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Category:  OS (Linux)  >  Linux Kernel Vendors:  kernel.org
(Red Hat Issues Fix) Linux Kernel Buffer Overflow in DCCP Subsystem May Let Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1020365
SecurityTracker URL:  http://securitytracker.com/id?1020365
CVE Reference:  CVE-2008-2358   (Links to External Site)
Date:  Jun 26 2008
Impact:  Execution of arbitrary code via network, User access via network
Fix Available:  Yes   Vendor Confirmed:  Yes  
Advisory:  Red Hat Advisory
Version(s): 5
Description:  A vulnerability was reported in Linux Kernel. A remote user can execute arbitrary code on the target system.

A remote user can send specially crafted data to trigger a buffer overflow in the DCCP subsystem and execute arbitrary code on the target system. The code will run with the privileges of the target service.

The vulnerability resides in 'net/dccp/feat.c'.

Brandon Edwards of McAfee Avert labs reported this vulnerability.
Impact:  A remote user can execute arbitrary code on the target system.
Solution:  Red Hat has released a fix.

The Red Hat advisory is available at:

https://rhn.redhat.com/errata/RHSA-2008-0519.html
Vendor URL:  www.kernel.org/ (Links to External Site)
Cause:  Boundary error
Underlying OS:  Linux (Red Hat Enterprise)
Reported By:  bugzilla@redhat.com
Message History:   This archive entry is a follow-up to the message listed below.
Jun 9 2008 Linux Kernel Buffer Overflow in DCCP Subsystem May Let Remote Users Execute Arbitrary Code


 Source Message Contents
Date:  Wed, 25 Jun 2008 11:48:24 -0400
From:  bugzilla@redhat.com
Subject:  [RHSA-2008:0519-01] Important: kernel security and bug fix update

 

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

=====================================================================
                   Red Hat Security Advisory

Synopsis:          Important: kernel security and bug fix update
Advisory ID:       RHSA-2008:0519-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2008-0519.html
Issue date:        2008-06-25
CVE Names:         CVE-2008-0598 CVE-2008-2358 CVE-2008-2729 
=====================================================================

1. Summary:

Updated kernel packages that fix various security issues and a bug are now
available for Red Hat Enterprise Linux 5.

This update has been rated as having important security impact by the Red
Hat Security Response Team.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Desktop (v. 5 client) - i386, noarch, x86_64
Red Hat Enterprise Linux (v. 5 server) - i386, ia64, noarch, ppc, s390x, x86_64

3. Description:

The kernel packages contain the Linux kernel, the core of any Linux
operating system.

These updated packages fix the following security issues:

* A security flaw was found in the Linux kernel memory copy routines, when
running on certain AMD64 systems. If an unsuccessful attempt to copy kernel
memory from source to destination memory locations occurred, the copy
routines did not zero the content at the destination memory location. This
could allow a local unprivileged user to view potentially sensitive data.
(CVE-2008-2729, Important)

* Tavis Ormandy discovered a deficiency in the Linux kernel 32-bit and
64-bit emulation. This could allow a local unprivileged user to prepare and
run a specially crafted binary, which would use this deficiency to leak
uninitialized and potentially sensitive data. (CVE-2008-0598, Important)

* Brandon Edwards discovered a missing length validation check in the Linux
kernel DCCP module reconciliation feature. This could allow a local
unprivileged user to cause a heap overflow, gaining privileges for
arbitrary code execution. (CVE-2008-2358, Moderate)

As well, these updated packages fix the following bug:

* Due to a regression, "gettimeofday" may have gone backwards on certain
x86 hardware. This issue was quite dangerous for time-sensitive systems,
such as those used for transaction systems and databases, and may have
caused applications to produce incorrect results, or even crash.

Red Hat Enterprise Linux 5 users are advised to upgrade to these updated
packages, which contain backported patches to resolve these issues.

