CVE-2018-8236 in Edge
Summary
by MITRE
A remote code execution vulnerability exists when Microsoft Edge improperly accesses objects in memory, aka "Microsoft Edge Memory Corruption Vulnerability." This affects Microsoft Edge. This CVE ID is unique from CVE-2018-8110, CVE-2018-8111.
Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.
Analysis
by VulDB Data Team • 03/22/2023
The vulnerability identified as CVE-2018-8236 represents a critical memory corruption flaw within Microsoft Edge browser that enables remote code execution under specific conditions. This vulnerability arises from improper handling of memory objects during browser operations, creating potential attack vectors for malicious actors to compromise systems. The flaw specifically impacts Microsoft Edge versions that are vulnerable to memory corruption during object manipulation, making it particularly dangerous in enterprise environments where browser-based attacks are common.
The technical exploitation of this vulnerability occurs when Edge encounters malformed or malicious content that triggers improper memory access patterns. This memory corruption can lead to arbitrary code execution with the privileges of the Edge process, potentially allowing attackers to bypass security controls and gain unauthorized access to affected systems. The vulnerability is classified under CWE-125 as an out-of-bounds read condition, where the browser attempts to access memory locations beyond allocated boundaries. This type of flaw is particularly insidious because it can be triggered through web browsing activities without requiring user interaction beyond visiting a malicious website.
From an operational standpoint, the impact of CVE-2018-8236 extends beyond individual system compromise to potentially enable broader network infiltration. Attackers can leverage this vulnerability to establish persistent access, deploy additional malware, or escalate privileges within compromised environments. The vulnerability's remote exploitation capability means that attackers can target users from anywhere on the internet, making it particularly dangerous for organizations that do not maintain strict network segmentation or monitoring controls. Security professionals should note that this vulnerability shares characteristics with other memory corruption attacks that fall under the ATT&CK technique T1059.001 for command and scripting interpreter, as successful exploitation can enable attackers to execute malicious commands within the compromised browser environment.
Organizations should implement immediate mitigations including applying the relevant Microsoft security updates, implementing browser hardening configurations, and deploying network monitoring solutions to detect potential exploitation attempts. The vulnerability demonstrates the importance of keeping browser software current and maintaining comprehensive patch management processes. Additionally, implementing content security policies and restricting browser access to trusted domains can help reduce the attack surface for similar memory corruption vulnerabilities. Security teams should also consider implementing sandboxing mechanisms and monitoring for unusual browser behavior that might indicate exploitation attempts.