Vulnerability Information
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Vulnerability Title
N/A
Vulnerability Description
The ptsname function in FreeBSD 6.0 through 7.0-PRERELEASE does not properly verify that a certain portion of a device name is associated with a pty of a user who is calling the pt_chown function, which might allow local users to read data from the pty from another user.
CVSS Information
N/A
Vulnerability Type
N/A
Vulnerability Title
FreeBSD pty处理多个本地信息泄露漏洞
Vulnerability Description
FreeBSD就是一种运行在Intel平台上、可以自由使用的开放源码Unix类系统。 FreeBSD在处理pty的权限时存在漏洞，本地攻击者可能利用此漏洞提升自己的权限。 FreeBSD的openpty()函数在为打开的伪终端设置权限时存在错误，恶意的本地用户可以通过执行内部调用了openpty()的程序从非root用户所打开的pty读取文本；此外ptsname(3)函数错误的从/dev中的设备节点名获得了两个字符，但没有核实是否在操作调用用户所拥有的有效pty。pt_chown使用了ptsname(3)
CVSS Information
N/A
Vulnerability Type
N/A