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Re: Apache, no suexec, suid and the environment

by Fletch (Chancellor)
on Jun 28, 2007 at 13:24 UTC ( #623882=note: print w/replies, xml ) Need Help??


in reply to Apache, no suexec, suid and the environment

You can use (localized) changes to %ENV to modify a child process' environment.

{ local $ENV{ LD_LIBRARY_PATH } = q{/path/to/libs}; my $cmd = "..."; system( $cmd ) == 1 or die "Problem with '$cmd': $?\n"; }

(That being said, I also want to say that I vaguely recall ld.so does some sanitizing of the environment on some platforms if the EUID and RUID don't match, so you might not be able to get this to work without another layer of indirection (i.e. you start a suid wrapper which sets the environment up then calls the thing you really want to call).)

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[Corion]: Discipulus: I have to admit that nowadays I either use Path::Class or use File::Find or simply File::Glob:: bsd_glob to read a directory, depending on how fancy my needs are
[shmem]: Discipulus: while (readdir DIR) works fine
[Discipulus]: Eataly vs World(coffe) ;=)
[Discipulus]: shemem i wrote it directly.. but when i tested it i got a lot of 'undefined value..'
[Corion]: Oh, poor Trump can't get a break. Even the Vatican only sends the second in command to greet him...
[shmem]: Discipulus: readdir has the same semantics as readline (a.k.a <>). Have another coffee ☕ ;-)
[Discipulus]: ah! just with my old system perl (5.8.8) was needed

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