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Category:   Application (VPN)  >   Openswan Vendors:   openswan.org
(Red Hat Issues Fix) Openswan Buffer Overflows Let Remote Authenticated Gateways Execute Arbitrary Code
SecurityTracker Alert ID:  1024750
SecurityTracker URL:  http://securitytracker.com/id/1024750
CVE Reference:   CVE-2010-3302, CVE-2010-3308, CVE-2010-3752, CVE-2010-3753   (Links to External Site)
Date:  Nov 17 2010
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 2.6.25 - 2.6.28
Description:   Several vulnerabilities were reported in Openswan. A remote authenticated user can execute arbitrary code on the target system.

A remote authenticated gateway can send specially crafted data to trigger a buffer overflow and execute arbitrary code on the target system or cause denial of service conditions. The code will run with the privileges of the target user.

Specially crafted cisco_dns_info or cisco_domain_info values can trigger code execution [CVE-2010-3302, CVE-2010-3752].

A specially crafted cisco_banner value can trigger code execution [CVE-2010-3308, CVE-2010-3753].

D. Hugh Redelmeier and and Paul Wouters reported these vulnerabilities.
Impact:   A remote authenticated user can execute arbitrary code on the target system.
Solution:   Red Hat has issued a fix.

The Red Hat advisory is available at:

https://rhn.redhat.com/errata/RHSA-2010-0892.html
Vendor URL:  www.openswan.org/download/CVE-2010-3302/CVE-2010-3302.txt (Links to External Site)
Cause:   Boundary error
Underlying OS:   Linux (Red Hat Enterprise)

Message History:   This archive entry is a follow-up to the message listed below.
Nov 17 2010 Openswan Buffer Overflows Let Remote Authenticated Gateways Execute Arbitrary Code


 Source Message Contents
Date:  Tue, 16 Nov 2010 13:29:43 -0500
Subject:  [RHSA-2010:0892-01] Moderate: openswan security update

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

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

Synopsis:          Moderate: openswan security update
Advisory ID:       RHSA-2010:0892-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2010-0892.html
Issue date:        2010-11-16
CVE Names:         CVE-2010-3302 CVE-2010-3308 CVE-2010-3752 
                   CVE-2010-3753 
=====================================================================

1. Summary:

Updated openswan packages that fix multiple security issues are now
available for Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having moderate
security impact. Common Vulnerability Scoring System (CVSS) base scores,
which give detailed severity ratings, are available for each vulnerability
from the CVE links in the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64
Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64
Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64
Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64

3. Description:

Openswan is a free implementation of Internet Protocol Security (IPsec)
and Internet Key Exchange (IKE). IPsec uses strong cryptography to provide
both authentication and encryption services. These services allow you to
build secure tunnels through untrusted networks.

Two buffer overflow flaws were found in the Openswan client-side XAUTH
handling code used when connecting to certain Cisco gateways. A malicious
or compromised VPN gateway could use these flaws to execute arbitrary code
on the connecting Openswan client. (CVE-2010-3302, CVE-2010-3308)

Two input sanitization flaws were found in the Openswan client-side
handling of Cisco gateway banners. A malicious or compromised VPN gateway
could use these flaws to execute arbitrary code on the connecting Openswan
client. (CVE-2010-3752, CVE-2010-3753)

Red Hat would like to thank the Openswan project for reporting these
issues. Upstream acknowledges D. Hugh Redelmeier and Paul Wouters as the
original reporters.

All users of openswan are advised to upgrade to these updated packages,
which contain backported patches to correct these issues. After installing
this update, the ipsec service will be restarted automatically.

