CVE-2019-6009 in SHIRASAGI
Summary
by MITRE
Open redirect vulnerability in SHIRASAGI v1.7.0 and earlier allows remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via unspecified vectors.
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Analysis
by VulDB Data Team • 12/19/2023
The CVE-2019-6009 vulnerability represents a critical open redirect flaw discovered in the SHIRASAGI content management system version 1.7.0 and earlier. This vulnerability resides within the application's handling of user input and redirection mechanisms, creating a pathway for remote attackers to manipulate web navigation behavior. The flaw specifically affects the system's ability to properly validate and sanitize redirect parameters, allowing malicious actors to craft URLs that would redirect users to attacker-controlled domains. Such vulnerabilities are particularly dangerous because they can be leveraged to bypass security controls and deceive users into visiting malicious websites. The unspecified vectors mentioned in the description suggest that the vulnerability may exist across multiple entry points within the application's redirect functionality, potentially affecting various user interactions and navigation flows.
The technical implementation of this vulnerability stems from inadequate input validation and sanitization within the SHIRASAGI application's redirect handling code. When users encounter links or navigation elements that trigger redirects, the system fails to properly verify that the target URL belongs to the legitimate application domain. This weakness creates an environment where attacker-controlled URLs can be injected into the redirect chain, effectively allowing the application to function as a conduit for malicious redirection. The vulnerability can be exploited through various means including crafted URLs in web forms, malicious links in emails, or manipulated parameters in web requests. Security researchers have categorized such flaws under CWE-601 Open Redirect, which specifically addresses the risk of web applications redirecting users to untrusted domains without proper validation.
The operational impact of CVE-2019-6009 extends beyond simple navigation manipulation and creates significant security risks for organizations using affected SHIRASAGI versions. Attackers can leverage this vulnerability to conduct sophisticated phishing campaigns by redirecting users to counterfeit login pages or malicious websites that mimic legitimate services. The vulnerability undermines user trust and can lead to credential theft, data breaches, and other malicious activities. Organizations may experience reputational damage when users fall victim to such attacks, as the redirects appear to originate from trusted sources within the application. The open redirect flaw also enables attackers to bypass security measures such as URL filtering systems and security gateways, as the malicious redirection occurs through what appears to be legitimate application functionality. This vulnerability aligns with tactics described in the MITRE ATT&CK framework under the 'Initial Access' phase, specifically targeting 'Phishing' and 'Spearphishing via Service' techniques.
Mitigation strategies for CVE-2019-6009 should focus on implementing robust input validation and redirect destination verification mechanisms. Organizations should immediately upgrade to SHIRASAGI version 1.7.1 or later, which contains the necessary patches to address this vulnerability. System administrators should implement strict validation of redirect parameters, ensuring that all redirection targets are either within the application's trusted domain or explicitly approved through a secure configuration mechanism. The implementation of a whitelist approach for redirect destinations provides the most effective defense against this type of vulnerability. Additionally, organizations should conduct comprehensive security assessments of their web applications to identify similar vulnerabilities in other components. Network monitoring systems should be configured to detect unusual redirect patterns that may indicate exploitation attempts. Regular security updates and patch management procedures should be enforced to prevent similar vulnerabilities from arising in the future. The remediation efforts should also include user education programs to help identify potential phishing attempts that may exploit such vulnerabilities.