Re: [Full-disclosure] Symlink vulnerabilities




I think it was grep -H '\$\$'


May I ask what the grep(1) pattern was?
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-- Andrew "weev" Auernheimer
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On Sat, 2011-10-22 at 07:54 -0400, bugs@xxxxxxxxxxx wrote:

I apologize as my search wasn't a complex method, just a quick grep for
signs of /tmp misuse. Indeed creating a directory under /tmp is a
safeway
to handle tmp files.

bugs@xxxxxxxxxxx wrote:

bashbug:

/usr/bin/bashbug:TEMPDIR=$TMPDIR/bbug.$$

Maybe I should use bashbug to report a bug in bashbug?


I took a quick look, it's actually using mkdir to create a temporary
directory in /tmp, which it uses for collecting support files.

This is actually a safe way to use /tmp, assuming you check the return
code
of mkdir (which it does). The mkdir() system call behaves very
differently
to open(), and is not vulnerable to these attacks.

Tavis.

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_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
Hosted and sponsored by Secunia - http://secunia.com/
_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
Hosted and sponsored by Secunia - http://secunia.com/


_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
Hosted and sponsored by Secunia - http://secunia.com/



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