CVE-2017-0037 is a high-severity vulnerability found in Microsoft Edge and Internet Explorer. It stems from a type confusion issue in the Layout::MultiColumnBoxBuilder::HandleColumnBreakOnColumnSpanningElement function within mshtml.dll. This vulnerability allows remote attackers to execute arbitrary code through crafted Cascading Style Sheets (CSS) token sequences coupled with malicious JavaScript code manipulating a TH element. Given the nature of this flaw, the risk to organizations includes potential unauthorized access and system compromise.
The CVSS score for this vulnerability is 8.1, placing it in the high-severity category. The attack vector is network-based, with a high attack complexity and no required privileges or user interaction for exploitation. This indicates that attackers could exploit this vulnerability remotely, making it critical for organizations to take immediate action.
As of now, this vulnerability is actively tracked in the Known Exploited Vulnerabilities (KEV) catalog, emphasizing its significance in the current threat landscape. Organizations should prioritize patching this vulnerability to prevent potential exploitations.
Therefore, organizations must address this vulnerability as part of their immediate patch management strategy to mitigate risks associated with potential exploitation.
Vulnerability Details
The official description of CVE-2017-0037 highlights that it affects Microsoft Internet Explorer 10 and 11, as well as Microsoft Edge. The vulnerability allows for remote code execution facilitated by crafted CSS and JavaScript vectors that exploit the type confusion in mshtml.dll. The publication date of this vulnerability is February 26, 2017, and it has been analyzed extensively since.
CWE-843 is the relevant Common Weakness Enumeration identifier associated with this vulnerability, illustrating the potential for exploitation through mismanaged data.
Technical Analysis
The root cause of CVE-2017-0037 is a type confusion issue, which occurs when an application misinterprets the type of an object. In this case, the Layout::MultiColumnBoxBuilder::HandleColumnBreakOnColumnSpanningElement function fails to properly handle certain Cascading Style Sheets (CSS) properties leading to arbitrary code execution.
The attack vector is network-based, meaning an attacker can exploit the vulnerability without needing to be in close proximity to the target. Attack complexity is classified as high, indicating that the exploitation requires specific conditions to be successful. Importantly, no privileges are required for exploitation, and user interaction is not necessary, making this vulnerability particularly dangerous.
Risk & Impact Analysis
The real-world risk posed by CVE-2017-0037 is significant, as successful exploitation could lead to complete control over affected systems. The high CVSS score reflects the serious implications for confidentiality, integrity, and availability, all rated high due to the nature of remote code execution vulnerabilities.
With the vulnerability actively tracked in the KEV catalog, organizations are urged to prioritize it in their patch management cycles. Failure to address this vulnerability could expose organizations to severe security breaches.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | Yes |
Actively Exploited | Yes |
Ransomware Use | No |
Affected Versions
The affected versions include Microsoft Edge and Internet Explorer 11. Specific configurations that are vulnerable include various versions of Microsoft Edge, and Internet Explorer running on Windows 10 and other Microsoft operating systems. All versions prior to vendor patch are potentially affected.
Mitigation & Remediation
Organizations must apply updates for Microsoft Edge and Internet Explorer as per vendor instructions. Ensuring all systems are updated to the latest versions is crucial in mitigating the risks associated with CVE-2017-0037. In addition to patching, organizations should implement configuration hardening practices and monitor for any unusual behavior on their networks.
For further guidance, organizations can explore our penetration testing methodology to ensure comprehensive security assessments.
Detection Guidance
Organizations should monitor logs for any indicators of exploitation related to CVE-2017-0037. Behavioral anomalies that deviate from normal patterns, such as unauthorized access attempts or unusual network traffic, may indicate exploitation attempts. Implementing network signatures to detect known attack patterns can further enhance detection capabilities.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2017-0037 lies in highlighting the persistent vulnerabilities within widely-used software like Microsoft Edge and Internet Explorer. This case underscores the importance of timely updates and proactive vulnerability management to mitigate potential threats. Security teams should take lessons from this incident to enhance their defensive strategies against similar vulnerabilities.
For strategic defensive takeaways, organizations should consider integrating continuous security assessments into their operational framework. Regularly reviewing and updating security measures can help prevent the exploitation of vulnerabilities such as CVE-2017-0037.
For further reading on vulnerability management, organizations are encouraged to review our resources on vulnerability management programs and the importance of proactive security testing.
Additionally, exploring our penetration testing reports guide can provide insights into effective security assessments.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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