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Category:   Application (VPN)  >   OpenSSL Vendors:   OpenSSL.org
(Red Hat Issues Fix) OpenSSL Multiple Bugs Let Remote Users Deny Service and Obtain Potentially Sensitive Information
SecurityTracker Alert ID:  1037858
SecurityTracker URL:  http://securitytracker.com/id/1037858
CVE Reference:   CVE-2017-3731   (Links to External Site)
Date:  Feb 20 2017
Impact:   Denial of service via network, Disclosure of system information, Disclosure of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to versions 1.0.2k, 1.1.0d
Description:   Several vulnerabilities were reported in OpenSSL. A remote user can cause the target service to crash. A remote user can obtain potentially sensitive information on the target system.

A remote user can send a specially crafted truncated packet to the target server or client running on a 32-bit host and using a specific cipher to trigger an out-of-bounds memory read error and cause the service to crash [CVE-2017-3731]. CHACHA20/POLY1305 is affected on version 1.1.0. RC4-MD5 is affected on version 1.0.2.

The vendor was notified on November 13, 2016.

Robert Swiecki of Google reported this vulnerability.

A remote server can supply specially crafted parameters for a DHE or ECDHE key exchange to trigger a null pointer dereference and cause the target client service to crash [CVE-2017-3730]. Version 1.1.0 is affected.

The vendor was notified on January 14, 2017.

Guido Vranken reported this vulnerability.

A remote user can exploit a carry propagation flaw in BN_mod_exp() to potentially determine information about the private key in certain situations [CVE-2017-3732].

Systems configured for persistent DH parameters and sharing a private key between multiple clients are affected.

The vendor was notified on January 15, 201.

The OSS-Fuzz project reported this vulnerability.

Impact:   A remote user can cause the target service to crash.

A remote user can obtain potentially sensitive information on the target system.

Solution:   Red Hat has issued a fix for CVE-2017-3731.

The Red Hat advisory is available at:

https://rhn.redhat.com/errata/RHSA-2017-0286.html

Vendor URL:  rhn.redhat.com/errata/RHSA-2017-0286.html (Links to External Site)
Cause:   Access control error
Underlying OS:  Linux (Red Hat Enterprise)
Underlying OS Comments:  6, 7

Message History:   This archive entry is a follow-up to the message listed below.
Jan 26 2017 OpenSSL Multiple Bugs Let Remote Users Deny Service and Obtain Potentially Sensitive Information



 Source Message Contents

Date:  Mon, 20 Feb 2017 11:05:22 +0000
Subject:  [RHSA-2017:0286-01] Moderate: openssl security update

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

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

Synopsis:          Moderate: openssl security update
Advisory ID:       RHSA-2017:0286-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2017-0286.html
Issue date:        2017-02-20
CVE Names:         CVE-2016-8610 CVE-2017-3731 
=====================================================================

1. Summary:

An update for openssl is now available for Red Hat Enterprise Linux 6 and
Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact
of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which
gives a detailed severity rating, is available for each vulnerability from
the CVE link(s) in the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Client (v. 7) - x86_64
Red Hat Enterprise Linux Client Optional (v. 7) - x86_64
Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64
Red Hat Enterprise Linux ComputeNode Optional (v. 7) - 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 (v. 7) - aarch64, ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 7) - aarch64, ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64
Red Hat Enterprise Linux Workstation (v. 7) - x86_64
Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64
Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64

3. Description:

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

Security Fix(es):

* An integer underflow leading to an out of bounds read flaw was found in
OpenSSL. A remote attacker could possibly use this flaw to crash a 32-bit
TLS/SSL server or client using OpenSSL if it used the RC4-MD5 cipher suite.
(CVE-2017-3731)

* A denial of service flaw was found in the way the TLS/SSL protocol
defined processing of ALERT packets during a connection handshake. A remote
attacker could use this flaw to make a TLS/SSL server consume an excessive
amount of CPU and fail to accept connections form other clients.
(CVE-2016-8610)

4. Solution:

For details on how to apply this update, which includes the changes
described in this advisory, refer to:

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

For the update to take effect, all services linked to the OpenSSL library
must be restarted, or the system rebooted.

