KDE kscd SHELL Environmental Variable Vulnerability

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'.


 

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