.. / Rlwrap
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Shell

It can be used to break out from restricted environments by spawning an interactive system shell.



File write

It writes data to files, it may be used to do privileged writes or write files outside a restricted file system.



SUID

It runs with the SUID bit set and may be exploited to access the file system, escalate or maintain access with elevated privileges working as a SUID backdoor. If it is used to run sh -p, omit the -p argument on systems like Debian that allow the default sh shell to run with SUID privileges.



Sudo

It runs in privileged context and may be used to access the file system, escalate or maintain access with elevated privileges if enabled on sudo.