漏洞信息
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Vulnerability Title
sigqueue(2) missing capability mode restriction
Vulnerability Description
sigqueue(2) was marked as permitted in capability mode with the introduction of Capsicum in 2011, but the implementation of kern_sigqueue did not include a capability mode check restricting signal delivery to the calling process's own PID.
A process in capability mode can use sigqueue(2) to send signals to any process it could signal following standard Unix permissions, bypassing the Capsicum sandbox restriction. A compromised sandboxed process could interfere with other processes, for example by sending SIGKILL or SIGSTOP. This could be any process running as the same user, or any process, for a superuser sandboxed process.
CVSS Information
N/A
Vulnerability Type
特权授予不正确
Vulnerability Title
FreeBSD 权限许可和访问控制问题漏洞
Vulnerability Description
FreeBSD是FreeBSD基金会开源的一套类Unix操作系统。 FreeBSD存在权限许可和访问控制问题漏洞,该漏洞源于Capsicum模块中kern_sigqueue实现缺少能力模式检查,可能导致沙盒进程绕过限制向其他进程发送信号。
CVSS Information
N/A
Vulnerability Type
N/A