CVE-2015-4500 in Firefox
Summary
by MITRE
Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 41.0 and Firefox ESR 38.x before 38.3 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 • 10/22/2024
The vulnerability identified as CVE-2015-4500 represents a critical security flaw within the browser engine of Mozilla Firefox versions prior to 41.0 and Firefox ESR 38.x versions prior to 38.3. This issue encompasses multiple unspecified vulnerabilities that collectively create a significant risk landscape for affected users. The vulnerabilities reside in the core browser engine responsible for rendering web content and processing user interactions, making them particularly dangerous as they can be exploited through normal web browsing activities without requiring any special privileges or user interaction beyond visiting a malicious website.
These unspecified vulnerabilities demonstrate the inherent complexity of modern browser engines where multiple code paths and components interact in sophisticated ways. The affected browser engine components likely include memory management systems, parsing mechanisms for web content, and rendering pipelines that process html css and javascript. The unspecified nature of these vulnerabilities suggests that attackers can exploit various code paths within the browser engine, potentially targeting different memory corruption patterns or execution flow manipulations that lead to either denial of service conditions or arbitrary code execution capabilities. Such broad attack surface characteristics align with common patterns found in browser engine vulnerabilities that are classified under CWE-119 Improper Access to Memory and CWE-121 Stack-based Buffer Overflow.
The operational impact of CVE-2015-4500 extends beyond simple application crashes to potentially enable remote code execution, representing a severe threat to user security and system integrity. When exploited, these vulnerabilities can cause Firefox to crash unexpectedly, leading to denial of service for the affected user, or more critically, allow attackers to execute malicious code with the privileges of the browser process. This capability enables attackers to perform various malicious activities including but not limited to data exfiltration, system compromise, or deployment of additional malware. The remote exploitation aspect means that users do not need to interact with suspicious files or download malicious content directly - simply visiting a compromised website can trigger these vulnerabilities, making them particularly dangerous in the context of modern web browsing.
Security researchers and threat actors have mapped these vulnerabilities to various tactics within the attack lifecycle, particularly those related to initial access and execution phases of the kill chain. The ability to cause memory corruption through web-based attacks aligns with techniques described in the attack pattern taxonomy under MITRE ATT&CK framework, specifically targeting the execution and privilege escalation domains. Organizations and individual users face significant risk when operating vulnerable versions of Firefox, as these vulnerabilities can be leveraged in phishing campaigns, drive-by download attacks, or other web-based exploitation scenarios. The impact is amplified by the widespread use of Firefox across different platforms and user demographics, making successful exploitation potentially devastating at scale.
The recommended mitigation strategy for CVE-2015-4500 involves immediate upgrade to Firefox 41.0 or Firefox ESR 38.3 and subsequent versions. This upgrade process should be implemented across all affected systems within an organization's infrastructure to ensure comprehensive protection. Additional protective measures include implementing web application firewalls, deploying content security policies, and utilizing browser hardening techniques such as disabling unnecessary plugins and features. Security administrators should also consider implementing monitoring solutions to detect potential exploitation attempts and maintain updated threat intelligence feeds to identify related attack patterns and indicators of compromise. The vulnerability serves as a reminder of the importance of maintaining current security patches and the critical role that timely software updates play in protecting against known vulnerabilities.