Horizon Alert
Summary of the vulnerability and why it matters
This vulnerability affects AVideo's AD_Server plugin, allowing unauthenticated attackers to inject malicious code that can execute JavaScript in an administrator's browser. The core issue is that user-provided data in the log endpoint is not properly secured before being displayed. This could potentially lead to unauthorized actions or information exposure within the administrative interface if exploited.
- Stored attack allows malicious code execution.
- Impacts administrator sessions, potentially affecting control.
- Confirm relevance and assess potential administrative impact.
Attack Path
How an attacker could exploit the issue
An unauthenticated attacker can inject malicious code into the AVideo platform by manipulating the `label` parameter of the `log.php` endpoint within the AD_Server plugin. This malicious input is stored without proper sanitization and is later displayed to administrators through the Ad Types report. When an administrator views this report, the injected JavaScript can execute within their browser session, potentially leading to unauthorized actions or information disclosure.
- Entry Condition: No authentication required.
- Trigger Point: Storing a crafted `label` parameter.
- Resulting Risk: Arbitrary JavaScript execution in administrator sessions.
Live Threat
Current exploitation, exposure, and threat context
This vulnerability could expose administrators to arbitrary JavaScript execution in their browser sessions when they view the Ad Types report. This occurs when an unauthenticated attacker injects malicious HTML via the label parameter in the AD_Server plugin's log.php endpoint, which is then rendered unsanitized.
- Administrator browser sessions.
- Unsanitized HTML rendering in reports.
- Arbitrary JavaScript execution.
Operational Fix
Recommended remediation, mitigation, and detection steps
The Real-World Ownership section addresses the responsibility for managing this vulnerability within an organization. It is likely that a combination of Application Owners, who are responsible for the AVideo platform, and the Network/Security teams, who manage internet-facing systems and security policies, will need to collaborate. The first practical step is to identify all instances of AVideo, determine their reachability and business criticality, and then assign ownership for remediation planning.
- Application owners are responsible.
- Verify external access and criticality first.
- Plan remediation based on verified risk.
