable component in Jira Server and Jira Data Center, enabling remote attackers to perform XSS attacks by injecting malicious HTML or JavaScript.

Affected Systems and Versions

Jira Server and Jira Data Center versions prior to 8.5.15, between 8.6.0 and 8.13.7, and between 8.14.0 and 8.17.0 are affected by this vulnerability.

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting malicious code through the CardLayoutConfigTable component, allowing them to execute unauthorized scripts remotely.

Mitigation and Prevention

To protect your systems from CVE-2021-26079, follow these security measures.

Immediate Steps to Take

Update Jira Server and Jira Data Center to versions 8.5.15, 8.13.7, or 8.17.0 where the vulnerability is patched.
Implement strict input validation mechanisms to prevent XSS attacks.

Long-Term Security Practices

Regularly monitor security advisories from Atlassian for any new vulnerabilities.
Train employees on identifying and reporting security threats promptly.

Patching and Updates

Apply security patches provided by Atlassian for Jira Server and Jira Data Center to ensure protection against known vulnerabilities.