AngularJS Sandbox Escape via Template Injection in SicuroWeb

Executive Summary

This vulnerability exists in Beghelli Sicuro24 SicuroWeb, which uses AngularJS 1.5.2, an outdated component with known sandbox escape primitives. When combined with a template injection vulnerability in the same application, attackers can bypass AngularJS's sandbox restrictions and execute arbitrary JavaScript code within the operator's browser session.

This allows attackers to hijack sessions, manipulate the Document Object Model (DOM), and maintain persistent control over the browser. Additionally, network-adjacent attackers can exploit this vulnerability via man-in-the-middle (MITM) attacks on plaintext HTTP connections without requiring active user interaction.

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Detection Guidance

Detection of this vulnerability involves identifying the presence of AngularJS version 1.5.2 embedded in the Beghelli Sicuro24 SicuroWeb application and checking for template injection vulnerabilities that could be exploited.

Since the vulnerability can be exploited via man-in-the-middle (MITM) attacks on plaintext HTTP deployments, monitoring network traffic for unencrypted HTTP communications to the Sicuro24 SicuroWeb interface is important.

• Use tools like curl or wget to check the HTTP headers and content served by the Sicuro24 SicuroWeb interface to confirm if AngularJS 1.5.2 is in use.
• Example command to fetch the main page and search for AngularJS version: curl -s http://<target-ip-or-host>/ | grep -i angular
• Use a web vulnerability scanner or manual testing to attempt template injection payloads in input fields or parameters to detect template injection flaws.
• Monitor network traffic with tools like Wireshark or tcpdump to detect unencrypted HTTP traffic that could be intercepted for exploitation.

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Impact Analysis

The vulnerability can lead to arbitrary JavaScript execution in operator browser sessions, which can result in session hijacking.

Attackers can manipulate the web page content (DOM manipulation) and maintain persistent compromise of the browser.

Because the attack can be delivered via man-in-the-middle on plaintext HTTP without user interaction, it increases the risk of unauthorized access and control over user sessions.

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Compliance Impact

The vulnerability allows attackers to achieve arbitrary JavaScript execution in operator browser sessions, enabling session hijacking, DOM manipulation, and persistent browser compromise. This can lead to unauthorized access and manipulation of sensitive data handled by the application.

Such unauthorized access and potential data breaches could impact compliance with common standards and regulations like GDPR and HIPAA, which require protection of personal and sensitive information against unauthorized access and compromise.

However, the provided information does not explicitly mention the direct effects on compliance with these standards.

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Mitigation Strategies

Immediate mitigation steps include:

• Disabling or restricting access to the Sicuro24 SicuroWeb interface over plaintext HTTP to prevent MITM attacks.
• Enforcing HTTPS with strong TLS configurations to protect communications between operators and the web interface.
• Updating or patching the application to remove or upgrade the embedded AngularJS 1.5.2 component to a maintained and secure version.
• Reviewing and fixing any template injection vulnerabilities in the application to prevent exploitation of sandbox escape primitives.
• Limiting network access to the Sicuro24 SicuroWeb interface to trusted hosts or VPNs to reduce exposure.

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