CVE-2012-0444 in Firefox
Summary
by MITRE
Mozilla Firefox before 3.6.26 and 4.x through 9.0, Thunderbird before 3.1.18 and 5.0 through 9.0, and SeaMonkey before 2.7 do not properly initialize nsChildView data structures, which allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via a crafted Ogg Vorbis file.
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Analysis
by VulDB Data Team • 03/20/2021
The vulnerability identified as CVE-2012-0444 represents a critical memory corruption flaw affecting multiple Mozilla-based applications including Firefox, Thunderbird, and SeaMonkey. This issue stems from improper initialization of nsChildView data structures within the browser engine, creating exploitable conditions that can be triggered through malicious media content. The vulnerability specifically impacts versions prior to Firefox 3.6.26 and 4.x through 9.0, Thunderbird 3.1.18 and 5.0 through 9.0, and SeaMonkey 2.7, making it a widespread concern across the Mozilla ecosystem during that time period.
The technical flaw manifests when processing Ogg Vorbis audio files, which are commonly used multimedia formats in web applications. When these files are crafted with specific malicious parameters, they trigger the improper initialization of nsChildView structures that are responsible for managing child windows and view components within the browser's rendering engine. This memory management failure creates conditions where attackers can manipulate the application's memory layout, potentially leading to heap corruption that results in application crashes or more severe exploitation opportunities. The vulnerability operates at the intersection of memory management and multimedia processing, exploiting the way the browser handles embedded media content during rendering operations.
The operational impact of CVE-2012-0444 extends beyond simple denial of service conditions to potentially enable remote code execution, making it particularly dangerous for end users. Attackers can craft Ogg Vorbis files that when opened in vulnerable browsers trigger memory corruption, causing unpredictable application behavior. The memory corruption can manifest as crashes that disrupt user sessions, or in more sophisticated attacks, allow adversaries to execute arbitrary code with the privileges of the affected application. This vulnerability directly relates to CWE-125, which describes out-of-bounds read conditions, and CWE-787, which covers out-of-bounds write conditions, both of which are common in memory corruption vulnerabilities. The attack vector aligns with ATT&CK technique T1203, which covers exploitation for execution through the use of malicious media files.
Mitigation strategies for this vulnerability focus primarily on immediate patching and application updates to the affected versions. Users should upgrade to Firefox 3.6.26 or later, Firefox 4.0 through 9.0, Thunderbird 3.1.18 or later, Thunderbird 5.0 through 9.0, and SeaMonkey 2.7 or later to eliminate the risk. Organizations should implement automated patch management systems to ensure all affected applications are updated promptly. Additional protective measures include configuring web browsers to disable automatic playback of media content, implementing content filtering systems to block suspicious Ogg Vorbis files, and monitoring network traffic for potential exploitation attempts. The vulnerability demonstrates the importance of proper memory initialization in multimedia processing components and highlights the need for comprehensive security testing of media handling code within browser engines.