CVE-2017-8756 in Edge
Summary
by MITRE
Microsoft Edge in Microsoft Windows 10 Gold, 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 Microsoft Edge accesses objects in memory, aka "Scripting Engine Memory Corruption Vulnerability". This CVE ID is unique from 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-2017-8755, and CVE-2017-11764.
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Analysis
by VulDB Data Team • 08/22/2024
This vulnerability resides within Microsoft Edge's scripting engine, specifically targeting the way the browser handles memory operations during web page rendering and execution. The flaw manifests as a memory corruption issue that occurs when Edge processes certain objects in memory, creating an opportunity for attackers to execute arbitrary code with the privileges of the currently logged-in user. This particular vulnerability affects multiple Windows 10 versions including Gold, 1511, 1607, and 1703, as well as Windows Server 2016, making it a widespread concern across various Microsoft operating system deployments.
The technical nature of this vulnerability aligns with CWE-125, which describes out-of-bounds read conditions that can lead to memory corruption and arbitrary code execution. The flaw occurs during the normal operation of Edge's JavaScript engine, where improper memory management allows attackers to craft malicious web content that triggers buffer overflows or memory access violations. This type of vulnerability typically arises from insufficient bounds checking or improper handling of memory allocations during object manipulation within the browser's rendering engine. The vulnerability is classified as a remote code execution flaw because an attacker can exploit it through malicious web content without requiring local system access.
From an operational standpoint, this vulnerability presents significant risk to organizations as it enables attackers to gain unauthorized code execution capabilities within user contexts. Successful exploitation could allow threat actors to install malware, steal sensitive data, or establish persistent access to compromised systems. The attack vector requires only that a user visits a malicious website or opens a specially crafted email attachment containing malicious web content, making it particularly dangerous in phishing campaigns or drive-by download scenarios. The impact extends beyond individual user compromise to potentially enable lateral movement within networks, as the executed code operates with the user's privileges and can access local resources and network shares.
Organizations should implement multiple layers of defense to mitigate this vulnerability, beginning with immediate deployment of Microsoft's security patches and updates. System administrators should also consider implementing browser isolation techniques, network-based intrusion detection systems, and web application firewalls to detect and block malicious traffic targeting this vulnerability. Additionally, user education programs should emphasize the importance of avoiding untrusted websites and suspicious email attachments. The ATT&CK framework categorizes this vulnerability under T1059 for command and scripting interpreter, as attackers would likely use the compromised browser to execute malicious scripts or commands. Regular security assessments and vulnerability scanning should be conducted to identify systems running affected versions of Windows 10 and ensure timely patch deployment, as this vulnerability represents a critical security risk that requires immediate attention from security teams.