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

1384743 - CVE-2016-8610 SSL/TLS: Malformed plain-text ALERT packets could cause remote DoS
1416852 - CVE-2017-3731 openssl: Truncated packet could crash via OOB read

6. Package List:

Red Hat Enterprise Linux Desktop (v. 6):

Source:
openssl-1.0.1e-48.el6_8.4.src.rpm

i386:
openssl-1.0.1e-48.el6_8.4.i686.rpm
openssl-debuginfo-1.0.1e-48.el6_8.4.i686.rpm

x86_64:
openssl-1.0.1e-48.el6_8.4.i686.rpm
openssl-1.0.1e-48.el6_8.4.x86_64.rpm
openssl-debuginfo-1.0.1e-48.el6_8.4.i686.rpm
openssl-debuginfo-1.0.1e-48.el6_8.4.x86_64.rpm

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

i386:
openssl-debuginfo-1.0.1e-48.el6_8.4.i686.rpm
openssl-devel-1.0.1e-48.el6_8.4.i686.rpm
openssl-perl-1.0.1e-48.el6_8.4.i686.rpm
openssl-static-1.0.1e-48.el6_8.4.i686.rpm

x86_64:
openssl-debuginfo-1.0.1e-48.el6_8.4.i686.rpm
openssl-debuginfo-1.0.1e-48.el6_8.4.x86_64.rpm
openssl-devel-1.0.1e-48.el6_8.4.i686.rpm
openssl-devel-1.0.1e-48.el6_8.4.x86_64.rpm
openssl-perl-1.0.1e-48.el6_8.4.x86_64.rpm
openssl-static-1.0.1e-48.el6_8.4.x86_64.rpm

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

Source:
openssl-1.0.1e-48.el6_8.4.src.rpm

x86_64:
openssl-1.0.1e-48.el6_8.4.i686.rpm
openssl-1.0.1e-48.el6_8.4.x86_64.rpm
openssl-debuginfo-1.0.1e-48.el6_8.4.i686.rpm
openssl-debuginfo-1.0.1e-48.el6_8.4.x86_64.rpm

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

x86_64:
openssl-debuginfo-1.0.1e-48.el6_8.4.i686.rpm
openssl-debuginfo-1.0.1e-48.el6_8.4.x86_64.rpm
openssl-devel-1.0.1e-48.el6_8.4.i686.rpm
openssl-devel-1.0.1e-48.el6_8.4.x86_64.rpm
openssl-perl-1.0.1e-48.el6_8.4.x86_64.rpm
openssl-static-1.0.1e-48.el6_8.4.x86_64.rpm

Red Hat Enterprise Linux Server (v. 6):

Source:
openssl-1.0.1e-48.el6_8.4.src.rpm

i386:
openssl-1.0.1e-48.el6_8.4.i686.rpm
openssl-debuginfo-1.0.1e-48.el6_8.4.i686.rpm
openssl-devel-1.0.1e-48.el6_8.4.i686.rpm

ppc64:
openssl-1.0.1e-48.el6_8.4.ppc.rpm
openssl-1.0.1e-48.el6_8.4.ppc64.rpm
openssl-debuginfo-1.0.1e-48.el6_8.4.ppc.rpm
openssl-debuginfo-1.0.1e-48.el6_8.4.ppc64.rpm
openssl-devel-1.0.1e-48.el6_8.4.ppc.rpm
openssl-devel-1.0.1e-48.el6_8.4.ppc64.rpm

s390x:
openssl-1.0.1e-48.el6_8.4.s390.rpm
openssl-1.0.1e-48.el6_8.4.s390x.rpm
openssl-debuginfo-1.0.1e-48.el6_8.4.s390.rpm
openssl-debuginfo-1.0.1e-48.el6_8.4.s390x.rpm
openssl-devel-1.0.1e-48.el6_8.4.s390.rpm
openssl-devel-1.0.1e-48.el6_8.4.s390x.rpm

x86_64:
openssl-1.0.1e-48.el6_8.4.i686.rpm
openssl-1.0.1e-48.el6_8.4.x86_64.rpm
openssl-debuginfo-1.0.1e-48.el6_8.4.i686.rpm
openssl-debuginfo-1.0.1e-48.el6_8.4.x86_64.rpm
openssl-devel-1.0.1e-48.el6_8.4.i686.rpm
openssl-devel-1.0.1e-48.el6_8.4.x86_64.rpm

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

i386:
openssl-debuginfo-1.0.1e-48.el6_8.4.i686.rpm
openssl-perl-1.0.1e-48.el6_8.4.i686.rpm
openssl-static-1.0.1e-48.el6_8.4.i686.rpm

ppc64:
openssl-debuginfo-1.0.1e-48.el6_8.4.ppc64.rpm
openssl-perl-1.0.1e-48.el6_8.4.ppc64.rpm
openssl-static-1.0.1e-48.el6_8.4.ppc64.rpm

s390x:
openssl-debuginfo-1.0.1e-48.el6_8.4.s390x.rpm
openssl-perl-1.0.1e-48.el6_8.4.s390x.rpm
openssl-static-1.0.1e-48.el6_8.4.s390x.rpm

x86_64:
openssl-debuginfo-1.0.1e-48.el6_8.4.x86_64.rpm
openssl-perl-1.0.1e-48.el6_8.4.x86_64.rpm
openssl-static-1.0.1e-48.el6_8.4.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 6):

