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| Subject: | Re: Mac symlink attack techniques? |
|---|---|
| Date: | Sat, 12 Apr 2008 12:35:49 -0400 |
On Fri, Apr 11, 2008 at 3:52 AM, Jon Hart <jhart@spoofed.org> wrote:
I'm curious if anyone has some input on this. I am in a situation where I am able to perform a symlink attack against a process that runs as root on a Mac. The catch is that I can create files that don't exist and get them be created mode 666 for world writable goodness, but if the symlink points to a file that already exists all I can do is clobber its content with garbage. Clearly, havoc can be made by trashing important files, but I'm looking for an elegant and quick method for privilege escalation. Is /etc/ld.so.conf my only option?
You can create /etc/rc.installer_cleanup which typically doesn't usually exist, but if it does is run by init to complete software installs after reboot. If you are able to also force a reboot (or even count on one occurring at a certain time), it's pretty much game over. PaulM ------------------------------------------------------------------------ This list is sponsored by: Cenzic Need to secure your web apps NOW? Cenzic finds more, "real" vulnerabilities fast. Click to try it, buy it or download a solution FREE today! http://www.cenzic.com/downloads ------------------------------------------------------------------------
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