CVE-2007-2060 in Wizz RSS Reader
Summary
by MITRE
Cross-zone scripting vulnerability in the Wizz RSS Reader before 2.1.9 extension to Mozilla Firefox allows remote attackers to execute arbitrary Javascript in the browser chrome via the RSS feed DOM.
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Analysis
by VulDB Data Team • 04/23/2025
The CVE-2007-2060 vulnerability represents a critical cross-zone scripting flaw in the Wizz RSS Reader extension for Mozilla Firefox versions prior to 2.1.9. This vulnerability arises from improper handling of RSS feed data within the browser's chrome environment, creating a dangerous privilege escalation vector that allows remote attackers to inject and execute arbitrary javascript code with elevated privileges. The flaw specifically exploits the extension's failure to properly sanitize or validate rss feed content before rendering it within the browser's privileged chrome context, effectively bypassing the security boundaries that normally separate user content from browser internals.
The technical implementation of this vulnerability stems from the extension's inadequate input validation mechanisms when processing rss feed data. When the Wizz RSS Reader processes maliciously crafted rss feeds, it fails to properly escape or filter special characters that could be interpreted as javascript code within the browser chrome environment. This creates a classic cross-site scripting scenario where attacker-controlled content flows directly into the browser's privileged execution context. The vulnerability is particularly dangerous because it operates at the chrome level rather than the user content level, meaning that the executed javascript code runs with the same privileges as the browser itself rather than being restricted to the typical user content sandbox.
The operational impact of CVE-2007-2060 is severe and far-reaching, as successful exploitation can lead to complete browser compromise and potential system infiltration. Attackers can leverage this vulnerability to execute arbitrary code with browser privileges, potentially accessing user data, modifying browser settings, or even installing additional malicious software. The attack vector requires only that a user access a malicious rss feed, making it particularly effective for phishing campaigns or social engineering attacks. This vulnerability directly maps to CWE-79 Cross-Site Scripting and CWE-94 Code Injection, representing a clear violation of the principle of least privilege in browser security architecture. The vulnerability also aligns with ATT&CK technique T1059.007 Command and Scripting Interpreter: JavaScript, demonstrating how attackers can leverage browser-based scripting capabilities to achieve persistent access.
Mitigation strategies for CVE-2007-2060 focus primarily on immediate remediation through software updates and enhanced input validation. Users should upgrade to Wizz RSS Reader version 2.1.9 or later, which includes proper input sanitization and validation mechanisms. System administrators should implement strict feed validation policies and consider deploying content filtering solutions that can detect and block malicious rss content before it reaches user browsers. Additionally, browser security configurations should enforce strict sandboxing policies for extension environments, and users should be educated about the risks of accessing untrusted rss feeds. Organizations may also consider implementing network-level protections that monitor for suspicious rss feed patterns or content that could indicate exploitation attempts. The vulnerability highlights the critical importance of proper input validation and privilege separation in browser extension development, as well as the need for comprehensive security testing of all code that operates within privileged browser contexts.