CVE-2017-8582 in Windows
Summary
by MITRE
HTTP.sys in Microsoft Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, Windows 10 Gold, 1511, 1607, and 1703, and Windows Server 2016 allows an information disclosure vulnerability when the component improperly handles objects in memory, aka "Https.sys Information Disclosure Vulnerability".
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Analysis
by VulDB Data Team • 09/14/2024
The CVE-2017-8582 vulnerability represents a critical information disclosure flaw within the HTTP.sys kernel driver component of Microsoft Windows operating systems. This vulnerability specifically affects a wide range of Microsoft products including Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, Windows 10 versions 1511, 1607, and 1703, as well as Windows Server 2016. The vulnerability stems from improper handling of objects in memory within the HTTP.sys component, which serves as the core HTTP stack for Windows-based web services and applications. This flaw allows attackers to potentially access sensitive information that should remain protected within the system's memory space.
The technical exploitation of this vulnerability occurs through crafted HTTP requests that trigger improper memory handling within the HTTP.sys driver. When the system processes these malformed requests, it fails to properly validate input parameters, leading to information disclosure through memory leaks or improper object management. The vulnerability is classified under CWE-200 as "Information Exposure" and can be categorized under ATT&CK technique T1005 as "Data from Local System" or T1041 as "Exfiltration Over C2 Channel" when leveraged in conjunction with other attack vectors. The flaw specifically impacts how the HTTP.sys driver manages memory objects during HTTP request processing, potentially exposing kernel memory contents to unauthorized users.
The operational impact of CVE-2017-8582 extends beyond simple information disclosure, as the leaked memory contents may contain sensitive data such as credentials, encryption keys, or system configuration details that could be exploited for further attacks. An attacker could potentially use this vulnerability to gain insights into the target system's memory layout, which could facilitate more sophisticated exploitation techniques including privilege escalation or lateral movement within a network. The vulnerability is particularly concerning because it affects multiple versions of Windows and Windows Server products, making it a widespread concern for enterprise environments. Organizations running affected systems could experience compromised security posture, with potential for credential theft, system reconnaissance, and unauthorized access to sensitive information.
Mitigation strategies for CVE-2017-8582 include applying the Microsoft security update KB4012212, which addresses the specific memory handling issues within the HTTP.sys driver. Network administrators should also implement proper firewall rules to restrict access to HTTP services where possible, and monitor network traffic for unusual patterns that might indicate exploitation attempts. Additionally, organizations should ensure their systems are configured with appropriate security settings, including disabling unnecessary HTTP services and implementing proper access controls. The vulnerability demonstrates the importance of maintaining up-to-date security patches and highlights the risks associated with legacy systems that may not receive continued support. Security monitoring solutions should be configured to detect anomalous HTTP request patterns that could indicate exploitation attempts, and regular security assessments should be conducted to identify and remediate similar vulnerabilities across the enterprise infrastructure.