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Category:   Application (VPN)  >   OpenSSL Vendors:   OpenSSL.org
(Red Hat Issues Fix) OpenSSL Invalid TLS/DTLS Record Processing Lets Remote Users Deny Service
SecurityTracker Alert ID:  1027101
SecurityTracker URL:  http://securitytracker.com/id/1027101
CVE Reference:   CVE-2012-2333   (Links to External Site)
Date:  May 29 2012
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to versions 0.9.8x, 1.0.0j, 1.0.1c
Description:   A vulnerability was reported in OpenSSL. A remote user can cause denial of service conditions.

A remote user can send specially crafted TLS/DTLS records to cause denial of service conditions.

The CBC mode ciphersuites in TLS 1.1, 1.2 and DTLS are affected

Both clients and servers are affected.

DTLS is affected in all versions of OpenSSL.

TLS is affected in OpenSSL version 1.0.1 and later.

Codenomicon reported this vulnerability.

Impact:   A remote user can cause denial of service conditions.
Solution:   Red Hat has issued a fix.

The Red Hat advisory is available at:

https://rhn.redhat.com/errata/RHSA-2012-0699.html

Vendor URL:  www.openssl.org/news/secadv_20120510.txt (Links to External Site)
Cause:   Input validation 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.
May 11 2012 OpenSSL Invalid TLS/DTLS Record Processing Lets Remote Users Deny Service



 Source Message Contents

Subject:  [RHSA-2012:0699-01] Moderate: openssl security and bug fix update

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

Synopsis:          Moderate: openssl security and bug fix update
Advisory ID:       RHSA-2012:0699-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2012-0699.html
Issue date:        2012-05-29
CVE Names:         CVE-2012-2333 
=====================================================================

1. Summary:

Updated openssl packages that fix one security issue and one bug are now
available for Red Hat Enterprise Linux 5 and 6.

The Red Hat Security Response Team has rated this update as having moderate
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 Desktop Workstation (v. 5 client) - i386, x86_64
Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64
Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64
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 HPC Node (v. 6) - x86_64
Red Hat Enterprise Linux HPC Node Optional (v. 6) - 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:

OpenSSL is a toolkit that implements the Secure Sockets Layer (SSL v2/v3)
and Transport Layer Security (TLS v1) protocols, as well as a
full-strength, general purpose cryptography library.

An integer underflow flaw, leading to a buffer over-read, was found in the
way OpenSSL handled DTLS (Datagram Transport Layer Security) application
data record lengths when using a block cipher in CBC (cipher-block
chaining) mode. A malicious DTLS client or server could use this flaw to
crash its DTLS connection peer. (CVE-2012-2333)

Red Hat would like to thank the OpenSSL project for reporting this issue.
Upstream acknowledges Codenomicon as the original reporter.

On Red Hat Enterprise Linux 6, this update also fixes an uninitialized
variable use bug, introduced by the fix for CVE-2012-0884 (released via
RHSA-2012:0426). This bug could possibly cause an attempt to create an
encrypted message in the CMS (Cryptographic Message Syntax) format to fail.

All OpenSSL users should upgrade to these updated packages, which contain a
backported patch to resolve these issues. For the update to take effect,
all services linked to the OpenSSL library must be restarted, or the system
rebooted.

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/knowledge/articles/11258

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

820686 - CVE-2012-2333 openssl: record length handling integer underflow

6. Package List:

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

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/openssl-0.9.8e-22.el5_8.4.src.rpm

i386:
openssl-0.9.8e-22.el5_8.4.i386.rpm
openssl-0.9.8e-22.el5_8.4.i686.rpm
openssl-debuginfo-0.9.8e-22.el5_8.4.i386.rpm
openssl-debuginfo-0.9.8e-22.el5_8.4.i686.rpm
openssl-perl-0.9.8e-22.el5_8.4.i386.rpm

x86_64:
openssl-0.9.8e-22.el5_8.4.i686.rpm
openssl-0.9.8e-22.el5_8.4.x86_64.rpm
openssl-debuginfo-0.9.8e-22.el5_8.4.i686.rpm
openssl-debuginfo-0.9.8e-22.el5_8.4.x86_64.rpm
openssl-perl-0.9.8e-22.el5_8.4.x86_64.rpm

RHEL Desktop Workstation (v. 5 client):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/openssl-0.9.8e-22.el5_8.4.src.rpm

i386:
openssl-debuginfo-0.9.8e-22.el5_8.4.i386.rpm
openssl-devel-0.9.8e-22.el5_8.4.i386.rpm

x86_64:
openssl-debuginfo-0.9.8e-22.el5_8.4.i386.rpm
openssl-debuginfo-0.9.8e-22.el5_8.4.x86_64.rpm
openssl-devel-0.9.8e-22.el5_8.4.i386.rpm
openssl-devel-0.9.8e-22.el5_8.4.x86_64.rpm

