full-disclosure - Re: Symlink vulnerabilities

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date: Thu, 27 Oct 2011 10:20:16 -0400 (EDT)
From: bugs@....dhs.org
To: Valdis.Kletnieks@...edu
Cc: full-disclosure@...ts.grok.org.uk
Subject: Re: Symlink vulnerabilities

Hi,

I've gotten this exploit to work, albeit on a slow 500mhz system with
256mb of ram.  I've shared the details with vladz and will make them
available soon.  It's a hard race to win, but it can be won about 60% of
the time.

> On Fri, 28 Oct 2011 00:56:35 +1100, xD 0x41 said:
>
>> morning but, i trust you, itcannot be exploited, in any way, it will
>> only cause corruption of tar and compression utils, at most.
>
> Umm. Maybe in *that step* it's "at most". But what can you leverage
> that into?
>
> If you can screw with the code execution of the tar command
> enough to get root to untar a file of your choosing, you then have your
> entire rootkit installed with no further effort on your part. ;)
>
> (For a wonderful read on leveraging, find the tech writeup from a few
> years
> ago on how a 1-byte overlay in ntpd got leveraged into a total root pwn.)
> _______________________________________________
> 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/