Penetration Testing mailing list archives
RE: Howto strace apache as nobody/apache user?
From: "Shane Warner" <shane () aplv com>
Date: Wed, 31 May 2006 12:55:33 -0700
One simple way would be to temporarily change the "nobody" user's shell to /bin/bash from /bin/false or whatever you have it set to. Something like usermod nobody -s /bin/bash would do the trick. Then su nobody and run your strace from bash. Just make absolutely sure to change it back to /bin/false when you are finished. Shane Warner Director of IT Answer Plus Inc 1840 East Sahara Suite 205 Las Vegas NV http://www.aplv.com (702) 388-7377 -----Original Message----- From: Rizki Wicaksono [mailto:rizki.wicaksono () gmail com] Sent: Tuesday, May 30, 2006 9:23 PM To: pen-test () securityfocus com Subject: Howto strace apache as nobody/apache user? Hi List, Does anyone know how to strace/ktrace-ing apache httpd server as nobody/apache user ? Apache initially starting as root then it forks into many process after leaving its root credentials, usually being apache or nobody (depends on httpd.conf). So, by theory if I could be apache/nobody user, I will be able to strace/ktrace-ing any process that owned by apache/nobody user. So i put small cmd.php shell to do that. With this simple code: <pre><? passthru($_GET['cmd']); ?></pre> Using my browser pointing to http://localhost/cmd.php?cmd=id, confirm that it has apache credentials. After reading the output of ps aux (http://localhost/cmd.php?cmd=ps aux), i chose one process id of httpd owned by apache to test. When I try using URL http://localhost/cmd.php?cmd=strace -p apache_pid 2>/tmp/err, I got operation not permitted error. The same happen to freebsd box using ktrace command. Is this a security feature of apache or what? Thanks before - Rizki Wicaksono - ---------------------------------------------------------------------------- -- This List Sponsored by: Cenzic Concerned about Web Application Security? Why not go with the #1 solution - Cenzic, the only one to win the Analyst's Choice Award from eWeek. As attacks through web applications continue to rise, you need to proactively protect your applications from hackers. Cenzic has the most comprehensive solutions to meet your application security penetration testing and vulnerability management needs. You have an option to go with a managed service (Cenzic ClickToSecure) or an enterprise software (Cenzic Hailstorm). Download FREE whitepaper on how a managed service can help you: http://www.cenzic.com/news_events/wpappsec.php And, now for a limited time we can do a FREE audit for you to confirm your results from other product. Contact us at request () cenzic com for details. ---------------------------------------------------------------------------- -- !DSPAM:447df36818971804284693! ------------------------------------------------------------------------------ This List Sponsored by: Cenzic Concerned about Web Application Security? Why not go with the #1 solution - Cenzic, the only one to win the Analyst's Choice Award from eWeek. As attacks through web applications continue to rise, you need to proactively protect your applications from hackers. Cenzic has the most comprehensive solutions to meet your application security penetration testing and vulnerability management needs. You have an option to go with a managed service (Cenzic ClickToSecure) or an enterprise software (Cenzic Hailstorm). Download FREE whitepaper on how a managed service can help you: http://www.cenzic.com/news_events/wpappsec.php And, now for a limited time we can do a FREE audit for you to confirm your results from other product. Contact us at request () cenzic com for details. ------------------------------------------------------------------------------
Current thread:
- Howto strace apache as nobody/apache user? Rizki Wicaksono (May 31)
- RE: Howto strace apache as nobody/apache user? Shane Warner (May 31)
- Re: Howto strace apache as nobody/apache user? David M. Zendzian (May 31)
- Re: Howto strace apache as nobody/apache user? Peter Kosinar (May 31)