Jira Data Center User Enumeration Scanner

The Jira Data Center is used by organizations for project management, issue tracking, and agile software development. It is a widely used application in enterprises for collaboration and optimizing workflows. The software is highly appreciated for its integrations with various development tools, making it a staple in many development environments. Admins and project managers leverage its features to maintain productivity and document essential project notes efficiently. Developers find Jira indispensable for tracking bugs and managing feature requests. It is used globally, from small startups to large corporations, to streamline project management processes and enhance team coordination.

Information disclosure vulnerabilities occur when sensitive information is inadvertently exposed to unauthorized users. This type of vulnerability can lead to the leakage of critical internal data if exploited. In the context of the Jira Data Center, such a vulnerability may expose user data, system configurations, or other sensitive project-related information. The 'User Picker' functionality, in this case, allows unauthorized access to user data, which could include names, roles, and potentially other identifiable information. This type of vulnerability can escalate to further unauthorized access attempts and exploitation of other linked applications. Ensuring appropriate access controls in place can mitigate such risks.

This vulnerability is present in a specific endpoint related to user management within Jira Data Center. The endpoint '/secure/popups/UserPickerBrowser.jspa' allows access to the 'User Picker' functionality even by unauthorized users. The issue arises when the application does not adequately restrict access to this page, resulting in an information leakage scenario. Attackers could use this endpoint to gather usernames and other associated information without valid credentials. The endpoint's vulnerability stems from improper access control configurations that should ideally restrict information dissemination according to user privileges. The presence of the word 'user-picker' serves as an identifier for this vulnerability.

If exploited, this vulnerability can lead to a number of adverse effects. Unauthorized users gaining access to internal systems can utilize sensitive information to execute further attacks. This could include social engineering, targeted phishing attacks, or exploitation of other, more critical vulnerabilities within the system. Information disclosure can also impact the organization's reputation, resulting in a loss of trust from users and stakeholders. It can further put affected individuals at risk due to the potential exposure of personal or work-related data. In severe cases, it could lead to regulatory fines due to non-compliance with data protection laws.