CVE-2010-3767 in Firefox
Summary
by MITRE
Integer overflow in the NewIdArray function in Mozilla Firefox before 3.5.16 and 3.6.x before 3.6.13, and SeaMonkey before 2.0.11, allows remote attackers to execute arbitrary code via a JavaScript array with many elements.
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Analysis
by VulDB Data Team • 12/08/2024
The vulnerability identified as CVE-2010-3767 represents a critical integer overflow condition affecting Mozilla Firefox and SeaMonkey browser implementations. This flaw exists within the NewIdArray function, which handles JavaScript array creation and management operations. The vulnerability manifests when processing JavaScript arrays containing an excessive number of elements, creating a scenario where integer arithmetic operations exceed their maximum representable values. This condition allows attackers to manipulate memory allocation behaviors through carefully crafted JavaScript code that specifies arrays with an extraordinarily large number of elements.
The technical nature of this vulnerability aligns with CWE-190, which categorizes integer overflow conditions that can lead to memory corruption and arbitrary code execution. When the NewIdArray function processes arrays with maliciously large element counts, the integer overflow causes the system to allocate insufficient memory for the intended array structure. This memory allocation error creates exploitable conditions where attacker-controlled data can overwrite adjacent memory regions, potentially allowing execution of arbitrary code with the privileges of the affected browser process. The vulnerability specifically affects Firefox versions prior to 3.5.16 and 3.6.x versions prior to 3.6.13, along with SeaMonkey versions before 2.0.11, representing a significant portion of the browser ecosystem at the time of discovery.
The operational impact of this vulnerability extends beyond simple code execution, as it enables attackers to bypass security boundaries within the browser environment. Through the use of the ATT&CK framework's technique T1059.007 for JavaScript execution, adversaries can craft malicious web pages that exploit this vulnerability to gain unauthorized access to user systems. The remote exploitation capability means that users need only visit a compromised website to be vulnerable, making this attack vector particularly dangerous for widespread deployment. The integer overflow creates a predictable memory corruption pattern that can be reliably exploited across different operating systems and hardware configurations, as long as the vulnerable browser versions are present.
Mitigation strategies for CVE-2010-3767 primarily focus on immediate version updates and browser security hardening measures. Organizations should prioritize patching affected systems with updated Firefox and SeaMonkey releases that contain the necessary memory management fixes for the NewIdArray function. The vulnerability demonstrates the importance of robust input validation and integer overflow protection in browser JavaScript engines, as highlighted by security best practices in the OWASP Top Ten. Additional defensive measures include implementing content security policies that limit script execution, using sandboxing technologies, and deploying web application firewalls that can detect and block malicious JavaScript patterns. Regular security assessments and vulnerability scanning should be conducted to identify any remaining instances of vulnerable browser versions within enterprise environments, ensuring comprehensive protection against similar integer overflow vulnerabilities that may exist in other browser components or third-party libraries.