CVE-2024-11694 is a medium-severity vulnerability affecting Mozilla products, specifically Firefox and Thunderbird. This vulnerability allows Enhanced Tracking Protection's Strict mode to inadvertently permit a Content Security Policy (CSP) frame-src bypass and DOM-based Cross-Site Scripting (XSS) via the Google SafeFrame shim in the Web Compatibility extension. The potential impact is significant, as it could expose users to malicious frames disguised as legitimate content.
With a CVSS score of 6.1, this vulnerability is classified as medium severity. The exploitability is considered medium, and it does not yet have any known public exploit. Therefore, organizations should remain vigilant and prioritize patching as soon as updates are available.
The urgency for organizations is highlighted by the fact that this vulnerability affects older versions of Firefox and Thunderbird, specifically versions below 133 for Firefox and Thunderbird, as well as Firefox ESR versions below 128.5 and 115.18. Organizations using these products should prioritize remediation to mitigate the risk of potential exploitation.
The disclosure date for this vulnerability was November 26, 2024, emphasizing the importance of immediate action to address this security issue.
Vulnerability Details
The official description states that this vulnerability allows Enhanced Tracking Protection's Strict mode to inadvertently permit a CSP frame-src bypass and DOM-based XSS through the Google SafeFrame shim in the Web Compatibility extension. The effect is that users may be exposed to malicious frames masquerading as legitimate content. This vulnerability affects the following versions: Firefox < 133, Firefox ESR < 128.5, Firefox ESR < 115.18, Thunderbird < 133, Thunderbird < 128.5, and Thunderbird < 115.18.
This issue has been classified under CWE-79, which pertains to improper neutralization of input during web page generation ('Cross-site Scripting').
The CVSS score of 6.1 indicates a medium severity level, which is significant enough to warrant immediate attention from security teams. The vulnerability has a low attack complexity, requires no privileges to exploit, and does require user interaction, indicating that an unsuspecting user could be tricked into visiting a malicious site.
The potential impacts of this vulnerability include low confidentiality and integrity impacts, with no availability impact indicated.
Technical Analysis
The root cause of this vulnerability lies in the Enhanced Tracking Protection's Strict mode, which failed to adequately enforce CSP rules. The attack vector is network-based, allowing attackers to exploit this vulnerability without physical access to the targeted systems. The attack complexity is low, meaning that even an unskilled attacker could potentially exploit this flaw if they can convince a user to interact with malicious content.
In terms of privileges required, none are necessary for the attacker, while user interaction is required, indicating that users must be manipulated into visiting a malicious site to trigger the attack.
The impacts on confidentiality and integrity are low, meaning that if exploited, an attacker may gain some information or manipulate some data, but not to a critical level. There is no impact on availability.
Risk & Impact Analysis
Risk to organizations includes the potential exposure to malicious content masquerading as legitimate through exploited vulnerabilities in Firefox and Thunderbird. Given the prevalence of web-based attacks, the blast radius of this vulnerability could be significant, especially for organizations with many users relying on these applications.
Organizations that fail to patch this vulnerability may find themselves at risk of data breaches or other security incidents. The urgency for remediation is rated as medium, indicating that while immediate action is necessary, it may not require the same level of urgency as higher-severity vulnerabilities.
To mitigate potential risks, organizations should actively monitor for updates and plan to incorporate this patch into their next update cycle. Additionally, implementing user training regarding the risks of interacting with unknown or suspicious web content can further reduce the likelihood of exploitation.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
This vulnerability affects the following versions: Firefox < 133, Firefox ESR < 128.5, Firefox ESR < 115.18, Thunderbird < 133, Thunderbird < 128.5, and Thunderbird < 115.18. If specific version ranges are not known, it is safe to state that all versions prior to the vendor patch are vulnerable.
Mitigation & Remediation
To mitigate this vulnerability, organizations should apply patches and updates promptly. Users should upgrade to the latest versions of Firefox and Thunderbird to ensure protection against this vulnerability. For those unable to apply updates immediately, it is recommended to review and adjust CSP settings as a temporary workaround.
Organizations should also consider penetration testing to validate the security posture of their applications and ensure similar vulnerabilities are not present.
Detection Guidance
Organizations should monitor logs for any unusual activity that may indicate attempts to exploit this vulnerability. Behavioral anomalies, such as unexpected content being displayed within frames, should raise alerts for further investigation.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2024-11694 lies in its potential to expose users to malicious content, highlighting the ongoing challenges faced by organizations in securing web applications. This vulnerability represents a broader trend of security issues related to CSP implementations and browser security features.
Organizations are encouraged to revisit their security policies and ensure that comprehensive testing is part of their development lifecycle. As part of strategic defensive takeaways, implementing a vulnerability management program can help in identifying and mitigating such vulnerabilities in the future.
Additionally, organizations should consider penetration testing reports to guide their remediation efforts and ensure against similar vulnerabilities.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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