CVE-2024-8776 Overview
CVE-2024-8776 is a reflected cross-site scripting (XSS) vulnerability in INTUMIT SmartRobot. The application fails to validate a specific page parameter, allowing unauthenticated remote attackers to inject arbitrary JavaScript. Successful exploitation executes attacker-controlled script in a victim's browser session when the victim opens a crafted link.
The issue is classified under [CWE-79] (Improper Neutralization of Input During Web Page Generation). The vulnerability requires user interaction and affects the confidentiality and integrity of the victim's browser context, with a scope change indicating impact beyond the vulnerable component.
Critical Impact
Unauthenticated attackers can hijack sessions, deliver phishing payloads, or perform actions as authenticated SmartRobot users through crafted URLs.
Affected Products
- INTUMIT SmartRobot (all versions prior to the vendor fix)
- Deployments exposing the vulnerable page parameter to untrusted networks
- Web-facing SmartRobot chatbot instances
Discovery Timeline
- 2024-09-16 - CVE-2024-8776 published to NVD
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2024-8776
Vulnerability Analysis
SmartRobot reflects a specific page parameter into the HTTP response without proper output encoding or input sanitization. An attacker who crafts a URL containing JavaScript in the vulnerable parameter can cause the server to embed that script in the rendered HTML. When a victim visits the link, the browser executes the injected payload in the context of the SmartRobot origin.
Because the vulnerability is reflected rather than stored, delivery relies on social engineering. Phishing emails, malicious advertisements, or crafted links from trusted sites remain effective distribution channels. The vulnerability requires no authentication, so any exposed SmartRobot instance is reachable.
Root Cause
The root cause is missing input validation and output encoding on a server-side page parameter. The application concatenates user-supplied input directly into the response body. Standard defenses such as contextual HTML entity encoding, JavaScript escaping, or a strict Content Security Policy (CSP) are absent for this parameter.
Attack Vector
Exploitation is network-based and requires user interaction. An attacker crafts a URL containing a JavaScript payload in the vulnerable parameter and delivers it to a victim. When the victim clicks the link, SmartRobot reflects the payload in its response and the browser executes it. The scope change reflects the ability of the injected script to affect cookies, tokens, and DOM elements accessible from the SmartRobot origin.
No verified exploit code is publicly available for this issue. See the TW-CERT Security Advisory for vendor-coordinated technical details.
Detection Methods for CVE-2024-8776
Indicators of Compromise
- HTTP GET requests to SmartRobot endpoints containing URL-encoded <script>, javascript:, onerror=, or onload= sequences in query parameters
- Referrer headers pointing to unfamiliar external domains preceding SmartRobot page loads
- Web server access logs showing repeated probing of the same page parameter with varying payload structures
- Browser console errors or CSP violation reports originating from SmartRobot pages
Detection Strategies
- Deploy web application firewall (WAF) signatures for common XSS payload patterns targeting SmartRobot URIs
- Correlate outbound requests from user browsers to attacker-controlled domains immediately after SmartRobot page visits
- Enable and monitor CSP report-only mode to surface script execution from unexpected sources
Monitoring Recommendations
- Ingest SmartRobot web server and reverse proxy logs into a central SIEM for query-parameter inspection
- Alert on HTTP 200 responses whose bodies contain reflected script-like content from client-supplied parameters
- Track user sessions that generate anomalous API calls shortly after loading SmartRobot pages from external referrers
How to Mitigate CVE-2024-8776
Immediate Actions Required
- Apply the fixed SmartRobot version supplied by INTUMIT as referenced in the TW-CERT Security Advisory
- Restrict public exposure of SmartRobot administrative and page endpoints where operationally feasible
- Invalidate active user sessions and force re-authentication after patching to limit lingering session theft
Patch Information
INTUMIT has coordinated with TW-CERT to publish a security advisory containing fixed version details. Administrators should consult the TW-CERT Incident Report and vendor communications to obtain the patched release and apply it across all SmartRobot deployments.
Workarounds
- Deploy WAF rules that block requests containing HTML tags, event handlers, or javascript: schemes in the affected page parameter
- Enforce a strict Content Security Policy that disallows inline scripts and restricts script sources to trusted origins
- Set HttpOnly and Secure flags on session cookies to reduce impact of script-based theft
- Educate users to avoid clicking unverified SmartRobot links delivered via email or messaging platforms
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