Source:
openssl-1.0.1e-48.el6_8.4.src.rpm

i386:
openssl-1.0.1e-48.el6_8.4.i686.rpm
openssl-debuginfo-1.0.1e-48.el6_8.4.i686.rpm
openssl-devel-1.0.1e-48.el6_8.4.i686.rpm

x86_64:
openssl-1.0.1e-48.el6_8.4.i686.rpm
openssl-1.0.1e-48.el6_8.4.x86_64.rpm
openssl-debuginfo-1.0.1e-48.el6_8.4.i686.rpm
openssl-debuginfo-1.0.1e-48.el6_8.4.x86_64.rpm
openssl-devel-1.0.1e-48.el6_8.4.i686.rpm
openssl-devel-1.0.1e-48.el6_8.4.x86_64.rpm

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

i386:
openssl-debuginfo-1.0.1e-48.el6_8.4.i686.rpm
openssl-perl-1.0.1e-48.el6_8.4.i686.rpm
openssl-static-1.0.1e-48.el6_8.4.i686.rpm

x86_64:
openssl-debuginfo-1.0.1e-48.el6_8.4.x86_64.rpm
openssl-perl-1.0.1e-48.el6_8.4.x86_64.rpm
openssl-static-1.0.1e-48.el6_8.4.x86_64.rpm

Red Hat Enterprise Linux Client (v. 7):

Source:
openssl-1.0.1e-60.el7_3.1.src.rpm

x86_64:
openssl-1.0.1e-60.el7_3.1.x86_64.rpm
openssl-debuginfo-1.0.1e-60.el7_3.1.i686.rpm
openssl-debuginfo-1.0.1e-60.el7_3.1.x86_64.rpm
openssl-libs-1.0.1e-60.el7_3.1.i686.rpm
openssl-libs-1.0.1e-60.el7_3.1.x86_64.rpm

Red Hat Enterprise Linux Client Optional (v. 7):

x86_64:
openssl-debuginfo-1.0.1e-60.el7_3.1.i686.rpm
openssl-debuginfo-1.0.1e-60.el7_3.1.x86_64.rpm
openssl-devel-1.0.1e-60.el7_3.1.i686.rpm
openssl-devel-1.0.1e-60.el7_3.1.x86_64.rpm
openssl-perl-1.0.1e-60.el7_3.1.x86_64.rpm
openssl-static-1.0.1e-60.el7_3.1.i686.rpm
openssl-static-1.0.1e-60.el7_3.1.x86_64.rpm

Red Hat Enterprise Linux ComputeNode (v. 7):

Source:
openssl-1.0.1e-60.el7_3.1.src.rpm

x86_64:
openssl-1.0.1e-60.el7_3.1.x86_64.rpm
openssl-debuginfo-1.0.1e-60.el7_3.1.i686.rpm
openssl-debuginfo-1.0.1e-60.el7_3.1.x86_64.rpm
openssl-libs-1.0.1e-60.el7_3.1.i686.rpm
openssl-libs-1.0.1e-60.el7_3.1.x86_64.rpm

Red Hat Enterprise Linux ComputeNode Optional (v. 7):

x86_64:
openssl-debuginfo-1.0.1e-60.el7_3.1.i686.rpm
openssl-debuginfo-1.0.1e-60.el7_3.1.x86_64.rpm
openssl-devel-1.0.1e-60.el7_3.1.i686.rpm
openssl-devel-1.0.1e-60.el7_3.1.x86_64.rpm
openssl-perl-1.0.1e-60.el7_3.1.x86_64.rpm
openssl-static-1.0.1e-60.el7_3.1.i686.rpm
openssl-static-1.0.1e-60.el7_3.1.x86_64.rpm

Red Hat Enterprise Linux Server (v. 7):

Source:
openssl-1.0.1e-60.el7_3.1.src.rpm

aarch64:
openssl-1.0.1e-60.el7_3.1.aarch64.rpm
openssl-debuginfo-1.0.1e-60.el7_3.1.aarch64.rpm
openssl-devel-1.0.1e-60.el7_3.1.aarch64.rpm
openssl-libs-1.0.1e-60.el7_3.1.aarch64.rpm

ppc64:
openssl-1.0.1e-60.el7_3.1.ppc64.rpm
openssl-debuginfo-1.0.1e-60.el7_3.1.ppc.rpm
openssl-debuginfo-1.0.1e-60.el7_3.1.ppc64.rpm
openssl-devel-1.0.1e-60.el7_3.1.ppc.rpm
openssl-devel-1.0.1e-60.el7_3.1.ppc64.rpm
openssl-libs-1.0.1e-60.el7_3.1.ppc.rpm
openssl-libs-1.0.1e-60.el7_3.1.ppc64.rpm

