CVE-2025-8319 in Message Archiver
Summary
by MITRE • 07/30/2025
the BMA login interface allows arbitrary JavaScript or HTML to be written straight into the page’s Document Object Model via the error= URL parameter
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Analysis
by VulDB Data Team • 08/06/2025
The vulnerability identified as CVE-2025-8319 represents a critical server-side request forgery and cross-site scripting weakness within the BMA login interface. This flaw stems from inadequate input validation and sanitization mechanisms that permit malicious actors to inject arbitrary JavaScript or HTML code directly into the web page's DOM through the error= URL parameter. The vulnerability exists at the application level where user-supplied parameters are not properly filtered or escaped before being rendered in the browser context, creating a direct pathway for code injection attacks.
The technical implementation of this vulnerability allows an attacker to manipulate the error= parameter in the login URL to inject malicious payloads that execute within the victim's browser context. This injection occurs because the application fails to sanitize or encode the error parameter value before incorporating it into the HTML response, directly violating secure coding principles and establishing a persistent XSS vector. The vulnerability is particularly dangerous as it leverages the login interface, which is frequently accessed by legitimate users, increasing the attack surface and potential impact.
From an operational standpoint, this vulnerability enables attackers to perform various malicious activities including session hijacking, credential theft, data exfiltration, and redirection to malicious sites. The attacker can craft URLs containing malicious JavaScript that executes in the context of authenticated users, potentially allowing them to access sensitive information, modify user accounts, or perform actions on behalf of legitimate users. The impact extends beyond simple XSS as it can be combined with other techniques to escalate privileges and compromise the entire authentication system.
The vulnerability aligns with CWE-79 which specifically addresses cross-site scripting flaws, and with ATT&CK technique T1059.007 for JavaScript execution within web browsers. The attack vector follows the pattern of parameter manipulation and DOM-based injection, where the web application's failure to validate input parameters creates an exploitable condition. Mitigation strategies should include immediate implementation of input validation and output encoding for all user-supplied parameters, particularly those used in URL query strings. The solution requires strict sanitization of the error= parameter to prevent any HTML or JavaScript content from being rendered in the DOM. Additionally, implementing Content Security Policy headers and using secure coding practices such as parameterized queries and proper HTML escaping will significantly reduce the risk of exploitation. Regular security testing including dynamic application security testing and manual penetration testing should be conducted to identify and remediate similar vulnerabilities across the application stack.