Re: [Full-disclosure] GNU tar directory traversal

[Siim Põder <windo@xxxxxxxxxxxxxxx>]

Yo!

Jeb Osama wrote:
> LOLOLOLOLOLOLOLOLOL Thats pretty much the purpose of symlinks.. Whats
> your point in posting this fact in FD?

And is tar supposed to overwrite arbitrary files on the filesystem when
untaring an archieve?

If I understand Teemu right, then he's found a way to create a tar file
that would create a symlink when untared; and create further files to
wherever the symlink points to (If this is not the case, then
LOLOLOLOLOLOL might be in order).

So, for example, I make a tar archieve that contains a symlink to
'bla'->'/etc' and 'bla/passwd', that - if opened by root - would
overwrite the passwd file.

Discussing wether root should ever run tar is irrelevant.

Siim Põder

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