CVE-2011-2364 in Firefox
Summary
by MITRE
Unspecified vulnerability in the browser engine in Mozilla Firefox 3.6.x before 3.6.18 and Thunderbird before 3.1.11 allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unknown vectors, a different vulnerability than CVE-2011-2365.
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Analysis
by VulDB Data Team • 11/13/2021
The vulnerability identified as CVE-2011-2364 represents a critical security flaw within the browser engine of Mozilla Firefox versions 3.6.x prior to 3.6.18 and Thunderbird versions before 3.1.11. This unspecified vulnerability operates at the core engine level of these applications, creating a significant risk for remote attackers who can exploit it through various unknown vectors. The flaw manifests as a memory corruption issue that can lead to application crashes or potentially allow for arbitrary code execution, making it particularly dangerous in the context of web browser security where users frequently encounter untrusted content.
The technical nature of this vulnerability lies within the browser engine's handling of memory management and data processing, where improper memory handling or buffer overflows could occur when processing maliciously crafted web content. Such memory corruption issues typically arise from insufficient input validation or improper memory allocation/deallocation routines within the rendering engine. The vulnerability's classification as unspecified suggests that the exact technical mechanism remains partially obscured, though the impact clearly demonstrates that attackers can manipulate the application's memory state through remote access methods. This type of flaw often corresponds to CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer or CWE-787 Out-of-bounds Write, both of which are fundamental memory safety issues that can lead to system compromise.
The operational impact of CVE-2011-2364 extends beyond simple denial of service conditions, as the potential for arbitrary code execution creates a pathway for attackers to gain control over affected systems. When a remote attacker successfully exploits this vulnerability, they can cause applications to crash or become unstable, but more critically, they can potentially inject and execute malicious code within the context of the browser process. This creates a significant risk for users who may unknowingly visit compromised websites or receive malicious email content in Thunderbird. The vulnerability's presence in both Firefox and Thunderbird applications increases the attack surface considerably, as these are widely used applications that process untrusted content from various sources.
Mitigation strategies for this vulnerability require immediate patching of affected software versions, as the window of exposure for this flaw is substantial. Organizations should prioritize updating to Firefox 3.6.18 or later and Thunderbird 3.1.11 or later versions that contain the necessary security fixes. Additionally, implementing network-level protections such as web application firewalls and content filtering systems can provide additional layers of defense against exploitation attempts. The vulnerability's characteristics align with ATT&CK technique T1203 Exploitation for Client Execution, which describes how adversaries leverage software vulnerabilities to execute malicious code on compromised systems. Security teams should also consider implementing monitoring solutions that can detect unusual application behavior or memory corruption patterns that may indicate exploitation attempts, as these systems often provide early warning of successful attacks against such memory corruption vulnerabilities.