4. Solution:

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

This update is available via Red Hat Network.  Details on how to use
the Red Hat Network to apply this update are available at
http://kbase.redhat.com/faq/FAQ_58_10188

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

433938 - CVE-2008-0598 kernel: linux x86_64 ia32 emulation leaks uninitialized data
447389 - CVE-2008-2358 kernel: dccp: sanity check feature length
451271 - CVE-2008-2729 kernel: [x86_64]  The string instruction version didn't zero the output on exc
eption.

6. Package List:

Red Hat Enterprise Linux Desktop (v. 5 client):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/kernel-2.6.18-92.1.6.el5.src.rpm

i386:
kernel-2.6.18-92.1.6.el5.i686.rpm
kernel-PAE-2.6.18-92.1.6.el5.i686.rpm
kernel-PAE-debuginfo-2.6.18-92.1.6.el5.i686.rpm
kernel-PAE-devel-2.6.18-92.1.6.el5.i686.rpm
kernel-debug-2.6.18-92.1.6.el5.i686.rpm
kernel-debug-debuginfo-2.6.18-92.1.6.el5.i686.rpm
kernel-debug-devel-2.6.18-92.1.6.el5.i686.rpm
kernel-debuginfo-2.6.18-92.1.6.el5.i686.rpm
kernel-debuginfo-common-2.6.18-92.1.6.el5.i686.rpm
kernel-devel-2.6.18-92.1.6.el5.i686.rpm
kernel-headers-2.6.18-92.1.6.el5.i386.rpm
kernel-xen-2.6.18-92.1.6.el5.i686.rpm
kernel-xen-debuginfo-2.6.18-92.1.6.el5.i686.rpm
kernel-xen-devel-2.6.18-92.1.6.el5.i686.rpm

noarch:
kernel-doc-2.6.18-92.1.6.el5.noarch.rpm

x86_64:
kernel-2.6.18-92.1.6.el5.x86_64.rpm
kernel-debug-2.6.18-92.1.6.el5.x86_64.rpm
kernel-debug-debuginfo-2.6.18-92.1.6.el5.x86_64.rpm
kernel-debug-devel-2.6.18-92.1.6.el5.x86_64.rpm
kernel-debuginfo-2.6.18-92.1.6.el5.x86_64.rpm
kernel-debuginfo-common-2.6.18-92.1.6.el5.x86_64.rpm
kernel-devel-2.6.18-92.1.6.el5.x86_64.rpm
kernel-headers-2.6.18-92.1.6.el5.x86_64.rpm
kernel-xen-2.6.18-92.1.6.el5.x86_64.rpm
kernel-xen-debuginfo-2.6.18-92.1.6.el5.x86_64.rpm
kernel-xen-devel-2.6.18-92.1.6.el5.x86_64.rpm

Red Hat Enterprise Linux (v. 5 server):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/kernel-2.6.18-92.1.6.el5.src.rpm

i386:
kernel-2.6.18-92.1.6.el5.i686.rpm
kernel-PAE-2.6.18-92.1.6.el5.i686.rpm
kernel-PAE-debuginfo-2.6.18-92.1.6.el5.i686.rpm
kernel-PAE-devel-2.6.18-92.1.6.el5.i686.rpm
kernel-debug-2.6.18-92.1.6.el5.i686.rpm
kernel-debug-debuginfo-2.6.18-92.1.6.el5.i686.rpm
kernel-debug-devel-2.6.18-92.1.6.el5.i686.rpm
kernel-debuginfo-2.6.18-92.1.6.el5.i686.rpm
kernel-debuginfo-common-2.6.18-92.1.6.el5.i686.rpm
kernel-devel-2.6.18-92.1.6.el5.i686.rpm
kernel-headers-2.6.18-92.1.6.el5.i386.rpm
kernel-xen-2.6.18-92.1.6.el5.i686.rpm
kernel-xen-debuginfo-2.6.18-92.1.6.el5.i686.rpm
kernel-xen-devel-2.6.18-92.1.6.el5.i686.rpm

