CVE-2017-6952

The core of the vulnerability lies in an integer overflow within cswinkernelmalloc. An attacker can exploit this by providing a maliciously crafted, excessively large value as an argument to this function. This overflow results in an allocation request that exceeds the available buffer space, leading to a heap-based buffer overflow within a kernel driver. Successful exploitation can cause the system to crash, leading to a denial of service. While the description mentions 'unspecified other impact,' the kernel driver context suggests potential for privilege escalation or arbitrary code execution, though this is not explicitly confirmed. The impact is particularly severe because Capstone is often used in security tools and embedded systems, potentially exposing critical infrastructure to attack.

1. Veröffentlicht2017-03-16
2. Geändert2024-11-21
3. EPSS aktualisiert2026-04-02

The primary mitigation for CVE-2017-6952 is to upgrade to Capstone version 3.0.5rc2 or later. This version includes a fix for the integer overflow vulnerability. If an immediate upgrade is not feasible due to compatibility concerns or system downtime requirements, consider implementing runtime checks to validate the size of the allocation request before calling cswinkernelmalloc. While a WAF or proxy cannot directly mitigate this vulnerability, careful input validation in applications using Capstone can help prevent malicious values from reaching the disassembly framework. There are no specific Sigma or YARA rules readily available for this vulnerability, but monitoring for unusual memory allocation patterns within the Capstone process can be a useful detection strategy.