CVE-2009-3982 in Firefox
Summary
by MITRE
Multiple unspecified vulnerabilities in the JavaScript engine in Mozilla Firefox 3.5.x before 3.5.6, SeaMonkey before 2.0.1, and Thunderbird 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 • 08/30/2021
The vulnerability identified as CVE-2009-3982 represents a critical security flaw affecting multiple Mozilla products including Firefox 3.5.x versions prior to 3.5.6, SeaMonkey versions before 2.0.1, and Thunderbird applications. This issue resides within the JavaScript engine component that forms the core execution environment for web content and extensions. The vulnerabilities are classified as unspecified, indicating that the exact technical details of the underlying flaws were not fully disclosed in the initial reporting, though their impact was clearly demonstrated through potential for remote code execution and system instability.
The technical nature of this vulnerability stems from memory corruption issues within the JavaScript engine's handling of certain code patterns or data structures. When exploited, these flaws can cause the affected applications to crash or behave unpredictably, leading to denial of service conditions. More critically, the vulnerability's potential for arbitrary code execution places it within the ATT&CK framework's execution category under technique T1059.007 for JavaScript execution, making it particularly dangerous for attackers seeking to compromise user systems. The memory corruption aspects align with CWE-125, which describes out-of-bounds read conditions, and CWE-787, which covers out-of-bounds writes that can result in memory corruption.
Operationally, this vulnerability presents significant risks to organizations and individual users who rely on these Mozilla applications for daily computing tasks. The remote exploit capability means that attackers can potentially compromise systems without requiring physical access or user interaction beyond visiting malicious websites. The impact extends beyond simple application crashes to potentially full system compromise, especially when combined with other attack vectors. Users who regularly browse the internet or receive email through Thunderbird are particularly at risk, as these applications process untrusted content from external sources. The vulnerability's presence in multiple Mozilla products indicates a fundamental flaw in the JavaScript engine architecture that affects a wide user base.
Mitigation strategies for CVE-2009-3982 primarily focus on immediate software updates and patches provided by Mozilla. Organizations should prioritize updating all affected Mozilla products to their latest secure versions, specifically Firefox 3.5.6, SeaMonkey 2.0.1, and corresponding Thunderbird releases. Network administrators should implement security measures such as web content filtering and browser hardening policies to reduce exposure. The vulnerability's classification as a memory corruption issue suggests that implementing memory protection mechanisms and stack canaries could provide additional defense in depth. From a compliance standpoint, this vulnerability would be relevant to security frameworks requiring timely patch management and vulnerability remediation as outlined in standards such as NIST SP 800-128 and ISO/IEC 27001. Regular security assessments and penetration testing should be conducted to verify that updates have been properly applied and that no other related vulnerabilities exist in the environment.