linux-kernel - Re: Userspace process may be able to DoS kernel

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, 12 Oct 2006 16:25:57 -0400
From:	"Günther Starnberger" <gst@...frog.org>
To:	jplatte@...sa.net
Cc:	"Pekka Enberg" <penberg@...helsinki.fi>,
	linux-kernel@...r.kernel.org
Subject: Re: Userspace process may be able to DoS kernel

On 10/12/06, Joerg Platte <lists@...sa.net> wrote:

> Not that easy, since it takes a few hours to be able to trigger the bug. I
> tried to record the system calls with strace but without success. Skype did
> not cause any lockups and then crashes... Maybe the timing is too different
> with strace.

According to [1] there are several anti-debugging techniques used in
Skype. I.e. if it notices some sort of debugger it will crash (on
purpose).

bye,
/gst

[1] www.blackhat.com/presentations/bh-europe-06/bh-eu-06-biondi/bh-eu-06-biondi-up.pdf
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/