CVE-2024-28228 in YouTrack
Summary
by MITRE • 03/07/2024
In JetBrains YouTrack before 2024.1.25893 creation comments on behalf of an arbitrary user in HelpDesk was possible
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Analysis
by VulDB Data Team • 12/16/2024
This vulnerability exists in JetBrains YouTrack versions prior to 2024.1.25893 where the application fails to properly validate user permissions when creating helpdesk comments. The flaw allows authenticated users to submit comments on behalf of other users through the HelpDesk functionality, effectively bypassing the intended access controls. This represents a critical authorization bypass issue that undermines the integrity of user identity attribution within the system. The vulnerability stems from insufficient input validation and missing permission checks during the comment creation process, enabling malicious actors to impersonate legitimate users and potentially manipulate audit trails or user interactions.
The technical implementation of this vulnerability occurs within the HelpDesk comment submission mechanism where the system does not properly verify whether the authenticated user has the authority to create comments under another user's identity. This flaw typically manifests when the application accepts user identity parameters from client-side requests without proper server-side validation. The vulnerability can be exploited through API calls or direct web interface manipulation, allowing attackers to specify arbitrary user identifiers in comment creation requests. This issue falls under CWE-285 which specifically addresses insufficient authorization in software systems, and aligns with ATT&CK technique T1566.001 for credential harvesting through social engineering or API manipulation.
The operational impact of this vulnerability is significant as it enables attackers to create false narratives or misleading information within the helpdesk system. An attacker could submit malicious comments, manipulate support ticket histories, or create confusion about who actually made specific contributions to helpdesk discussions. This capability undermines the trustworthiness of the helpdesk system and can be used for both malicious purposes such as defacement or more subtle attacks like social engineering campaigns. The vulnerability particularly affects organizations that rely heavily on user attribution for support ticket management, audit purposes, or compliance requirements. Additionally, this flaw could be exploited to circumvent logging mechanisms that track user activities, potentially masking other malicious activities within the system.
Organizations should immediately upgrade to JetBrains YouTrack version 2024.1.25893 or later to remediate this vulnerability. The upgrade process should include thorough testing to ensure that existing workflows remain functional while the authorization controls are properly enforced. System administrators should also review existing helpdesk comments for any suspicious activity that might have occurred during the vulnerable period. Additional mitigations include implementing network-level restrictions to limit access to helpdesk functionality, monitoring API calls for unusual patterns in user identity parameters, and conducting regular security audits of user activity logs. Organizations should also consider implementing additional logging mechanisms that track identity changes during comment creation processes to detect potential exploitation attempts. The vulnerability demonstrates the critical importance of proper authorization controls in collaborative systems and highlights the need for comprehensive input validation across all user-facing interfaces.