CVE-2017-0147 is a high-severity vulnerability affecting the SMBv1 server in multiple Microsoft Windows versions. This vulnerability allows remote attackers to obtain sensitive information from process memory via crafted packets. The affected systems include Windows Vista SP2, Windows 7 SP1, Windows 8.1, Windows 10 (Gold, 1511, and 1607), Windows Server 2008 SP2, and Windows Server 2016, among others.
The severity level of this vulnerability is classified as high, with a CVSS score of 7.5. Organizations must understand the implications of this vulnerability, as the risk to organizations includes potential unauthorized access to sensitive information, impacting confidentiality without affecting integrity or availability.
Exploitation status indicates that this vulnerability is actively exploited, and patches are available. Organizations should prioritize patching immediately to mitigate any associated risks.
Given the potential for exploitation, organizations should address this vulnerability in their priority patch cycle to ensure system integrity and protect sensitive data.
Vulnerability Details
The official description of CVE-2017-0147 states that the SMBv1 server in Microsoft Windows allows remote attackers to obtain sensitive information from process memory via crafted packets. The vulnerability is classified under the CWE-200 category, which pertains to information exposure.
The CVSS version 3.1 vector string is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N, indicating that the attack vector is network-based, the attack complexity is low, and no privileges or user interaction are required for exploitation.
The systems affected include various versions of Windows operating systems, including Windows 10, Windows 7, Windows 8.1, and Windows Server versions. This broad spectrum creates a significant risk landscape for organizations still using these platforms.
Technical Analysis
The root cause of CVE-2017-0147 lies within the SMBv1 server implementation, which fails to properly manage crafted packets that can exploit memory handling, resulting in an information disclosure scenario. The attack vector is network-based, and attackers can exploit this vulnerability remotely without needing any privileges.
The attack complexity is low, allowing for easy exploitation. No user interaction is required, and the impact on confidentiality is high, as attackers may gain access to sensitive information stored in memory. However, the integrity and availability impacts are non-existent.
Risk & Impact Analysis
The real-world risk posed by CVE-2017-0147 is significant, as it allows unauthorized access to sensitive information, which can lead to data breaches or further exploitation within an organization's network. The blast radius potential is high, given the wide range of affected Microsoft products.
Organizations must assess their exposure to this vulnerability and prioritize remediation efforts accordingly. Given the CVSS score of 7.5 and the fact that it is included in the Known Exploited Vulnerabilities (KEV) catalog, organizations should treat this vulnerability as critical and apply necessary patches immediately.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | Yes |
Actively Exploited | Yes |
Ransomware Use | Yes |
Affected Versions
The following versions are affected by CVE-2017-0147: Windows Vista SP2, Windows 7 SP1, Windows 8.1, Windows 10 (Gold, 1511, 1607), Windows Server 2008 SP2, Windows Server 2012 (Gold and R2), Windows Server 2016, and Windows RT 8.1. All versions prior to vendor patch are vulnerable.
Mitigation & Remediation
Organizations must apply updates as per vendor instructions to remediate CVE-2017-0147. Patches are available from Microsoft, and organizations should ensure that they are running the latest version of the affected software.
For those unable to immediately apply the patches, consider implementing network-level controls to restrict access to the SMBv1 service. Additionally, monitoring logs for any unusual activity related to SMB could help in early detection of exploitation attempts.
Further assistance can be obtained through penetration testing to validate the security posture against this vulnerability.
Detection Guidance
Detection for CVE-2017-0147 requires monitoring for specific log indicators related to SMB traffic. Look for anomalies in SMB sessions that could indicate exploitation attempts, such as unexpected packet sizes or unusual request patterns.
Behavioral anomalies in user activity, especially involving sensitive data access, should also be monitored closely. Implementing network signatures to detect known exploit patterns can provide additional layers of security.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2017-0147 highlights the critical need for organizations to regularly update and patch their systems. This vulnerability is part of a broader trend in which SMB vulnerabilities are often targeted due to their widespread use in enterprise environments.
Security teams should learn from this incident to enhance their security posture. Regular penetration testing, such as continuous security testing, can help identify vulnerabilities before they are exploited.
In conclusion, the necessity for proactive vulnerability management cannot be overstated. Organizations should adopt a comprehensive approach to security that includes regular software updates and robust monitoring practices.
For further reading on vulnerability management strategies, organizations can refer to our guide on vulnerability management programs.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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