CVE-2024-10466 in Thunderbird
Summary
by MITRE • 10/29/2024
By sending a specially crafted push message, a remote server could have hung the parent process, causing the browser to become unresponsive. This vulnerability affects Firefox < 132, Firefox ESR < 128.4, Thunderbird < 128.4, and Thunderbird < 132.
Be aware that VulDB is the high quality source for vulnerability data.
Analysis
by VulDB Data Team • 03/02/2025
This vulnerability represents a critical denial of service condition that exploits a flaw in how Mozilla Firefox and Thunderbird handle push notifications. The issue occurs when a remote attacker crafts a malicious push message that triggers an indefinite hang in the parent browser process, effectively rendering the application unresponsive and requiring manual intervention to restore functionality. The vulnerability specifically targets the handling of push notification messages within the browser's messaging infrastructure, creating a scenario where legitimate user interaction becomes impossible until the affected process is terminated or restarted.
The technical implementation of this flaw involves manipulation of the push notification delivery mechanism in the browser's underlying architecture. When a specially crafted push message is received, it appears to cause the parent process to enter a state where it cannot properly process subsequent messages or maintain normal operation. This behavior stems from improper handling of notification data structures or message parsing routines within the browser's notification subsystem. The vulnerability demonstrates a classic race condition or infinite loop scenario in the message processing pipeline, where the system becomes trapped in a state that prevents normal execution flow.
The operational impact of this vulnerability extends beyond simple browser unresponsiveness to encompass broader security implications for end users and system administrators. Affected users may experience complete loss of browser functionality requiring application restart, potentially leading to productivity loss and increased support burden. Organizations relying on these browsers for business operations face potential disruption from this denial of service condition, particularly in environments where automatic updates may not be immediately deployed. The vulnerability affects multiple Mozilla products simultaneously, indicating a systemic issue within the notification handling codebase that requires coordinated patching across different software variants.
Mitigation strategies should focus on immediate deployment of available security patches from Mozilla, as well as implementing network-level controls to restrict push notification sources until patches are applied. Organizations should consider monitoring for suspicious push notification patterns and implementing temporary disablement of push notification features for affected applications. The vulnerability aligns with CWE-400 vulnerability class related to resource exhaustion and may be categorized under ATT&CK technique T1499 for denial of service attacks. Security teams should also implement process monitoring to detect hanging browser processes and establish incident response procedures for rapid recovery from such events, particularly in environments where browser availability is critical for business operations.