Full Disclosure mailing list archives
Re: Linux kernel do_mremap() proof-of-concept exploit code
From: Ariel Biener <ariel () fireball tau ac il>
Date: Wed, 7 Jan 2004 02:12:55 +0200 (IST)
On Mon, 5 Jan 2004, Christophe Devine wrote: Hi, I tested it on various machines, including single/dual pIII, single/dual Xeon P4, etc. I only managed to either freeze the machine or reboot it. However, since this compiled binary needs to special permissions to be affective, I have found out that on any mail server where the user can edit his .procmailrc or .forward in this home directory (typical deparmental or even campus Linux mail servers at academic institutes), and do the following: :0 * ^Subject: reboot | /path/to/homedir/do_remap Then, at his convenience, all he/she needs to do is send an e-mail to themselves with the subject reboot, and voilla, either the mail servers reboots or goes caput (freezes). Nasty. --Ariel
The following program can be used to test if a x86 Linux system is vulnerable to the do_mremap() exploit; use at your own risk.
-- Ariel Biener e-mail: ariel () post tau ac il PGP(6.5.8) public key http://www.tau.ac.il/~ariel/pgp.html _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.netsys.com/full-disclosure-charter.html
Current thread:
- Linux kernel do_mremap() proof-of-concept exploit code Christophe Devine (Jan 05)
- Re: Linux kernel do_mremap() proof-of-concept exploit code Daniel Husand (Jan 06)
- Re: Re: Linux kernel do_mremap() proof-of-concept exploit code Epic (Jan 06)
- Re: Re: Linux kernel do_mremap() proof-of-concept exploit code backblue (Jan 06)
- Re: Re: Linux kernel do_mremap() proof-of-concept exploit code Pierre BETOUIN (Jan 06)
- Re: Re: Linux kernel do_mremap() proof-of-concept exploit code Epic (Jan 06)
- Re: Re: Linux kernel do_mremap() proof-of-concept exploit code Daniel B (Jan 06)
- Re: Re: Linux kernel do_mremap() proof-of-concept exploit code Luke Norman (Jan 06)
- Re: Re: Linux kernel do_mremap() proof-of-concept exploit code José María Mateos (Jan 06)
- Re: Linux kernel do_mremap() proof-of-concept exploit code Daniel Husand (Jan 06)
- Re: Re: Linux kernel do_mremap() proof-of-concept exploit code KF (Jan 06)
- <Possible follow-ups>
- Re: Linux kernel do_mremap() proof-of-concept exploit code over_g (Jan 06)
- Re: Linux kernel do_mremap() proof-of-concept exploit code Alex (Jan 06)
- RE: Linux kernel do_mremap() proof-of-concept exploit code Bryce Porter (Jan 07)