CVE-2015-3393 in Commerce WeDeal Module
Summary
by MITRE
Open redirect vulnerability in the Commerce WeDeal module before 7.x-1.3 for Drupal allows remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via an unspecified parameter.
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Analysis
by VulDB Data Team • 03/19/2019
The CVE-2015-3393 vulnerability represents a critical open redirect flaw within the Commerce WeDeal module for Drupal platforms, specifically affecting versions prior to 7.x-1.3. This vulnerability exposes systems to sophisticated phishing attacks by enabling remote adversaries to manipulate user redirection behavior through unspecified parameters within the module's functionality. The issue stems from inadequate input validation and sanitization mechanisms that fail to properly verify or restrict redirect URLs, creating a pathway for malicious actors to craft deceptive web requests that appear legitimate to end users. The vulnerability operates at the application layer, specifically targeting the module's redirect handling mechanisms and represents a classic example of insecure redirection practices that have been documented in various security frameworks including CWE-601.
The technical implementation of this vulnerability allows attackers to construct malicious URLs that, when clicked by unsuspecting users, redirect them to attacker-controlled domains while maintaining the appearance of legitimate website navigation. This occurs because the module fails to validate redirect targets against a whitelist of approved domains or to properly sanitize input parameters that determine redirect destinations. The flaw essentially permits any URL to be used as a redirect target, making it particularly dangerous for e-commerce environments where user trust and session integrity are paramount. The vulnerability's impact extends beyond simple redirection as it enables sophisticated social engineering campaigns where attackers can create convincing phishing pages that appear to originate from trusted e-commerce platforms, thereby bypassing user security awareness and potentially capturing sensitive authentication credentials or payment information.
From an operational standpoint, this vulnerability creates significant risk for Drupal-based commerce platforms that rely on the WeDeal module for their online transaction processing capabilities. The open redirect mechanism can be exploited to redirect users to malicious domains that host phishing pages designed to capture user credentials, credit card information, or other sensitive data. Attackers can leverage this vulnerability to create highly convincing phishing campaigns that appear to originate from legitimate e-commerce sites, significantly increasing the success rate of social engineering attacks. The vulnerability's exploitation requires minimal technical skill and can be automated, making it particularly dangerous for widespread deployment. Organizations using affected versions of the module face potential data breaches, financial losses, and reputational damage as users may unknowingly provide sensitive information to attackers through these deceptive redirections.
Mitigation strategies for CVE-2015-3393 should prioritize immediate patching of the Commerce WeDeal module to version 7.x-1.3 or later, which contains the necessary fixes to address the open redirect vulnerability. Organizations should implement comprehensive input validation and sanitization measures to ensure that all redirect parameters are properly validated against a trusted domain whitelist. Network-level controls including web application firewalls and URL filtering systems can provide additional layers of protection by monitoring and blocking suspicious redirect patterns. Security teams should conduct thorough vulnerability assessments to identify all instances of the affected module across their infrastructure and implement monitoring protocols to detect potential exploitation attempts. The vulnerability aligns with ATT&CK technique T1566.001 for phishing and represents a common weakness in web application security that has been addressed through standard security practices including proper input validation, output encoding, and the implementation of secure redirect mechanisms that prevent unauthorized domain redirection. Organizations should also consider implementing user education programs to raise awareness about suspicious redirects and phishing attempts that may exploit this vulnerability.