CVE-2024-9402 in Thunderbird
Summary
by MITRE • 10/01/2024
Memory safety bugs present in Firefox 130, Firefox ESR 128.2, and Thunderbird 128.2. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 131, Firefox ESR < 128.3, Thunderbird < 128.3, and Thunderbird < 131.
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Analysis
by VulDB Data Team • 03/09/2025
This vulnerability represents a critical memory safety issue affecting Mozilla Firefox and Thunderbird products across multiple versions. The flaw manifests as memory safety bugs that can potentially lead to memory corruption conditions, creating opportunities for remote code execution attacks. These vulnerabilities were identified in Firefox versions prior to 131, Firefox ESR versions prior to 128.3, and Thunderbird versions prior to 128.3 and 131, respectively. The presence of memory corruption evidence suggests these flaws could be exploited by attackers to gain unauthorized control over affected systems through carefully crafted malicious content.
The technical nature of these memory safety bugs aligns with common software vulnerabilities classified under CWE-119, which encompasses memory safety issues including buffer overflows, use-after-free conditions, and other memory corruption flaws. Such vulnerabilities typically arise from improper handling of memory allocation and deallocation operations, or from insufficient bounds checking during data processing operations. The fact that these bugs were present in widely used applications like web browsers and email clients makes them particularly dangerous as they could be exploited through common attack vectors such as malicious websites, email attachments, or crafted web content.
The operational impact of these vulnerabilities extends beyond simple exploitation potential to encompass significant security risks for end users and organizations. Attackers could leverage these memory corruption flaws to execute arbitrary code remotely, potentially leading to complete system compromise, data exfiltration, or establishment of persistent backdoors. The affected products' widespread usage means that successful exploitation could affect millions of users globally, making this vulnerability particularly concerning from a threat landscape perspective. Organizations relying on these applications for daily operations face substantial risk of security breaches that could result in financial loss, regulatory penalties, and reputational damage.
Organizations should prioritize immediate patching of affected systems to mitigate the risk posed by these memory safety vulnerabilities. The recommended mitigation strategy involves upgrading to the latest available versions of Firefox and Thunderbird that contain fixes for these specific memory corruption issues. Security teams should also implement additional protective measures including network segmentation, web application firewalls, and monitoring for suspicious activities that might indicate exploitation attempts. Regular vulnerability assessments and penetration testing should be conducted to identify potential attack vectors and ensure that all systems remain protected against similar memory safety issues. Additionally, user education regarding safe browsing practices and email handling procedures can help reduce the attack surface for these types of vulnerabilities.