Vulnerability Information
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Vulnerability Title
N/A
Vulnerability Description
The nullfs implementation in sys/fs/nullfs/null_vnops.c in the kernel in FreeBSD 8.3 through 9.2 allows local users with certain permissions to bypass access restrictions via a hardlink in a nullfs instance to a file in a different instance.
CVSS Information
N/A
Vulnerability Type
N/A
Vulnerability Title
FreeBSD 本地安全绕过漏洞
Vulnerability Description
FreeBSD是由Core Team团队负责的FreeBSD项目中的一套类Unix自由操作系统，是经过BSD、386BSD和4.4BSD发展而来的类Unix的一个重要分支。 FreeBSD中的nullfs文件系统实现中存在安全绕过漏洞。本地攻击者可通过在相同系统文件中以对nullfs视图的读权限和对不同nullfs视图的写权限，创建从只读视图到其他视图的硬链接，利用该漏洞绕过文件系统访问限制。以下版本受到影响：FreeBSD 8，8.3，8.4，9，9.1，9.2。
CVSS Information
N/A
Vulnerability Type
N/A