CVE-2017-8755 in Edge
Summary
by MITRE
Microsoft Edge in Microsoft Windows 10 1511, 1607, 1703, and Windows Server 2016 allows an attacker to execute arbitrary code in the context of the current user, due to the way that the scripting engine handles objects in memory in Microsoft Edge, aka "Scripting Engine Memory Corruption Vulnerability". This CVE ID is unique from CVE-2017-8649, CVE-2017-8649, CVE-2017-8660, CVE-2017-8729, CVE-2017-8738, CVE-2017-8740, CVE-2017-8741, CVE-2017-8748, CVE-2017-8752, CVE-2017-8753, CVE-2017-8756, and CVE-2017-11764.
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Analysis
by VulDB Data Team • 08/22/2024
This vulnerability represents a critical memory corruption issue within Microsoft Edge's scripting engine that affects multiple Windows 10 versions and Windows Server 2016. The flaw manifests when the scripting engine improperly handles objects in memory, creating opportunities for attackers to execute arbitrary code with the privileges of the current user. This type of vulnerability falls under the CWE-125 vulnerability category, which specifically addresses out-of-bounds read conditions that can lead to memory corruption and potential code execution. The vulnerability is particularly concerning as it operates within the context of the browser's JavaScript engine, making it a prime target for exploit development.
The technical exploitation of this vulnerability involves manipulating memory objects in ways that cause the scripting engine to behave unpredictably, potentially leading to memory corruption that attackers can leverage to gain control over the execution flow. This aligns with the ATT&CK framework's technique T1059.007, which covers script-based execution through web browsers. Attackers typically craft malicious web pages or HTML content that triggers the specific memory handling flaw when processed by Edge, enabling them to inject and execute malicious code directly within the user's session context. The vulnerability's impact is significant because it requires no privileged access to exploit, making it particularly dangerous in targeted attacks against end users.
The operational impact of this vulnerability extends beyond simple code execution to encompass potential full system compromise when combined with other attack vectors or when users have elevated privileges. The fact that this vulnerability affects multiple Windows 10 versions including 1511, 1607, and 1703, as well as Windows Server 2016, means that organizations with diverse Windows environments face widespread exposure. Security professionals must consider this vulnerability as part of broader attack surface management strategies, particularly in environments where users frequently browse the internet or encounter untrusted web content. The vulnerability's classification as a memory corruption issue also means that traditional security controls may not provide adequate protection, as the attack exploits fundamental memory handling mechanisms within the browser itself.
Mitigation strategies for this vulnerability should focus on immediate patch deployment through Microsoft's regular security updates, as this represents a critical security issue that requires prompt remediation. Organizations should also implement additional browser hardening measures including disabling unnecessary JavaScript features, implementing strict content security policies, and using browser isolation techniques. Network-based mitigations such as web application firewalls and DNS filtering can provide additional layers of protection, though these should complement rather than replace the necessary patching procedures. The vulnerability's nature also suggests that regular security awareness training for users about avoiding suspicious web content and maintaining updated software installations remains crucial. Microsoft's security response to this vulnerability involved releasing patches that addressed the specific memory handling issues within Edge's scripting engine, with the company recommending immediate installation of these updates to protect against exploitation attempts.