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Date: Thu, 11 Aug 2011 08:20:41 +0300
From: Eren Türkay <eren@...dus.org.tr>
To: oss-security@...ts.openwall.com
Cc: Ralf Baechle <ralf@...ux-mips.org>,
Thomas Osterried <ax25@...erg.in-berlin.de>
Subject: Re: CVE request (and disclosure): ax25d missing
setuid return code check
On Tue, Aug 09, 2011 at 11:33:04PM -0400, Dan Rosenberg wrote:
> The AX.25 daemon (ax25d), typically provided in the ax25-tools
> package, allows administrators to associate incoming AX.25, NET/ROM,
> and ROSE traffic with the execution of an endpoint program (most
> commonly "node"), which is run under a specified user account.
> Because ax25d is missing a check on the return code for a setuid call
> responsible for dropping privileges to the specified user, it may be
> possible to cause setuid to fail, after which the chosen program will
> be executed with root privileges. In other words, if you're in the
> business of handing out unprivileged shells over amateur radio (don't
> we all? :p ), this would allow for remote compromise.
Hello,
Thank you for your investigation on the topic. Although this issue seems
to be low-priority, it's good to let the maintainers know.
I'm CCing Ralf Baechle, and Thomas Osterried who, accordingly to
linux-ac25 site, are the maintainers of ax25 utilities.
>
> -Dan
--
. 73! DE TA1AET
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