CVE-2007-3174 in Online Banking
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in auth.w2b in W2B Online Banking allows remote attackers to inject arbitrary web script or HTML via the adtype parameter, a different vector than CVE-2006-1980.
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Analysis
by VulDB Data Team • 10/25/2017
The vulnerability identified as CVE-2007-3174 represents a cross-site scripting flaw within the W2B Online Banking authentication module, specifically in the auth.w2b component. This security weakness enables remote attackers to execute malicious web scripts or HTML code through manipulation of the adtype parameter, creating a persistent threat vector that operates independently from the previously identified CVE-2006-1980 vulnerability. The flaw resides in the application's input validation mechanisms, where user-supplied data from the adtype parameter is not adequately sanitized before being processed or rendered within the web interface.
The technical exploitation of this vulnerability occurs when an attacker crafts a malicious payload containing script code and injects it through the adtype parameter in the authentication request. Upon successful injection, the malicious code executes within the victim's browser context, potentially allowing attackers to steal session cookies, perform unauthorized transactions, or redirect users to malicious websites. This XSS vulnerability operates as a reflected attack vector since the malicious input is immediately reflected back to the user without proper sanitization or encoding, making it particularly dangerous for banking applications where user credentials and financial data are at stake.
The operational impact of CVE-2007-3174 extends beyond simple script injection, as it compromises the integrity and confidentiality of the online banking environment. Attackers can leverage this vulnerability to impersonate legitimate users, access sensitive financial information, and potentially manipulate account balances or transfer funds. The vulnerability affects the core authentication process of W2B Online Banking, undermining the trust model that financial institutions rely upon for secure user transactions. Organizations using this banking software face significant reputational damage and regulatory compliance risks if such vulnerabilities remain unpatched.
Security mitigations for this vulnerability should focus on implementing comprehensive input validation and output encoding mechanisms throughout the application's authentication flow. The recommended approach involves sanitizing all user inputs, particularly those used in dynamic content generation, through proper HTML encoding and validation techniques. Organizations should deploy web application firewalls to detect and block malicious payloads targeting the adtype parameter, while also implementing content security policies to prevent unauthorized script execution. This vulnerability aligns with CWE-79, which classifies cross-site scripting flaws, and maps to ATT&CK technique T1566, specifically targeting credential access through malicious web content, emphasizing the critical need for robust application security controls in financial services environments.