CVE-2023-29713 in Secure Gateway
Summary
by MITRE • 06/09/2023
Cross Site Scripting vulnerability found in Vade Secure Gateway allows a remote attacker to execute arbitrary code via a crafted payload to the GET request after the /css/ directory.
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Analysis
by VulDB Data Team • 12/13/2025
The vulnerability identified as CVE-2023-29713 represents a critical cross site scripting flaw within the Vade Secure Gateway security solution. This vulnerability resides in the application's handling of GET requests directed to the /css/ directory, creating an avenue for remote attackers to inject malicious scripts into the victim's browser. The flaw demonstrates characteristics consistent with CWE-79 - Improper Neutralization of Input During Web Page Generation, where user-supplied data is inadequately sanitized before being rendered in web responses.
The technical exploitation of this vulnerability occurs when an attacker crafts a malicious payload and submits it through a GET request to the vulnerable /css/ directory endpoint. The Vade Secure Gateway fails to properly validate or escape input parameters, allowing the attacker to inject HTML or JavaScript code that executes within the context of the victim's browser session. This presents a significant risk as it enables attackers to steal session cookies, perform unauthorized actions on behalf of users, or redirect victims to malicious websites. The vulnerability's location within the css directory suggests potential improper handling of static resource requests or configuration files that should not accept user input.
The operational impact of this vulnerability extends beyond simple script execution, as it compromises the integrity of the entire security gateway infrastructure. Attackers could leverage this XSS flaw to escalate privileges, access sensitive administrative functions, or establish persistent backdoors within the network. The vulnerability undermines the trust model that security gateways are designed to maintain, potentially allowing attackers to bypass security controls and gain unauthorized access to protected resources. According to ATT&CK framework, this vulnerability maps to T1059.007 - Command and Scripting Interpreter: JavaScript, as well as T1566.001 - Phishing: Spearphishing Attachment, since attackers can use this flaw to deliver malicious payloads through crafted web requests.
Mitigation strategies should focus on implementing comprehensive input validation and output encoding mechanisms throughout the application's request handling pipeline. The recommended approach includes sanitizing all user-supplied input before processing, implementing proper content security policies, and ensuring that static resource directories do not accept or process user parameters. Organizations should also deploy web application firewalls to detect and block suspicious requests, while conducting regular security assessments to identify similar vulnerabilities in related components. The fix should involve strict parameter validation for all endpoints, particularly those handling static content, and the implementation of automatic escaping mechanisms for dynamic content rendering. Additionally, security teams should monitor for anomalous requests targeting the /css/ directory and implement logging mechanisms to track potential exploitation attempts.