CVE-2012-0467 in Firefox
Summary
by MITRE
Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox 4.x through 11.0, Firefox ESR 10.x before 10.0.4, Thunderbird 5.0 through 11.0, Thunderbird ESR 10.x before 10.0.4, and SeaMonkey before 2.9 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unknown vectors.
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Analysis
by VulDB Data Team • 10/21/2024
The vulnerability identified as CVE-2012-0467 represents a critical security flaw affecting multiple Mozilla products including Firefox, Thunderbird, and SeaMonkey across several versions. This vulnerability resides within the browser engine component that processes web content and handles various data types, making it particularly dangerous as it could be exploited through routine web browsing activities. The affected versions span from Firefox 4.x through 11.0, with Firefox ESR 10.x before 10.0.4 also impacted, alongside Thunderbird versions 5.0 through 11.0 and their respective ESR counterparts, plus SeaMonkey before 2.9. The unspecified nature of the exact vulnerability vectors indicates that multiple attack surfaces within the browser engine were compromised, creating a broad attack surface for potential exploitation.
The technical flaw manifests as memory corruption issues that can lead to application crashes or potentially more severe arbitrary code execution. Memory corruption vulnerabilities typically occur when applications fail to properly validate or handle memory operations, allowing attackers to manipulate memory layout or overwrite critical data structures. These vulnerabilities often stem from buffer overflows, use-after-free conditions, or other memory management errors that can be triggered through malformed input data. The browser engine's handling of various web content types including HTML, JavaScript, and multimedia elements creates multiple potential entry points for exploitation. The vulnerability's classification as affecting the browser engine rather than user-facing components means that exploitation could occur simply by visiting a malicious website or opening a specially crafted email message.
The operational impact of this vulnerability extends beyond simple denial of service scenarios to potentially enable complete system compromise. When memory corruption leads to arbitrary code execution, attackers can gain full control over affected systems, potentially installing malware, exfiltrating data, or using the compromised system as a launch point for further attacks. The vulnerability's presence in both desktop browsers and email clients creates multiple attack vectors since users frequently interact with both applications. The widespread adoption of these Mozilla products means that a successful exploitation could affect thousands of systems across different organizations. The lack of specific details about the exact exploit vectors makes this vulnerability particularly concerning as it could be leveraged in zero-day attacks before security researchers fully understand the scope of the issue.
Mitigation strategies for CVE-2012-0467 primarily focus on immediate patching and version updates to address the underlying memory corruption issues. Organizations should prioritize updating all affected Mozilla products to their latest secure versions, particularly noting the specific version requirements for Firefox ESR 10.0.4, Thunderbird 10.0.4, and SeaMonkey 2.9. Network-level protections such as web application firewalls and content filtering systems can provide additional defense-in-depth measures while patches are deployed. Browser hardening techniques including disabling unnecessary plugins, implementing strict content security policies, and using sandboxing mechanisms can reduce the potential impact of successful exploitation attempts. Security monitoring should focus on detecting unusual memory usage patterns or application crashes that might indicate exploitation attempts, with particular attention to network traffic patterns associated with malicious websites. The vulnerability's classification under CWE categories related to memory safety issues emphasizes the importance of proper input validation and memory management practices in browser engine development, aligning with ATT&CK techniques focused on privilege escalation and code execution through memory corruption vulnerabilities.