Created
October 4, 2015 05:40
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precautions to take when running SUID/SGID scripts - mitigate risk
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| Check if BASH_ENV is empty | |
| set umask 077 | |
| Reset $PATH and $IFS | |
| ALWAYS - use absolute path names | |
| Check return codes from system utilities. | |
| Signify the end of the option list with -- | |
| Quote all command line parameters (e.g. "$1") | |
| Check user input for shell metacharacters and garbage | |
| Check user supplied pathnames (absolute/relative) | |
| set shell option noclobber to avoid overwriting existing files |
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