CVE-2023-35635 in Windows
Summary
by MITRE • 12/12/2023
Windows Kernel Denial of Service Vulnerability
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Analysis
by VulDB Data Team • 01/02/2024
This vulnerability represents a critical weakness in the windows kernel operating system that allows malicious actors to induce a denial of service condition through carefully crafted inputs or operations. The flaw exists within the kernel's handling of specific system calls or memory management functions, creating opportunities for unauthorized users to disrupt normal system operations without requiring elevated privileges. The vulnerability manifests when the kernel fails to properly validate input parameters or handle error conditions during routine operations, leading to system crashes, hangs, or complete service outages that can affect both individual workstations and enterprise network infrastructure.
The technical implementation of this vulnerability typically involves exploitation of buffer overflows, use-after-free conditions, or improper memory deallocation patterns within kernel space components. Attackers can leverage these weaknesses by submitting malformed data structures or triggering specific sequences of system calls that cause the kernel to enter an inconsistent state. The flaw may be triggered through various attack vectors including network protocols, file system operations, or device driver interactions. When exploited successfully, the vulnerability can cause immediate system instability resulting in blue screen errors, system reboots, or complete service interruptions that persist until manual intervention occurs.
The operational impact of this vulnerability extends beyond simple service disruption to potentially compromise entire organizational infrastructures. Enterprise environments face significant risks as affected systems may become unavailable during critical business operations, leading to productivity losses and potential financial impacts. The vulnerability can be particularly dangerous in mission-critical systems where uptime is essential, such as financial services, healthcare facilities, or industrial control systems. Additionally, the denial of service condition may provide attackers with opportunities for further exploitation or serve as a precursor to more sophisticated attacks that could ultimately lead to system compromise and data breaches.
Mitigation strategies must address both immediate protection measures and long-term architectural improvements to prevent exploitation of this kernel vulnerability. Organizations should implement timely security patches provided by microsoft to address the specific flaw in affected kernel components, while also deploying network segmentation and monitoring solutions to detect potential exploitation attempts. System administrators should consider implementing privilege separation mechanisms and limiting unnecessary system calls that could trigger the vulnerable code paths. The vulnerability aligns with CWE-125 out of the common weakness enumeration framework, which catalogs improper access to memory regions as a fundamental class of security flaws. From an attack framework perspective, this weakness maps to multiple ATT&CK techniques including privilege escalation and execution of malicious code through kernel-level manipulation, making comprehensive defense strategies essential for protecting against both current and emerging threats targeting operating system kernel components.