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385 B
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6 lines
No EOL
385 B
Text
source: http://www.securityfocus.com/bid/81/info
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netconfig creates the file /tmp/tmpmsg insecurely and follows symbolic links. An attacker can create a symbolic link from /tmp/tmpmsg to any file and wait for root to run the program. This will clober the target file. The file created has permissions -rw-r--r--.
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$ ln -s /tmp/tmpmsg /etc/passwd
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< wait for root to run netconfig > |