CVE-2023-29712 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 X-Rewrite-URL parameter.
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Analysis
by VulDB Data Team • 12/13/2025
The vulnerability identified as CVE-2023-29712 represents a critical cross site scripting flaw within the Vade Secure Gateway product line, specifically targeting the X-Rewrite-URL parameter handling mechanism. This weakness enables remote attackers to inject malicious scripts into web applications that process user input through this particular parameter, creating a significant security risk for organizations relying on Vade Secure Gateway for email security and content filtering services. The vulnerability stems from inadequate input validation and sanitization processes that fail to properly escape or filter potentially malicious content submitted through the X-Rewrite-URL header.
The technical exploitation of this vulnerability occurs when an attacker crafts a malicious payload containing script code and submits it through the X-Rewrite-URL parameter. The Vade Secure Gateway fails to adequately sanitize this input before processing or forwarding it, allowing the malicious script to execute within the context of a victim's browser session. This behavior aligns with CWE-79, which specifically addresses cross-site scripting vulnerabilities where untrusted data is improperly integrated into web pages without appropriate validation or escaping mechanisms. The attack vector operates through HTTP headers, making it particularly challenging to detect and prevent using traditional web application firewall rules that typically focus on URL parameters or form data.
The operational impact of this vulnerability extends beyond simple script execution, as it can enable attackers to perform a range of malicious activities including session hijacking, data theft, redirection to malicious sites, and potential privilege escalation within the affected environment. Organizations using Vade Secure Gateway may experience unauthorized access to sensitive email communications, compromise of user authentication tokens, and potential lateral movement within their network infrastructure. The vulnerability's remote nature means attackers do not require physical access or local network presence to exploit the flaw, making it particularly dangerous in cloud-based email security deployments where the gateway serves as a central point of control for email traffic.
Security professionals should implement immediate mitigations including input validation for all HTTP headers, particularly those used for URL rewriting and redirection functions. The ATT&CK framework categorizes this vulnerability under T1059.007 for scripting and T1566.001 for spearphishing via email, highlighting the multi-layered attack surface this vulnerability creates. Organizations should also consider implementing comprehensive header filtering mechanisms, regular security assessments of gateway configurations, and network monitoring to detect anomalous traffic patterns associated with exploitation attempts. The vulnerability demonstrates the critical importance of proper input sanitization in web applications and highlights the need for security controls that address both application-level and network-level threats. Regular updates and patches from Vade Secure should be prioritized, while temporary workarounds such as disabling affected functionality or implementing strict access controls may be necessary until permanent fixes are deployed.