CVE-2016-0003 in Edge
Summary
by MITRE
Microsoft Edge allows remote attackers to execute arbitrary code via unspecified vectors, aka "Microsoft Edge Memory Corruption Vulnerability."
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Analysis
by VulDB Data Team • 06/21/2018
The Microsoft Edge memory corruption vulnerability identified as CVE-2016-0003 represents a critical security flaw that enabled remote code execution through unspecified attack vectors within the web browser. This vulnerability specifically affected Microsoft Edge versions prior to the security updates released in January 2016, creating a significant risk for users who were exposed to malicious websites or content. The flaw manifested as a memory corruption issue that could be exploited by attackers to gain unauthorized control over affected systems, making it particularly dangerous in enterprise and consumer environments where Edge was the default browser.
The technical nature of this vulnerability stems from improper handling of memory operations within Edge's rendering engine, which processes web content including HTML, JavaScript, and multimedia elements. Attackers could craft malicious web pages that, when loaded in Edge, would trigger memory corruption conditions that could be leveraged to execute arbitrary code with the privileges of the current user. This type of vulnerability typically involves buffer overflows, use-after-free errors, or other memory management flaws that allow attackers to manipulate program execution flow. The unspecified nature of the vectors suggests that multiple attack surfaces within the browser's architecture could be exploited, making the vulnerability particularly challenging to defend against and patch comprehensively.
The operational impact of this vulnerability was substantial as it affected a significant portion of Microsoft's user base who relied on Edge for web browsing activities. Organizations using Edge as their primary browser faced potential compromise risks when users visited malicious websites or opened compromised email attachments containing web-based exploits. The vulnerability could lead to complete system compromise, allowing attackers to install malware, steal sensitive data, or establish persistent access to affected systems. The remote execution capability meant that attackers did not need physical access to target systems, making this vulnerability particularly dangerous in environments where users frequently accessed untrusted web content.
Mitigation strategies for CVE-2016-0003 required immediate deployment of Microsoft security updates and patches that addressed the underlying memory corruption issues. Organizations should have implemented network-level protections such as web application firewalls and content filtering solutions to block access to known malicious domains. Browser hardening measures including disabling unnecessary features, implementing strict security policies, and using sandboxing techniques could have reduced the attack surface. The vulnerability aligns with CWE-125, which describes "Out-of-bounds Read" conditions that can lead to memory corruption, and follows ATT&CK techniques related to exploitation of browser vulnerabilities and privilege escalation. Regular security assessments and user education about safe browsing practices became essential components of comprehensive defense strategies against this class of vulnerabilities.