Chmod Security

[Chris Megas]

On 15 Jul 99, Christos Ricudis wrote :

>  L> Exw ena provlhma kai 6elw ta fwta sas. An enas xrhsths steilei me
>  L> email ston eayto toy to chmod kai katopin to ektelesei apo to home
>  L> directory toy allazontas ta attributes twn arxeiwn, o 
> root pws mporei 
>  L> na to apofygei ayto?
> 
> De mporeis. (kai to epixeirhma oti "kapws 8a prepei o user na 
> kanei chmod +x to
> chmod gia na to treksei, kai giati na to kanei ean exei th 
> dynatothta na kanei
> chmod eks'arxhs" ksepernietai me th xrhsh toy tar). 
> 
> To mono poy mporeis na kaneis einai na perioriseis to +x 
> attribute, mia poy
> ypopsiazomai oti ayto einai poy se endiaferei. Kane mount ta 
> home directories
> twn users me to option -noexec. 
> 
> Kai mhn ksexaseis ta /tmp/, /var/tmp, ktl ktl  :)


Yparxei isws kai mia allh lysh : Na baleis restricted shell.
Me ayto o xrhsths pou ua kanei login, den mporei na treksei
tipota to opoio den einai se kapoio path pou to orizeis esy.
Epipleon oute cd mporei na kanei oute na allaksei ta SHELL 
variables ktl...
Den eimai sigouros oti ayto akribws ueleis giati den
katalaba kai polla apo to email sou. Apla apantw sto
email tou Christou Ricudi ... 

Thespa, elpizw na bohuhsa kai na mhn grafw askopa ...


Chris Megas


 

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