CVE-2023-30285 in Issue Sync Synchronization
Summary
by MITRE • 05/31/2023
An issue in Deviniti Issue Sync Synchronization v3.5.2 for Jira allows attackers to obtain the login credentials of a user via a crafted request sent to /rest/synchronizer/1.0/technicalUser.
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Analysis
by VulDB Data Team • 12/21/2025
The vulnerability identified as CVE-2023-30285 represents a critical authentication bypass flaw within the Deviniti Issue Sync Synchronization plugin version 3.5.2 for Jira. This security weakness specifically affects the plugin's handling of requests directed to the /rest/synchronizer/1.0/technicalUser endpoint, creating an avenue for unauthorized access to user credentials. The flaw exists due to inadequate input validation and authentication mechanisms within the plugin's REST API implementation, allowing malicious actors to craft specially formatted requests that can extract sensitive authentication information from the system.
The technical exploitation of this vulnerability stems from the plugin's failure to properly validate incoming requests to the technicalUser endpoint. When an attacker sends a crafted HTTP request to the specified REST endpoint, the system does not adequately verify the authenticity of the requestor or implement proper access controls. This allows unauthorized users to potentially retrieve login credentials, session tokens, or other sensitive authentication data that should remain protected within the Jira environment. The vulnerability aligns with CWE-287 which addresses improper authentication issues in software applications, specifically highlighting the failure to properly authenticate users or validate request integrity. The flaw demonstrates characteristics of weak session management and insufficient input sanitization that can lead to credential exposure.
The operational impact of this vulnerability extends beyond simple credential theft, as it can enable attackers to escalate their privileges within the Jira environment. Once credentials are obtained, threat actors can potentially access sensitive project data, modify issues, create new users, or even gain administrative access to the entire Jira instance. The attack vector is particularly concerning because it targets the synchronization functionality that typically operates with elevated privileges to maintain integration between Jira and external systems. This vulnerability can be exploited remotely without requiring prior authentication, making it especially dangerous in environments where Jira is accessible from untrusted networks. The flaw also represents a significant risk to organizations that rely on Deviniti's synchronization capabilities for critical business processes, as it undermines the integrity of their authentication infrastructure.
Organizations affected by CVE-2023-30285 should immediately implement mitigations including updating to the latest version of the Deviniti Issue Sync Synchronization plugin where available, applying network-level restrictions to limit access to the vulnerable endpoint, and implementing additional authentication controls such as multi-factor authentication. Security teams should also conduct comprehensive network monitoring to detect suspicious requests to the technicalUser endpoint and consider implementing web application firewalls to filter malicious traffic. The vulnerability demonstrates the importance of proper API security implementation and adherence to security best practices such as those outlined in the OWASP API Security Top 10, which emphasizes the need for robust authentication and authorization mechanisms. Organizations should also review their incident response procedures to ensure they can quickly identify and remediate similar vulnerabilities in their software ecosystem. The flaw serves as a reminder that third-party plugins, while extending functionality, can introduce significant security risks if not properly maintained and secured according to industry standards like those defined in the NIST Cybersecurity Framework and ISO/IEC 27001 security requirements.