CVE-2016-1930 in Firefox
Summary
by MITRE
Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 44.0 and Firefox ESR 38.x before 38.6 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 • 10/23/2024
The vulnerability identified as CVE-2016-1930 represents a critical security flaw within the browser engine of Mozilla Firefox, affecting versions prior to 44.0 and Firefox ESR 38.x prior to 38.6. This issue falls under the category of unspecified vulnerabilities, indicating that the exact nature of the flaws within the browser engine remains partially obscured from the public disclosure. The affected browser engine components are responsible for rendering web content and executing JavaScript, making them prime targets for exploitation. The vulnerability's classification as affecting the browser engine rather than specific add-ons or extensions suggests that the core rendering and execution mechanisms are compromised, potentially allowing attackers to manipulate fundamental browser operations. Security researchers have categorized this as a remote code execution vulnerability, meaning that attackers can exploit these flaws without requiring local access to the target system. The attack surface is broad as these vulnerabilities are present in the core browser functionality that processes web content from untrusted sources.
The technical exploitation of CVE-2016-1930 manifests through memory corruption issues that can lead to application crashes or potentially enable arbitrary code execution. Memory corruption vulnerabilities typically arise from improper handling of memory allocation, deallocation, or access patterns within software components. In the context of web browsers, such flaws often stem from insufficient bounds checking in JavaScript engines or rendering components that process untrusted data from web pages. The vulnerability's impact extends beyond simple denial of service as it may allow attackers to execute malicious code with the privileges of the browser process. This represents a significant escalation from basic service disruption to potential system compromise, particularly when combined with other exploitation techniques. The unspecified nature of the vulnerability vectors suggests that multiple attack paths exist within the browser engine, making comprehensive protection challenging. These flaws are particularly dangerous because they can be triggered through normal web browsing activities, requiring no special privileges or user interaction beyond visiting a malicious website.
The operational impact of CVE-2016-1930 is substantial for organizations and individuals relying on Firefox as their primary web browser. The vulnerability creates a persistent risk of system compromise, as attackers can leverage these flaws to gain unauthorized access to affected systems. Organizations using Firefox in enterprise environments face heightened security risks, particularly when employees visit malicious websites or are targeted through spear-phishing campaigns. The potential for arbitrary code execution means that attackers could install malware, steal sensitive data, or establish persistent backdoors on compromised systems. The vulnerability affects both regular Firefox releases and the Extended Support Release (ESR) versions, indicating that organizations using long-term support versions are not immune to these threats. This creates a significant challenge for IT security teams who must balance the need for security updates with the stability requirements of enterprise systems. The remote nature of the attack vector means that protection is not sufficient at the network perimeter, as attackers can exploit these vulnerabilities from anywhere on the internet.
Mitigation strategies for CVE-2016-1930 primarily focus on immediate remediation through software updates. Organizations should prioritize upgrading to Firefox version 44.0 or later, or Firefox ESR 38.6 and newer, to eliminate the vulnerability. Security patches for this vulnerability are available from Mozilla and should be deployed as soon as possible within organizational update schedules. Network administrators should consider implementing additional security controls such as web application firewalls and content filtering solutions to provide defense-in-depth. Browser hardening techniques including disabling unnecessary browser features, implementing strict content security policies, and using sandboxing mechanisms can reduce the attack surface. Security teams should monitor for exploitation attempts through network traffic analysis and endpoint detection systems. The vulnerability's classification under CWE-119 (Improper Access to Memory) and CWE-121 (Stack-based Buffer Overflow) indicates that memory safety issues are the primary concern. From an ATT&CK framework perspective, this vulnerability maps to techniques involving privilege escalation and persistent threat capabilities. Regular security assessments and vulnerability scanning should include verification of Firefox versions to ensure compliance with security baselines. Organizations should also implement incident response procedures specifically addressing potential exploitation of browser engine vulnerabilities to minimize impact in case of successful attacks.