Vulnerability Information
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Vulnerability Title
MaxKB: Sandbox escape via ctypes and unhooked SYS_pkey_mprotect
Vulnerability Description
MaxKB is an open-source AI assistant for enterprise. Versions 2.7.1 and below contain a sandbox escape vulnerability in the ToolExecutor component. By leveraging Python's ctypes library to execute raw system calls, an authenticated attacker with workspace privileges can bypass the LD_PRELOAD-based sandbox.so module to achieve arbitrary code execution via direct kernel system calls, enabling full network exfiltration and container compromise. The library intercepts critical standard system functions such as execve, system, connect, and open. It also intercepts mprotect to prevent PROT_EXEC (executable memory) allocations within the sandboxed Python processes, but pkey_mprotect is not blocked. This issue has been fixed in version 2.8.0.
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Vulnerability Type
保护机制失效
Vulnerability Title
MaxKB 安全漏洞
Vulnerability Description
MaxKB是1Panel-dev开源的一款基于大语言模型和 RAG 的开源知识库问答系统。 MaxKB 2.7.1及之前版本存在安全漏洞，该漏洞源于ToolExecutor组件存在沙箱逃逸问题，可能导致经过身份验证的攻击者通过直接内核系统调用绕过沙箱，实现任意代码执行。
CVSS Information
N/A
Vulnerability Type
N/A