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
http://kbase.redhat.com/faq/docs/DOC-11259

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

634264 - CVE-2010-3302 openswan: buffer overflow vulnerability in XAUTH client-side support
637924 - CVE-2010-3308 Openswan cisco banner option handling vulnerability
640711 - CVE-2010-3752 Openswan: Gateway arbitrary code execution via shell metacharacters in cisco_dns_info or cisco_domain_info data in packet
640715 - CVE-2010-3753 Openswan: Gateway arbitrary execution via shell metacharacters in the cisco_banner

6. Package List:

Red Hat Enterprise Linux Desktop (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/openswan-2.6.24-8.el6_0.1.src.rpm

i386:
openswan-2.6.24-8.el6_0.1.i686.rpm
openswan-debuginfo-2.6.24-8.el6_0.1.i686.rpm

x86_64:
openswan-2.6.24-8.el6_0.1.x86_64.rpm
openswan-debuginfo-2.6.24-8.el6_0.1.x86_64.rpm

Red Hat Enterprise Linux Desktop Optional (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/openswan-2.6.24-8.el6_0.1.src.rpm

i386:
openswan-debuginfo-2.6.24-8.el6_0.1.i686.rpm
openswan-doc-2.6.24-8.el6_0.1.i686.rpm

x86_64:
openswan-debuginfo-2.6.24-8.el6_0.1.x86_64.rpm
openswan-doc-2.6.24-8.el6_0.1.x86_64.rpm

Red Hat Enterprise Linux Server (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/openswan-2.6.24-8.el6_0.1.src.rpm

i386:
openswan-2.6.24-8.el6_0.1.i686.rpm
openswan-debuginfo-2.6.24-8.el6_0.1.i686.rpm

ppc64:
openswan-2.6.24-8.el6_0.1.ppc64.rpm
openswan-debuginfo-2.6.24-8.el6_0.1.ppc64.rpm

s390x:
openswan-2.6.24-8.el6_0.1.s390x.rpm
openswan-debuginfo-2.6.24-8.el6_0.1.s390x.rpm

x86_64:
openswan-2.6.24-8.el6_0.1.x86_64.rpm
openswan-debuginfo-2.6.24-8.el6_0.1.x86_64.rpm

Red Hat Enterprise Linux Server Optional (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/openswan-2.6.24-8.el6_0.1.src.rpm

i386:
openswan-debuginfo-2.6.24-8.el6_0.1.i686.rpm
openswan-doc-2.6.24-8.el6_0.1.i686.rpm

ppc64:
openswan-debuginfo-2.6.24-8.el6_0.1.ppc64.rpm
openswan-doc-2.6.24-8.el6_0.1.ppc64.rpm

s390x:
openswan-debuginfo-2.6.24-8.el6_0.1.s390x.rpm
openswan-doc-2.6.24-8.el6_0.1.s390x.rpm

x86_64:
openswan-debuginfo-2.6.24-8.el6_0.1.x86_64.rpm
openswan-doc-2.6.24-8.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/openswan-2.6.24-8.el6_0.1.src.rpm

i386:
openswan-2.6.24-8.el6_0.1.i686.rpm
openswan-debuginfo-2.6.24-8.el6_0.1.i686.rpm

x86_64:
openswan-2.6.24-8.el6_0.1.x86_64.rpm
openswan-debuginfo-2.6.24-8.el6_0.1.x86_64.rpm

Red Hat Enterprise Linux Workstation Optional (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/openswan-2.6.24-8.el6_0.1.src.rpm

i386:
openswan-debuginfo-2.6.24-8.el6_0.1.i686.rpm
openswan-doc-2.6.24-8.el6_0.1.i686.rpm

x86_64:
openswan-debuginfo-2.6.24-8.el6_0.1.x86_64.rpm
openswan-doc-2.6.24-8.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://www.redhat.com/security/team/key/#package

7. References:

https://www.redhat.com/security/data/cve/CVE-2010-3302.html
https://www.redhat.com/security/data/cve/CVE-2010-3308.html
https://www.redhat.com/security/data/cve/CVE-2010-3752.html
https://www.redhat.com/security/data/cve/CVE-2010-3753.html
http://www.redhat.com/security/updates/classification/#moderate

8. Contact:

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

Copyright 2010 Red Hat, Inc.
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