# MA-1171.102024: MyCERT Advisory - Security Updates – Mozilla Firefox

**Date:** 17 Oct 2024  
**Source:** https://www.mycert.org.my/portal/advisory?id=MA-1171.102024  
**Advisory ID:** MA-1171.102024

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**1.0 Introduction**
Recently, Mozilla has released security updates to address vulnerabilities in multiple products in Mozilla Products.
**2.0 Impact**
A cyber threat actor could exploit one of these vulnerabilities to take control of an affected system.
**3.0 Affected Products**
Mozilla Firefox 131:
- **CVE-2024-9391:**Prevent users from exiting full-screen mode in Firefox Focus for Android
- **CVE-2024-9392:**Compromised content process can bypass site isolation
- **CVE-2024-9393:**Cross-origin access to PDF contents through multipart responses
- **CVE-2024-9394:**Cross-origin access to JSON contents through multipart responses
- **CVE-2024-9395:**Specially crafted filename could be used to obscure download type
- **CVE-2024-9396:**Potential memory corruption may occur when cloning certain objects
- **CVE-2024-9397:**Potential directory upload bypass via clickjacking
- **CVE-2024-9398:**External protocol handlers could be enumerated via popups
- **CVE-2024-9399:**Specially crafted WebTransport requests could lead to denial of service
- **CVE-2024-9400:**Potential memory corruption during JIT compilation
- **CVE-2024-9401:**Memory safety bugs fixed in Firefox 131, Firefox ESR 115.16, Firefox ESR 128.3, Thunderbird 131, and Thunderbird 128.3
- **CVE-2024-9402:**Memory safety bugs fixed in Firefox 131: Firefox ESR 128.3, Thunderbird 131, and Thunderbird 128.3
- **CVE-2024-9403:**Memory safety bugs fixed in Firefox 131 and Thunderbird 131
**4.0 Recommendations**
CyberSecurity Malaysia encourages users and administrators to review [Mozilla’s security advisories](https://www.mozilla.org/en-US/security/advisories/) for more information and apply the necessary updates.
Kindly refer to the following URLs for more information: <https://www.mozilla.org/en-US/security/advisories/mfsa2024-46/>
Generally, CyberSecurity Malaysia advises the users of this devices to be updated with the latest security announcements by the vendor and follow best practice security policies to determine which updates should be applied.
For further enquiries, please contact us through the following channels:
E-mail: cyber999[at]cybersecurity.my 
Phone: 1-300-88-2999 (monitored during business hours) 
Mobile: +60 19 2665850 (24x7 call incident reporting) 
Business Hours: Mon - Fri 08:30 -17:30 MYT 
Web: [https://www.mycert.org.my](https://www.mycert.org.my/)
**5.0 References**
- <https://www.mozilla.org/en-US/security/advisories/mfsa2024-46/>
- <https://www.mozilla.org/en-US/security/known-vulnerabilities/firefox/>