CVE-2021-40852 in GIM
Summary
by MITRE • 12/17/2021
TCMAN GIM is affected by an open redirect vulnerability. This vulnerability allows the redirection of user navigation to pages controlled by the attacker. The exploitation of this vulnerability might allow a remote attacker to obtain information.
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Analysis
by VulDB Data Team • 12/24/2021
The vulnerability identified as CVE-2021-40852 affects TCMAN GIM, a system designed for managing and monitoring various network operations. This open redirect vulnerability represents a significant security flaw that enables malicious actors to manipulate user navigation flows within the application. The vulnerability stems from insufficient validation of redirect parameters, allowing attackers to craft malicious URLs that would redirect users to arbitrary destinations controlled by the attacker rather than the intended legitimate pages.
The technical implementation of this vulnerability involves the application's failure to properly sanitize or validate user-supplied input used in redirect functionality. When users encounter links or buttons that trigger redirects, the application processes redirect parameters without adequate verification of their destination URLs. This weakness allows attackers to insert malicious URLs into the redirect chain, potentially leading to phishing attacks or further exploitation. The vulnerability operates at the application layer and can be exploited through web-based interfaces, making it particularly dangerous in environments where users interact with the system through web browsers.
From an operational impact perspective, this vulnerability creates multiple attack vectors for threat actors seeking to compromise user sessions or harvest sensitive information. Attackers can leverage the open redirect to create deceptive landing pages that appear legitimate to users, potentially capturing credentials or other sensitive data. The vulnerability also enables more sophisticated attacks such as cross-site scripting exploitation or session hijacking by redirecting users to malicious sites that can capture session tokens or perform other malicious activities. The information disclosure aspect of this vulnerability means that attackers could potentially access sensitive user data or system information through carefully crafted redirect sequences that lead to unauthorized access points.
The vulnerability aligns with CWE-601, which specifically addresses open redirect vulnerabilities in web applications, and can be mapped to ATT&CK technique T1566, which covers spearphishing with a link. Organizations implementing TCMAN GIM should consider immediate mitigation strategies including input validation of all redirect parameters, implementing a whitelist of allowed redirect domains, and conducting thorough security testing of all redirect functionality. Additionally, security teams should implement proper logging and monitoring of redirect activities to detect potential exploitation attempts. The remediation process requires careful analysis of all redirect mechanisms within the application, ensuring that only trusted domains are allowed in redirect operations while maintaining legitimate functionality for authorized navigation paths.