CVE-2019-20901 Explained : Impact and Mitigation
Discover the impact of CVE-2019-20901 on Jira Server. Learn about the open redirect vulnerability allowing remote attackers to redirect users, potentially leading to phishing attacks. Find mitigation steps and preventive measures.
In December 2019, a vulnerability was identified in Jira Server, impacting versions prior to 8.5.2 and versions 8.6.0 to 8.6.1. This vulnerability allows remote attackers to redirect users to malicious websites, potentially facilitating phishing attacks.
Understanding CVE-2019-20901
This CVE involves an open redirect vulnerability in the login.jsp resource of Jira Server.
What is CVE-2019-20901?
The vulnerability in Jira Server allows attackers to manipulate the os_destination parameter to redirect users to external websites, enabling phishing attacks.
The Impact of CVE-2019-20901
The vulnerability poses a risk of users being redirected to malicious websites, increasing the likelihood of falling victim to phishing attacks.
Technical Details of CVE-2019-20901
This section provides detailed technical information about the vulnerability.
Vulnerability Description
The login.jsp resource in Jira Server versions prior to 8.5.2 and from 8.6.0 to 8.6.1 allows remote attackers to redirect users to external websites, potentially facilitating phishing attacks.
Affected Systems and Versions
- Product: Jira Server
- Vendor: Atlassian
- Affected Versions:
- Versions prior to 8.5.2
- Versions 8.6.0 to 8.6.1
Exploitation Mechanism
Attackers exploit the vulnerability by manipulating the os_destination parameter to redirect users to malicious websites, which can be used for phishing attacks.
Mitigation and Prevention
Protecting systems from CVE-2019-20901 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Update Jira Server to version 8.5.2 or higher to mitigate the vulnerability.
- Educate users about phishing attacks and advise caution when clicking on links.
Long-Term Security Practices
- Regularly monitor and update software to patch known vulnerabilities.
- Implement security awareness training to educate users on identifying and avoiding phishing attempts.
Patching and Updates
- Atlassian has likely released patches addressing this vulnerability. Ensure timely installation of updates to secure systems against potential exploits.