CVE-2019-20105 : What You Need to Know
Learn about CVE-2019-20105, an improper access control vulnerability in Atlassian's Application Links plugin, allowing remote attackers to bypass authentication and potentially access sensitive resources. Find mitigation steps and updates here.
An improper access control vulnerability exists in the EditApplinkServlet resource of the Atlassian Application Links plugin, allowing remote attackers to access sensitive resources without proper authentication.
Understanding CVE-2019-20105
This CVE details a security vulnerability in Atlassian's Application Links plugin that affects certain versions, potentially enabling unauthorized access to critical resources.
What is CVE-2019-20105?
The vulnerability in the EditApplinkServlet resource of the Atlassian Application Links plugin allows attackers with administrator session access to bypass authentication, potentially compromising security.
The Impact of CVE-2019-20105
The vulnerability could be exploited by remote attackers to access sensitive resources without proper authentication, potentially leading to unauthorized data access or manipulation.
Technical Details of CVE-2019-20105
This section provides technical insights into the vulnerability, affected systems, and exploitation mechanisms.
Vulnerability Description
The vulnerability in the EditApplinkServlet resource allows remote attackers with administrator session access to bypass authentication, potentially compromising security measures.
Affected Systems and Versions
- Application Links before 5.4.20, between 6.0.0 and 6.0.12, between 7.0.0 and 7.0.1, and between 7.1.0 and 7.1.3
- Jira Server and Data Center before 7.13.8, between 7.13.12 and 8.4.2, between 8.5.4 and 8.6.0, and before 8.6.1
Exploitation Mechanism
Remote attackers can exploit this vulnerability by leveraging an administrator's session to access critical resources without the need for re-authentication.
Mitigation and Prevention
Protect your systems from CVE-2019-20105 with these mitigation strategies:
Immediate Steps to Take
- Update the Atlassian Application Links plugin to a non-vulnerable version.
- Monitor and restrict access to sensitive resources.
Long-Term Security Practices
- Implement multi-factor authentication for enhanced security.
- Regularly audit and review access controls to prevent unauthorized access.
Patching and Updates
- Apply security patches provided by Atlassian promptly to address the vulnerability and enhance system security.