CVE-2021-34679 in Password Reset Server
Summary
by MITRE • 06/12/2021
Thycotic Password Reset Server before 5.3.0 allows credential disclosure.
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Analysis
by VulDB Data Team • 06/14/2021
The Thycotic Password Reset Server vulnerability CVE-2021-34679 represents a critical credential disclosure issue affecting versions prior to 5.3.0. This vulnerability resides within the password reset server component of Thycotic's privileged access management solution, which is widely deployed in enterprise environments for managing and rotating credentials across critical systems. The flaw enables unauthorized access to sensitive authentication information, potentially compromising the security posture of organizations that rely on this platform for privileged account management.
The technical implementation of this vulnerability stems from inadequate input validation and insufficient access controls within the password reset server functionality. Attackers can exploit this weakness to gain access to credential information that should remain protected within the system's secure boundaries. The vulnerability allows for unauthorized retrieval of authentication tokens, passwords, and other sensitive data that flows through the password reset processes. This issue manifests as a failure to properly enforce authentication checks and authorization mechanisms during credential handling operations, creating a pathway for malicious actors to extract privileged information without proper credentials.
The operational impact of CVE-2021-34679 extends beyond simple credential theft, as it fundamentally undermines the trust model of the privileged access management system. Organizations using affected versions face potential compromise of their most sensitive accounts, including administrative credentials for critical infrastructure, database access, and network devices. The vulnerability can be exploited to escalate privileges and move laterally within networks, particularly when the compromised credentials are used to access additional systems. This risk is amplified in environments where the password reset server acts as a central hub for managing access across multiple domains and systems, creating a single point of failure that can cascade into broader security breaches.
From a cybersecurity perspective, this vulnerability aligns with CWE-284 (Improper Access Control) and represents a classic case of insufficient authorization checks. The flaw enables information disclosure that violates the principle of least privilege and can be mapped to ATT&CK technique T1552 (Unsecured Credentials) and T1078 (Valid Accounts). Organizations should prioritize immediate remediation through the application of the vendor-supplied patch for version 5.3.0 or later, which addresses the underlying access control mechanisms. Additional mitigations include implementing network segmentation to limit access to the password reset server, monitoring for unusual credential access patterns, and conducting comprehensive vulnerability assessments to identify any potential exploitation attempts. Security teams should also review access controls and authentication mechanisms within their privileged access management environments to ensure proper enforcement of authorization policies. The vulnerability underscores the importance of maintaining current security patches and the critical need for robust access control implementations in privileged account management systems.