CVE-2005-2705 in Firefox
Summary
by MITRE
Integer overflow in the JavaScript engine in Firefox before 1.0.7 and Mozilla Suite before 1.7.12 might allow remote attackers to execute arbitrary code.
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Analysis
by VulDB Data Team • 06/10/2019
The vulnerability identified as CVE-2005-2705 represents a critical integer overflow condition within the JavaScript engine of Mozilla Firefox and the broader Mozilla Suite. This flaw exists in versions prior to Firefox 1.0.7 and Mozilla Suite 1.7.12, creating a potential pathway for remote code execution attacks. The vulnerability stems from improper handling of integer values during JavaScript processing, specifically when dealing with array operations and memory allocation. When malicious JavaScript code attempts to create arrays with excessively large dimensions, the integer overflow can cause unpredictable behavior in the memory management system of the browser.
The technical exploitation of this vulnerability occurs through crafted JavaScript code that manipulates array sizes beyond the maximum representable integer value. When the JavaScript engine processes these oversized array operations, the integer overflow corrupts memory structures and can lead to memory corruption that attackers can leverage to execute arbitrary code. This type of vulnerability falls under CWE-190, which specifically addresses integer overflow conditions, and represents a classic example of how improper input validation can create security weaknesses in software applications. The attack vector is particularly dangerous because it requires no user interaction beyond visiting a malicious website, making it a prime candidate for drive-by download attacks and other automated exploitation techniques.
The operational impact of this vulnerability extends beyond simple code execution, as it can compromise the entire browser environment and potentially the underlying operating system. Attackers can exploit this flaw to gain unauthorized access to user data, install malware, or establish persistent backdoors on affected systems. The vulnerability's presence in widely used browsers like Firefox and the Mozilla Suite meant that a vast number of users were potentially exposed to this threat, particularly given the prevalence of web-based attacks during that era. Organizations and individuals relying on these browser versions faced significant risk, as the attack could be delivered through any web page containing malicious JavaScript code.
Mitigation strategies for CVE-2005-2705 primarily involve immediate patching of affected browser versions to the secure releases mentioned in the advisory. System administrators should prioritize updating all instances of Firefox and Mozilla Suite to versions 1.0.7 and 1.7.12 respectively, as these releases contain the necessary fixes for the integer overflow condition. Additional protective measures include implementing browser security policies that restrict JavaScript execution, deploying web application firewalls to filter malicious content, and educating users about the risks of visiting untrusted websites. The vulnerability also highlights the importance of proper input validation and integer handling in software development, aligning with ATT&CK technique T1059.007 for JavaScript-based attacks and emphasizing the need for robust memory safety practices in browser engine development. Organizations should also consider implementing network monitoring solutions to detect anomalous JavaScript behavior that might indicate exploitation attempts, as this vulnerability represents a common target for automated exploit frameworks and advanced persistent threat actors.