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[RHSA-2015:1197-01] Moderate: openssl security update

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Red Hat Security Advisory

 

Synopsis: Moderate: openssl security update

Advisory ID: RHSA-2015:1197-01

Product: Red Hat Enterprise Linux

Advisory URL: https://rhn.redhat.com/errata/RHSA-2015-1197.html

Issue date: 2015-06-30

CVE Names: CVE-2015-1789 CVE-2015-1790 CVE-2015-4000

=====================================================================

 

1. Summary:

 

Updated openssl packages that fix three security issues are now available

for Red Hat Enterprise Linux 5.

 

Red Hat Product Security 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:

 

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

 

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 out-of-bounds read flaw was found in the X509_cmp_time() function of

OpenSSL. A specially crafted X.509 certificate or a Certificate Revocation

List (CRL) could possibly cause a TLS/SSL server or client using OpenSSL

to crash. (CVE-2015-1789)

 

A NULL pointer dereference was found in the way OpenSSL handled certain

PKCS#7 inputs. A specially crafted PKCS#7 input with missing

EncryptedContent data could cause an application using OpenSSL to crash.

(CVE-2015-1790)

 

A flaw was found in the way the TLS protocol composes the Diffie-Hellman

(DH) key exchange. A man-in-the-middle attacker could use this flaw to

force the use of weak 512 bit export-grade keys during the key exchange,

allowing them to decrypt all traffic. (CVE-2015-4000)

 

Note: This update forces the TLS/SSL client implementation in OpenSSL to

reject DH key sizes below 768 bits, which prevents sessions to be

downgraded to export-grade keys. Future updates may raise this limit to

1024 bits.

 

Red Hat would like to thank the OpenSSL project for reporting CVE-2015-1789

and CVE-2015-1790. Upstream acknowledges Robert Swiecki and Hanno Böck as

the original reporters of CVE-2015-1789, and Michal Zalewski as the

original reporter of CVE-2015-1790.

 

All openssl users are advised to upgrade to these updated packages, which

contain backported patches to correct 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.

 

For details on how to apply this update, refer to:

 

https://access.redhat.com/articles/11258

 

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

 

1223211 - CVE-2015-4000 LOGJAM: TLS connections which support export grade DHE key-exchange are vulnerable to MITM attacks

1228603 - CVE-2015-1789 OpenSSL: out-of-bounds read in X509_cmp_time

1228604 - CVE-2015-1790 OpenSSL: PKCS7 crash with missing EnvelopedContent

 

6. Package List:

 

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

 

Source:

openssl-0.9.8e-36.el5_11.src.rpm

 

i386:

openssl-0.9.8e-36.el5_11.i386.rpm

openssl-0.9.8e-36.el5_11.i686.rpm

openssl-debuginfo-0.9.8e-36.el5_11.i386.rpm

openssl-debuginfo-0.9.8e-36.el5_11.i686.rpm

openssl-perl-0.9.8e-36.el5_11.i386.rpm

 

x86_64:

openssl-0.9.8e-36.el5_11.i686.rpm

openssl-0.9.8e-36.el5_11.x86_64.rpm

openssl-debuginfo-0.9.8e-36.el5_11.i686.rpm

openssl-debuginfo-0.9.8e-36.el5_11.x86_64.rpm

openssl-perl-0.9.8e-36.el5_11.x86_64.rpm

 

RHEL Desktop Workstation (v. 5 client):

 

Source:

openssl-0.9.8e-36.el5_11.src.rpm

 

i386:

openssl-debuginfo-0.9.8e-36.el5_11.i386.rpm

openssl-devel-0.9.8e-36.el5_11.i386.rpm

 

x86_64:

openssl-debuginfo-0.9.8e-36.el5_11.i386.rpm

openssl-debuginfo-0.9.8e-36.el5_11.x86_64.rpm

openssl-devel-0.9.8e-36.el5_11.i386.rpm

openssl-devel-0.9.8e-36.el5_11.x86_64.rpm

 

Red Hat Enterprise Linux (v. 5 server):

 

Source:

openssl-0.9.8e-36.el5_11.src.rpm

 

i386:

openssl-0.9.8e-36.el5_11.i386.rpm

openssl-0.9.8e-36.el5_11.i686.rpm

openssl-debuginfo-0.9.8e-36.el5_11.i386.rpm

openssl-debuginfo-0.9.8e-36.el5_11.i686.rpm

openssl-devel-0.9.8e-36.el5_11.i386.rpm

openssl-perl-0.9.8e-36.el5_11.i386.rpm

 

ia64:

openssl-0.9.8e-36.el5_11.i686.rpm

openssl-0.9.8e-36.el5_11.ia64.rpm

openssl-debuginfo-0.9.8e-36.el5_11.i686.rpm

openssl-debuginfo-0.9.8e-36.el5_11.ia64.rpm

openssl-devel-0.9.8e-36.el5_11.ia64.rpm

openssl-perl-0.9.8e-36.el5_11.ia64.rpm

 

ppc:

openssl-0.9.8e-36.el5_11.ppc.rpm

openssl-0.9.8e-36.el5_11.ppc64.rpm

openssl-debuginfo-0.9.8e-36.el5_11.ppc.rpm

openssl-debuginfo-0.9.8e-36.el5_11.ppc64.rpm

openssl-devel-0.9.8e-36.el5_11.ppc.rpm

openssl-devel-0.9.8e-36.el5_11.ppc64.rpm

openssl-perl-0.9.8e-36.el5_11.ppc.rpm

 

s390x:

openssl-0.9.8e-36.el5_11.s390.rpm

openssl-0.9.8e-36.el5_11.s390x.rpm

openssl-debuginfo-0.9.8e-36.el5_11.s390.rpm

openssl-debuginfo-0.9.8e-36.el5_11.s390x.rpm

openssl-devel-0.9.8e-36.el5_11.s390.rpm

openssl-devel-0.9.8e-36.el5_11.s390x.rpm

openssl-perl-0.9.8e-36.el5_11.s390x.rpm

 

x86_64:

openssl-0.9.8e-36.el5_11.i686.rpm

openssl-0.9.8e-36.el5_11.x86_64.rpm

openssl-debuginfo-0.9.8e-36.el5_11.i386.rpm

openssl-debuginfo-0.9.8e-36.el5_11.i686.rpm

openssl-debuginfo-0.9.8e-36.el5_11.x86_64.rpm

openssl-devel-0.9.8e-36.el5_11.i386.rpm

openssl-devel-0.9.8e-36.el5_11.x86_64.rpm

openssl-perl-0.9.8e-36.el5_11.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/

 

7. References:

 

https://access.redhat.com/security/cve/CVE-2015-1789

https://access.redhat.com/security/cve/CVE-2015-1790

https://access.redhat.com/security/cve/CVE-2015-4000

https://access.redhat.com/security/updates/classification/#moderate

https://www.openssl.org/news/secadv_20150611.txt

 

8. Contact:

 

The Red Hat security contact is . More contact

details at https://access.redhat.com/security/team/contact/

 

Copyright 2015 Red Hat, Inc.

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