ia64:
kernel-2.6.18-92.1.6.el5.ia64.rpm
kernel-debug-2.6.18-92.1.6.el5.ia64.rpm
kernel-debug-debuginfo-2.6.18-92.1.6.el5.ia64.rpm
kernel-debug-devel-2.6.18-92.1.6.el5.ia64.rpm
kernel-debuginfo-2.6.18-92.1.6.el5.ia64.rpm
kernel-debuginfo-common-2.6.18-92.1.6.el5.ia64.rpm
kernel-devel-2.6.18-92.1.6.el5.ia64.rpm
kernel-headers-2.6.18-92.1.6.el5.ia64.rpm
kernel-xen-2.6.18-92.1.6.el5.ia64.rpm
kernel-xen-debuginfo-2.6.18-92.1.6.el5.ia64.rpm
kernel-xen-devel-2.6.18-92.1.6.el5.ia64.rpm

noarch:
kernel-doc-2.6.18-92.1.6.el5.noarch.rpm

ppc:
kernel-2.6.18-92.1.6.el5.ppc64.rpm
kernel-debug-2.6.18-92.1.6.el5.ppc64.rpm
kernel-debug-debuginfo-2.6.18-92.1.6.el5.ppc64.rpm
kernel-debug-devel-2.6.18-92.1.6.el5.ppc64.rpm
kernel-debuginfo-2.6.18-92.1.6.el5.ppc64.rpm
kernel-debuginfo-common-2.6.18-92.1.6.el5.ppc64.rpm
kernel-devel-2.6.18-92.1.6.el5.ppc64.rpm
kernel-headers-2.6.18-92.1.6.el5.ppc.rpm
kernel-headers-2.6.18-92.1.6.el5.ppc64.rpm
kernel-kdump-2.6.18-92.1.6.el5.ppc64.rpm
kernel-kdump-debuginfo-2.6.18-92.1.6.el5.ppc64.rpm
kernel-kdump-devel-2.6.18-92.1.6.el5.ppc64.rpm

s390x:
kernel-2.6.18-92.1.6.el5.s390x.rpm
kernel-debug-2.6.18-92.1.6.el5.s390x.rpm
kernel-debug-debuginfo-2.6.18-92.1.6.el5.s390x.rpm
kernel-debug-devel-2.6.18-92.1.6.el5.s390x.rpm
kernel-debuginfo-2.6.18-92.1.6.el5.s390x.rpm
kernel-debuginfo-common-2.6.18-92.1.6.el5.s390x.rpm
kernel-devel-2.6.18-92.1.6.el5.s390x.rpm
kernel-headers-2.6.18-92.1.6.el5.s390x.rpm
kernel-kdump-2.6.18-92.1.6.el5.s390x.rpm
kernel-kdump-debuginfo-2.6.18-92.1.6.el5.s390x.rpm
kernel-kdump-devel-2.6.18-92.1.6.el5.s390x.rpm

x86_64:
kernel-2.6.18-92.1.6.el5.x86_64.rpm
kernel-debug-2.6.18-92.1.6.el5.x86_64.rpm
kernel-debug-debuginfo-2.6.18-92.1.6.el5.x86_64.rpm
kernel-debug-devel-2.6.18-92.1.6.el5.x86_64.rpm
kernel-debuginfo-2.6.18-92.1.6.el5.x86_64.rpm
kernel-debuginfo-common-2.6.18-92.1.6.el5.x86_64.rpm
kernel-devel-2.6.18-92.1.6.el5.x86_64.rpm
kernel-headers-2.6.18-92.1.6.el5.x86_64.rpm
kernel-xen-2.6.18-92.1.6.el5.x86_64.rpm
kernel-xen-debuginfo-2.6.18-92.1.6.el5.x86_64.rpm
kernel-xen-devel-2.6.18-92.1.6.el5.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://www.redhat.com/security/team/key/#package

7. References:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-0598
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2358
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2729
http://www.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 2008 Red Hat, Inc.
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