CVE-2018-8373 identifies a high-severity remote code execution vulnerability in Microsoft Internet Explorer, specifically impacting versions 9, 10, and 11. This vulnerability allows attackers to execute arbitrary code on the affected system, leading to potential unauthorized access and data compromise. Given the nature of this vulnerability and its critical impact, it is essential for organizations to prioritize remediation efforts.
The severity of this vulnerability is classified as high, with a CVSS score of 7.5, indicating that it poses a significant risk to organizations. The potential for exploitation is heightened due to the attack vector being network-based and the requirement for user interaction, which can lead to widespread compromises if users are deceived into executing malicious scripts.
Organizations should prioritize patching immediately to mitigate risks associated with this vulnerability. With known exploitation details noted in the CISA's Known Exploited Vulnerabilities Catalog, it is imperative that security teams remain vigilant.
Given its high profile and critical nature, timely actions to address CVE-2018-8373 are essential. Organizations should ensure that their systems are updated to the latest security patches to defend against potential attacks targeting this vulnerability.
Vulnerability Details
A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Internet Explorer, also known as the "Scripting Engine Memory Corruption Vulnerability." This affects Internet Explorer 9, 10, and 11. The vulnerability is classified under CWE-787, indicating a memory corruption issue.
The CVSS score for this vulnerability is 7.5, marking it as high severity. The attack vector is network-based, and the attack complexity is high, requiring user interaction. The confidentiality, integrity, and availability impacts are all rated as high, indicating a severe risk should exploitation occur.
Technical Analysis
The root cause of CVE-2018-8373 lies in the improper handling of objects by the scripting engine, which can allow attackers to manipulate the memory. This can lead to arbitrary code execution on the affected system, with the attacker needing to trick the user into executing a malicious script. The attack vector is network-based, making it accessible through any system connected to the internet.
The attack complexity is considered high, as it requires user interaction, meaning that users must be deceived into running the exploit. While the privileges required are none, successful exploitation can lead to complete control over the affected system, impacting confidentiality, integrity, and availability.
Organizations should implement strict security measures such as user training, web filtering, and monitoring for unusual system behavior to mitigate the risk of exploitation.
Risk & Impact Analysis
The real-world risk associated with CVE-2018-8373 is significant, particularly for organizations using Internet Explorer as a primary web browser. The potential for widespread exploitation is high due to the nature of the vulnerability and the fact that user interaction is required.
Organizations must consider the blast radius of this vulnerability, as successful exploitation could lead to unauthorized access to sensitive information, data loss, and system compromise. Given the high CVSS score and its inclusion in the KEV catalog, this vulnerability should be treated with utmost urgency.
Organizations should address this vulnerability in their priority patch cycle, ensuring that all affected systems receive the necessary updates. Regular vulnerability assessments and penetration testing can also help identify weaknesses and ensure robust defenses.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | Yes |
Ransomware Use | No |
Affected Versions
The affected products include Internet Explorer 9, 10, and 11. Organizations should ensure that all instances of these versions are updated to the latest security patches.
Mitigation & Remediation
Organizations should apply updates per vendor instructions found in the Microsoft Security Response Center to address this vulnerability. Additionally, organizations should consider implementing network controls to limit exposure and monitor for unusual activity that may indicate exploitation attempts.
Detection Guidance
Monitoring logs for unusual scripting activity and user behavior can help detect exploitation attempts. Behavioral anomalies related to Internet Explorer should be flagged for further analysis.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2018-8373 highlights the ongoing risks associated with legacy software. Organizations using Internet Explorer should be aware of the potential for similar vulnerabilities arising from outdated software practices.
Security teams must remain vigilant and proactive by conducting regular security assessments. Adopting a robust vulnerability management program and engaging in penetration testing are essential for identifying and addressing vulnerabilities before they can be exploited.
In conclusion, organizations should take immediate action to address CVE-2018-8373 by applying the necessary updates and enhancing their security posture.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
.webp)