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Category:   Application (Generic)  >   tgt Vendors:   stgt.sourceforge.net
(Red Hat Issues Fix) tgt Double-Free Memory Flaw Lets Remote Users Deny Service
SecurityTracker Alert ID:  1025185
SecurityTracker URL:  http://securitytracker.com/id/1025185
CVE Reference:   CVE-2011-0001   (Links to External Site)
Date:  Mar 9 2011
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 1.0.14 and prior versions
Description:   A vulnerability was reported in tgt. A remote user can cause denial of service conditions.

A remote user can send specially crafted data to trigger a double-free flaw and cause the target tgtd daemon to crash.

The vulnerability resides in '/usr/iscsi/iscsid.c'.

Emmanuel Bouillon of NATO C3 Agency reported this vulnerability.

[Editor's note: This application is part of the 'scsi-target-utils' package on Red Hat.]

Impact:   A remote user can cause the tgt daemon to crash.
Solution:   Red Hat has issued a fix for scsi-target-utils.

The Red Hat advisory is available at:

https://rhn.redhat.com/errata/RHSA-2011-0332.html

Vendor URL:  stgt.sourceforge.net/ (Links to External Site)
Cause:   Access control error, State error
Underlying OS:  Linux (Red Hat Enterprise)
Underlying OS Comments:  5, 6

Message History:   This archive entry is a follow-up to the message listed below.
Mar 9 2011 tgt Double-Free Memory Flaw Lets Remote Users Deny Service



 Source Message Contents

Subject:  [RHSA-2011:0332-01] Important: scsi-target-utils security update

-----BEGIN PGP SIGNED MESSAGE-----
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=====================================================================
                   Red Hat Security Advisory

Synopsis:          Important: scsi-target-utils security update
Advisory ID:       RHSA-2011:0332-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2011-0332.html
Issue date:        2011-03-09
CVE Names:         CVE-2011-0001 
=====================================================================

1. Summary:

An updated scsi-target-utils package that fixes one security issue is now
available for Red Hat Enterprise Linux 5 and 6.

The Red Hat Security Response Team has rated this update as having
important security impact. A Common Vulnerability Scoring System (CVSS)
base score, which gives a detailed severity rating, is available from the
CVE link in the References section.

2. Relevant releases/architectures:

RHEL Cluster-Storage (v. 5 server) - i386, ia64, ppc, x86_64
Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, x86_64
Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64

3. Description:

The scsi-target-utils package contains the daemon and tools to set up and
monitor SCSI targets. Currently, iSCSI software and iSER targets are
supported.

A double-free flaw was found in scsi-target-utils' tgtd daemon. A remote
attacker could trigger this flaw by sending carefully-crafted network
traffic, causing the tgtd daemon to crash. (CVE-2011-0001)

Red Hat would like to thank Emmanuel Bouillon of NATO C3 Agency for
reporting this issue.

All scsi-target-utils users should upgrade to this updated package, which
contains a backported patch to correct this issue. All running
scsi-target-utils services must be restarted for the update to take effect.

4. Solution:

Before applying this update, make sure all previously-released errata
relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/kb/docs/DOC-11259

5. Bugs fixed (http://bugzilla.redhat.com/):

667261 - CVE-2011-0001 scsi-target-utils: double-free vulnerability leads to pre-authenticated crash

6. Package List:

RHEL Cluster-Storage (v. 5 server):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/scsi-target-utils-1.0.8-0.el5_6.1.src.rpm

i386:
scsi-target-utils-1.0.8-0.el5_6.1.i386.rpm
scsi-target-utils-debuginfo-1.0.8-0.el5_6.1.i386.rpm

ia64:
scsi-target-utils-1.0.8-0.el5_6.1.ia64.rpm
scsi-target-utils-debuginfo-1.0.8-0.el5_6.1.ia64.rpm

ppc:
scsi-target-utils-1.0.8-0.el5_6.1.ppc.rpm
scsi-target-utils-debuginfo-1.0.8-0.el5_6.1.ppc.rpm

x86_64:
scsi-target-utils-1.0.8-0.el5_6.1.x86_64.rpm
scsi-target-utils-debuginfo-1.0.8-0.el5_6.1.x86_64.rpm

Red Hat Enterprise Linux Server (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/scsi-target-utils-1.0.4-3.el6_0.1.src.rpm

i386:
scsi-target-utils-1.0.4-3.el6_0.1.i686.rpm
scsi-target-utils-debuginfo-1.0.4-3.el6_0.1.i686.rpm

ppc64:
scsi-target-utils-1.0.4-3.el6_0.1.ppc64.rpm
scsi-target-utils-debuginfo-1.0.4-3.el6_0.1.ppc64.rpm

x86_64:
scsi-target-utils-1.0.4-3.el6_0.1.x86_64.rpm
scsi-target-utils-debuginfo-1.0.4-3.el6_0.1.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/scsi-target-utils-1.0.4-3.el6_0.1.src.rpm

i386:
scsi-target-utils-1.0.4-3.el6_0.1.i686.rpm
scsi-target-utils-debuginfo-1.0.4-3.el6_0.1.i686.rpm

x86_64:
scsi-target-utils-1.0.4-3.el6_0.1.x86_64.rpm
scsi-target-utils-debuginfo-1.0.4-3.el6_0.1.x86_64.rpm

These packages are GPG signed by Red Hat for security.  Our key and 
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/#package

7. References:

https://www.redhat.com/security/data/cve/CVE-2011-0001.html
https://access.redhat.com/security/updates/classification/#important

8. Contact:

The Red Hat security contact is <secalert@redhat.com>.  More contact
details at https://www.redhat.com/security/team/contact/

Copyright 2011 Red Hat, Inc.
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