linux-kernel - Re: [PATCH] ipv4: netfilter: ip_tables: fix infoleak to userspace

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] [day] [month] [year] [list]

Message-ID: <4D7F5D4F.7030703@trash.net>
Date:	Tue, 15 Mar 2011 13:36:31 +0100
From:	Patrick McHardy <kaber@...sh.net>
To:	Vasiliy Kulikov <segoon@...nwall.com>
CC:	linux-kernel@...r.kernel.org, security@...nel.org,
	"David S. Miller" <davem@...emloft.net>,
	Alexey Kuznetsov <kuznet@....inr.ac.ru>,
	James Morris <jmorris@...ei.org>,
	Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>,
	netfilter-devel@...r.kernel.org, netfilter@...r.kernel.org,
	coreteam@...filter.org, netdev@...r.kernel.org
Subject: Re: [PATCH] ipv4: netfilter: ip_tables: fix infoleak to userspace

On 10.03.2011 19:12, Vasiliy Kulikov wrote:
> Structures ipt_replace, compat_ipt_replace, and xt_get_revision are
> copied from userspace.  Fields of these structs that are
> zero-terminated strings are not checked.  When they are used as argument
> to a format string containing "%s" in request_module(), some sensitive
> information is leaked to userspace via argument of spawned modprobe
> process.
> 
> The first and the third bugs were introduced before the git epoch; the
> second was introduced in 2722971c (v2.6.17-rc1).  To trigger the bug
> one should have CAP_NET_ADMIN.

Applied, thanks.
--
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/