Red Hat Enterprise Linux (v. 5 server):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/openssl-0.9.8e-22.el5_8.4.src.rpm

i386:
openssl-0.9.8e-22.el5_8.4.i386.rpm
openssl-0.9.8e-22.el5_8.4.i686.rpm
openssl-debuginfo-0.9.8e-22.el5_8.4.i386.rpm
openssl-debuginfo-0.9.8e-22.el5_8.4.i686.rpm
openssl-devel-0.9.8e-22.el5_8.4.i386.rpm
openssl-perl-0.9.8e-22.el5_8.4.i386.rpm

ia64:
openssl-0.9.8e-22.el5_8.4.i686.rpm
openssl-0.9.8e-22.el5_8.4.ia64.rpm
openssl-debuginfo-0.9.8e-22.el5_8.4.i686.rpm
openssl-debuginfo-0.9.8e-22.el5_8.4.ia64.rpm
openssl-devel-0.9.8e-22.el5_8.4.ia64.rpm
openssl-perl-0.9.8e-22.el5_8.4.ia64.rpm

ppc:
openssl-0.9.8e-22.el5_8.4.ppc.rpm
openssl-0.9.8e-22.el5_8.4.ppc64.rpm
openssl-debuginfo-0.9.8e-22.el5_8.4.ppc.rpm
openssl-debuginfo-0.9.8e-22.el5_8.4.ppc64.rpm
openssl-devel-0.9.8e-22.el5_8.4.ppc.rpm
openssl-devel-0.9.8e-22.el5_8.4.ppc64.rpm
openssl-perl-0.9.8e-22.el5_8.4.ppc.rpm

s390x:
openssl-0.9.8e-22.el5_8.4.s390.rpm
openssl-0.9.8e-22.el5_8.4.s390x.rpm
openssl-debuginfo-0.9.8e-22.el5_8.4.s390.rpm
openssl-debuginfo-0.9.8e-22.el5_8.4.s390x.rpm
openssl-devel-0.9.8e-22.el5_8.4.s390.rpm
openssl-devel-0.9.8e-22.el5_8.4.s390x.rpm
openssl-perl-0.9.8e-22.el5_8.4.s390x.rpm

x86_64:
openssl-0.9.8e-22.el5_8.4.i686.rpm
openssl-0.9.8e-22.el5_8.4.x86_64.rpm
openssl-debuginfo-0.9.8e-22.el5_8.4.i386.rpm
openssl-debuginfo-0.9.8e-22.el5_8.4.i686.rpm
openssl-debuginfo-0.9.8e-22.el5_8.4.x86_64.rpm
openssl-devel-0.9.8e-22.el5_8.4.i386.rpm
openssl-devel-0.9.8e-22.el5_8.4.x86_64.rpm
openssl-perl-0.9.8e-22.el5_8.4.x86_64.rpm

Red Hat Enterprise Linux Desktop (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/openssl-1.0.0-20.el6_2.5.src.rpm

i386:
openssl-1.0.0-20.el6_2.5.i686.rpm
openssl-debuginfo-1.0.0-20.el6_2.5.i686.rpm

x86_64:
openssl-1.0.0-20.el6_2.5.i686.rpm
openssl-1.0.0-20.el6_2.5.x86_64.rpm
openssl-debuginfo-1.0.0-20.el6_2.5.i686.rpm
openssl-debuginfo-1.0.0-20.el6_2.5.x86_64.rpm

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

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/openssl-1.0.0-20.el6_2.5.src.rpm

i386:
openssl-debuginfo-1.0.0-20.el6_2.5.i686.rpm
openssl-devel-1.0.0-20.el6_2.5.i686.rpm
openssl-perl-1.0.0-20.el6_2.5.i686.rpm
openssl-static-1.0.0-20.el6_2.5.i686.rpm

x86_64:
openssl-debuginfo-1.0.0-20.el6_2.5.i686.rpm
openssl-debuginfo-1.0.0-20.el6_2.5.x86_64.rpm
openssl-devel-1.0.0-20.el6_2.5.i686.rpm
openssl-devel-1.0.0-20.el6_2.5.x86_64.rpm
openssl-perl-1.0.0-20.el6_2.5.x86_64.rpm
openssl-static-1.0.0-20.el6_2.5.x86_64.rpm

Red Hat Enterprise Linux HPC Node (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6ComputeNode/en/os/SRPMS/openssl-1.0.0-20.el6_2.5.src.rpm

x86_64:
openssl-1.0.0-20.el6_2.5.i686.rpm
openssl-1.0.0-20.el6_2.5.x86_64.rpm
openssl-debuginfo-1.0.0-20.el6_2.5.i686.rpm
openssl-debuginfo-1.0.0-20.el6_2.5.x86_64.rpm

