From: Nicholas Bellinger <nab@linux-iscsi.org>
Date: Fri, 6 Jun 2014 01:08:57 +0000 (-0700)
Subject: iscsi-target: Reject mutual authentication with reflected CHAP_C
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~26^2~17
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1d2b60a5545942b1376cb48c1d55843d71e3a08f;p=pandora-kernel.git

iscsi-target: Reject mutual authentication with reflected CHAP_C

This patch adds an explicit check in chap_server_compute_md5() to ensure
the CHAP_C value received from the initiator during mutual authentication
does not match the original CHAP_C provided by the target.

This is in line with RFC-3720, section 8.2.1:

   Originators MUST NOT reuse the CHAP challenge sent by the Responder
   for the other direction of a bidirectional authentication.
   Responders MUST check for this condition and close the iSCSI TCP
   connection if it occurs.

Reported-by: Tejas Vaykole <tejas.vaykole@calsoftinc.com>
Cc: stable@vger.kernel.org # 3.1+
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
---

Reading git-diff-tree failed