ppc64le:
openssl-1.0.1e-60.el7_3.1.ppc64le.rpm
openssl-debuginfo-1.0.1e-60.el7_3.1.ppc64le.rpm
openssl-devel-1.0.1e-60.el7_3.1.ppc64le.rpm
openssl-libs-1.0.1e-60.el7_3.1.ppc64le.rpm

s390x:
openssl-1.0.1e-60.el7_3.1.s390x.rpm
openssl-debuginfo-1.0.1e-60.el7_3.1.s390.rpm
openssl-debuginfo-1.0.1e-60.el7_3.1.s390x.rpm
openssl-devel-1.0.1e-60.el7_3.1.s390.rpm
openssl-devel-1.0.1e-60.el7_3.1.s390x.rpm
openssl-libs-1.0.1e-60.el7_3.1.s390.rpm
openssl-libs-1.0.1e-60.el7_3.1.s390x.rpm

x86_64:
openssl-1.0.1e-60.el7_3.1.x86_64.rpm
openssl-debuginfo-1.0.1e-60.el7_3.1.i686.rpm
openssl-debuginfo-1.0.1e-60.el7_3.1.x86_64.rpm
openssl-devel-1.0.1e-60.el7_3.1.i686.rpm
openssl-devel-1.0.1e-60.el7_3.1.x86_64.rpm
openssl-libs-1.0.1e-60.el7_3.1.i686.rpm
openssl-libs-1.0.1e-60.el7_3.1.x86_64.rpm

Red Hat Enterprise Linux Server Optional (v. 7):

aarch64:
openssl-debuginfo-1.0.1e-60.el7_3.1.aarch64.rpm
openssl-perl-1.0.1e-60.el7_3.1.aarch64.rpm
openssl-static-1.0.1e-60.el7_3.1.aarch64.rpm

ppc64:
openssl-debuginfo-1.0.1e-60.el7_3.1.ppc.rpm
openssl-debuginfo-1.0.1e-60.el7_3.1.ppc64.rpm
openssl-perl-1.0.1e-60.el7_3.1.ppc64.rpm
openssl-static-1.0.1e-60.el7_3.1.ppc.rpm
openssl-static-1.0.1e-60.el7_3.1.ppc64.rpm

ppc64le:
openssl-debuginfo-1.0.1e-60.el7_3.1.ppc64le.rpm
openssl-perl-1.0.1e-60.el7_3.1.ppc64le.rpm
openssl-static-1.0.1e-60.el7_3.1.ppc64le.rpm

s390x:
openssl-debuginfo-1.0.1e-60.el7_3.1.s390.rpm
openssl-debuginfo-1.0.1e-60.el7_3.1.s390x.rpm
openssl-perl-1.0.1e-60.el7_3.1.s390x.rpm
openssl-static-1.0.1e-60.el7_3.1.s390.rpm
openssl-static-1.0.1e-60.el7_3.1.s390x.rpm

x86_64:
openssl-debuginfo-1.0.1e-60.el7_3.1.i686.rpm
openssl-debuginfo-1.0.1e-60.el7_3.1.x86_64.rpm
openssl-perl-1.0.1e-60.el7_3.1.x86_64.rpm
openssl-static-1.0.1e-60.el7_3.1.i686.rpm
openssl-static-1.0.1e-60.el7_3.1.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 7):

Source:
openssl-1.0.1e-60.el7_3.1.src.rpm

x86_64:
openssl-1.0.1e-60.el7_3.1.x86_64.rpm
openssl-debuginfo-1.0.1e-60.el7_3.1.i686.rpm
openssl-debuginfo-1.0.1e-60.el7_3.1.x86_64.rpm
openssl-devel-1.0.1e-60.el7_3.1.i686.rpm
openssl-devel-1.0.1e-60.el7_3.1.x86_64.rpm
openssl-libs-1.0.1e-60.el7_3.1.i686.rpm
openssl-libs-1.0.1e-60.el7_3.1.x86_64.rpm

Red Hat Enterprise Linux Workstation Optional (v. 7):

x86_64:
openssl-debuginfo-1.0.1e-60.el7_3.1.i686.rpm
openssl-debuginfo-1.0.1e-60.el7_3.1.x86_64.rpm
openssl-perl-1.0.1e-60.el7_3.1.x86_64.rpm
openssl-static-1.0.1e-60.el7_3.1.i686.rpm
openssl-static-1.0.1e-60.el7_3.1.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/

7. References:

https://access.redhat.com/security/cve/CVE-2016-8610
https://access.redhat.com/security/cve/CVE-2017-3731
https://access.redhat.com/security/updates/classification/#moderate
https://www.openssl.org/news/secadv/20170126.txt

8. Contact:

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

Copyright 2017 Red Hat, Inc.
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