CVE-2016-3351 is a medium-severity information disclosure vulnerability affecting Microsoft Internet Explorer versions 9 through 11 and Microsoft Edge. This vulnerability allows remote attackers to obtain sensitive information via crafted web sites, potentially exposing user data. The CVSS score for this vulnerability is 6.5, indicating a medium level of severity that should not be overlooked.
The risk to organizations includes potential unauthorized access to sensitive data, which can result in significant privacy concerns and reputational damage. Exploitation of this vulnerability can occur through social engineering tactics, where users are tricked into visiting malicious websites.
As of now, the vulnerability does not have any confirmed public exploit available, but it is classified as a known exploited vulnerability within the Known Exploited Vulnerabilities (KEV) catalog. Organizations should prioritize patching this vulnerability immediately to mitigate risks.
Timely remediation is critical, given the high potential for exploitation and the sensitive nature of the information that could be disclosed through this vulnerability. Organizations should ensure that their systems are updated with the latest security patches from Microsoft.
Vulnerability Details
The official description of this vulnerability states that Microsoft Internet Explorer 9 through 11 and Microsoft Edge allow remote attackers to obtain sensitive information via a crafted web site, also known as the 'Microsoft Browser Information Disclosure Vulnerability.' The vulnerability is classified as CWE-200, which pertains to information exposure.
The CVSS 3.1 score of 6.5 is characterized by a low attack complexity, no privileges required, and the necessity for user interaction. This indicates that while it is not overly complex to exploit, it does require some level of user participation, making it necessary for organizations to educate users about the risks.
The vulnerability was published on September 14, 2016, and remains relevant today due to the continued use of affected products. Organizations using Microsoft Internet Explorer or Edge should take immediate action to remediate this vulnerability.
Technical Analysis
The root cause of CVE-2016-3351 lies in the improper handling of objects in memory by certain functions in Internet Explorer and Edge. The attack vector is primarily network-based, where an attacker can host a malicious website designed to exploit this vulnerability.
With low attack complexity, the exploitation does not require any special privileges. However, user interaction is required, as the user must visit the malicious site. This combination makes the vulnerability particularly dangerous, as it relies on user behavior.
The impact on confidentiality is rated as high, as sensitive information can be disclosed to attackers, while integrity and availability impacts are rated as none. Organizations need to monitor their users' web activities and educate them on potential threats.
Risk & Impact Analysis
The real-world deployment risk associated with CVE-2016-3351 is significant, especially for organizations that continue to use Internet Explorer and Edge. Given the nature of the vulnerability, attackers may leverage it to gain access to sensitive files on users' systems.
The blast radius potential of this vulnerability is considerable, as it affects multiple versions of widely used web browsers. Organizations should assess their exposure and prioritize their patch cycles accordingly.
Urgency for remediation is critical, given that this vulnerability has been confirmed as exploited in the wild. Organizations should act swiftly to apply the necessary updates and restrict access to vulnerable systems.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | Yes |
Ransomware Use | Yes |
Affected Versions
The following versions are affected by CVE-2016-3351: Microsoft Internet Explorer 9, 10, and 11, as well as Microsoft Edge. Organizations should assume that all versions prior to vendor patch are vulnerable.
Mitigation & Remediation
Organizations are advised to apply the security updates provided by Microsoft as part of their patch management processes. For additional guidance on effective remediation strategies, organizations may consider leveraging penetration testing to assess their security posture.
In addition to applying patches, organizations should educate users about the risks associated with visiting untrusted websites. Implementing network controls to restrict access to potentially malicious sites can also significantly reduce risk.
Detection Guidance
To detect potential exploitation of CVE-2016-3351, organizations should monitor logs for unusual website access patterns and user behavior anomalies. Behavioral indicators may include unexpected file access requests originating from web browser sessions.
Network signatures for known malicious sites can aid in preventing access to infectious content. Regular audits and reviews of user permissions can also help in identifying unauthorized access attempts.
AppSecure Threat Intelligence Insight
CVE-2016-3351 highlights a persistent threat within widely used applications, emphasizing the need for continuous security assessments. This vulnerability serves as a reminder of the importance of user education and awareness in preventing social engineering attacks.
Organizations should consider implementing a comprehensive vulnerability management program to identify, prioritize, and mitigate vulnerabilities effectively.
As part of ongoing security initiatives, organizations should also engage in periodic penetration testing to evaluate their defenses against emerging threats.
In conclusion, CVE-2016-3351 exemplifies the need for robust security practices and the proactive management of vulnerabilities, ensuring that organizations remain resilient against potential attacks.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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