CVE-2019-20900 : What You Need to Know
Learn about CVE-2019-20900 affecting Atlassian Jira Server and Data Center versions prior to 8.7.0. Understand the XSS vulnerability, its impact, affected systems, and mitigation steps.
Atlassian Jira Server and Data Center versions prior to 8.7.0 are vulnerable to a cross-site scripting (XSS) flaw in the Add Field module, allowing remote attackers to inject malicious HTML or JavaScript code.
Understanding CVE-2019-20900
This CVE identifies a security vulnerability in Atlassian Jira Server and Data Center that enables XSS attacks.
What is CVE-2019-20900?
The Add Field module in earlier versions of Atlassian Jira Server and Data Center is susceptible to a cross-site scripting (XSS) vulnerability, allowing malicious actors to inject their own HTML or JavaScript code.
The Impact of CVE-2019-20900
This vulnerability can be exploited by remote attackers to execute arbitrary code within the context of the affected application, potentially leading to unauthorized actions or data theft.
Technical Details of CVE-2019-20900
Atlassian Jira Server and Data Center versions before 8.7.0 are affected by this security issue.
Vulnerability Description
The vulnerability in the Add Field module allows attackers to perform XSS attacks by injecting malicious code.
Affected Systems and Versions
- Product: Jira Server
- Vendor: Atlassian
- Versions Affected: All versions prior to 8.7.0
Exploitation Mechanism
Attackers can exploit this vulnerability by injecting crafted HTML or JavaScript code through the Add Field module, potentially compromising the security of the application.
Mitigation and Prevention
It is crucial to take immediate steps to address and prevent exploitation of this vulnerability.
Immediate Steps to Take
- Upgrade Atlassian Jira Server and Data Center to version 8.7.0 or later to mitigate the XSS vulnerability.
- Implement input validation and output encoding to prevent malicious code injection.
Long-Term Security Practices
- Regularly update and patch software to address known security issues.
- Conduct security assessments and audits to identify and remediate vulnerabilities.
Patching and Updates
Atlassian has released version 8.7.0 to address this vulnerability. Ensure timely installation of patches and updates to protect your systems from potential attacks.