[原文]The KDE kscd program does not drop privileges when executing a program specified in a user's SHELL environmental variable, which allows the user to gain privileges by specifying an alternate program to execute.
The KDE kscd程序在执行指定用户SHELL 环境变量的程序时没有降低权限，存在漏洞，用户可以通过执行指定交替程序获取特权。
Currently the SecurityFocus staff are not aware of any vendor supplied patches for this issue. If you feel we are in error or are aware of more recent information, please mail us at: firstname.lastname@example.org. Removal of the sgid bit on the kscd binary will eliminate this vulnerability.
KDE 1.1/1.1.1/1.2/2.0 kscd SHELL Environmental Variable Vulnerability (EDBID:19915)
Some linux distributions (S.u.S.E. 6.4 reported) ship with kscd (a CD player for the KDE Desktop) sgid disk. kscd uses the contents of the 'SHELL' environment variable to execute a browser. This makes it possible to obtain a sgid 'disk' shell. Using these privileges along with code provided in the exploit, it is possible to change attributes on raw disks. This in turns allows an attacker to create a root shell, thus compromising the intergrity of the machine.
Red Hat, Linux Mandrake, and Turbo Linux do not currently ship with kscd setgid 'disk'.