Red Hat Enterprise Linux HPC Node Optional (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6ComputeNode/en/os/SRPMS/openssl-1.0.0-20.el6_2.5.src.rpm

x86_64:
openssl-debuginfo-1.0.0-20.el6_2.5.i686.rpm
openssl-debuginfo-1.0.0-20.el6_2.5.x86_64.rpm
openssl-devel-1.0.0-20.el6_2.5.i686.rpm
openssl-devel-1.0.0-20.el6_2.5.x86_64.rpm
openssl-perl-1.0.0-20.el6_2.5.x86_64.rpm
openssl-static-1.0.0-20.el6_2.5.x86_64.rpm

Red Hat Enterprise Linux Server (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/openssl-1.0.0-20.el6_2.5.src.rpm

i386:
openssl-1.0.0-20.el6_2.5.i686.rpm
openssl-debuginfo-1.0.0-20.el6_2.5.i686.rpm
openssl-devel-1.0.0-20.el6_2.5.i686.rpm

ppc64:
openssl-1.0.0-20.el6_2.5.ppc.rpm
openssl-1.0.0-20.el6_2.5.ppc64.rpm
openssl-debuginfo-1.0.0-20.el6_2.5.ppc.rpm
openssl-debuginfo-1.0.0-20.el6_2.5.ppc64.rpm
openssl-devel-1.0.0-20.el6_2.5.ppc.rpm
openssl-devel-1.0.0-20.el6_2.5.ppc64.rpm

s390x:
openssl-1.0.0-20.el6_2.5.s390.rpm
openssl-1.0.0-20.el6_2.5.s390x.rpm
openssl-debuginfo-1.0.0-20.el6_2.5.s390.rpm
openssl-debuginfo-1.0.0-20.el6_2.5.s390x.rpm
openssl-devel-1.0.0-20.el6_2.5.s390.rpm
openssl-devel-1.0.0-20.el6_2.5.s390x.rpm

x86_64:
openssl-1.0.0-20.el6_2.5.i686.rpm
openssl-1.0.0-20.el6_2.5.x86_64.rpm
openssl-debuginfo-1.0.0-20.el6_2.5.i686.rpm
openssl-debuginfo-1.0.0-20.el6_2.5.x86_64.rpm
openssl-devel-1.0.0-20.el6_2.5.i686.rpm
openssl-devel-1.0.0-20.el6_2.5.x86_64.rpm

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

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/openssl-1.0.0-20.el6_2.5.src.rpm

i386:
openssl-debuginfo-1.0.0-20.el6_2.5.i686.rpm
openssl-perl-1.0.0-20.el6_2.5.i686.rpm
openssl-static-1.0.0-20.el6_2.5.i686.rpm

ppc64:
openssl-debuginfo-1.0.0-20.el6_2.5.ppc64.rpm
openssl-perl-1.0.0-20.el6_2.5.ppc64.rpm
openssl-static-1.0.0-20.el6_2.5.ppc64.rpm

s390x:
openssl-debuginfo-1.0.0-20.el6_2.5.s390x.rpm
openssl-perl-1.0.0-20.el6_2.5.s390x.rpm
openssl-static-1.0.0-20.el6_2.5.s390x.rpm

x86_64:
openssl-debuginfo-1.0.0-20.el6_2.5.x86_64.rpm
openssl-perl-1.0.0-20.el6_2.5.x86_64.rpm
openssl-static-1.0.0-20.el6_2.5.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/openssl-1.0.0-20.el6_2.5.src.rpm

i386:
openssl-1.0.0-20.el6_2.5.i686.rpm
openssl-debuginfo-1.0.0-20.el6_2.5.i686.rpm
openssl-devel-1.0.0-20.el6_2.5.i686.rpm

x86_64:
openssl-1.0.0-20.el6_2.5.i686.rpm
openssl-1.0.0-20.el6_2.5.x86_64.rpm
openssl-debuginfo-1.0.0-20.el6_2.5.i686.rpm
openssl-debuginfo-1.0.0-20.el6_2.5.x86_64.rpm
openssl-devel-1.0.0-20.el6_2.5.i686.rpm
openssl-devel-1.0.0-20.el6_2.5.x86_64.rpm

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

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/openssl-1.0.0-20.el6_2.5.src.rpm

i386:
openssl-debuginfo-1.0.0-20.el6_2.5.i686.rpm
openssl-perl-1.0.0-20.el6_2.5.i686.rpm
openssl-static-1.0.0-20.el6_2.5.i686.rpm

x86_64:
openssl-debuginfo-1.0.0-20.el6_2.5.x86_64.rpm
openssl-perl-1.0.0-20.el6_2.5.x86_64.rpm
openssl-static-1.0.0-20.el6_2.5.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-2012-2333.html
https://access.redhat.com/security/updates/classification/#moderate
https://rhn.redhat.com/errata/RHSA-2012-0426.html

8. Contact:

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

Copyright 2012 Red Hat, Inc.
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