An updated gnupg package that fixes one security issue is now available for Red Hat Enterprise Linux 5. The Red Hat Security Response Team has rated this update as having moderate security impact. A Common Vulnerability Scoring System (CVSS) base score,

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

Synopsis:          Moderate: gnupg security update
Advisory ID:       RHSA-2014:0016-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2014:0016.html
Issue date:        2014-01-08
CVE Names:         CVE-2013-4576 
====================================================================
1. Summary:

An updated gnupg package that fixes one security issue is now available for
Red Hat Enterprise Linux 5.

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:

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:

The GNU Privacy Guard (GnuPG or GPG) is a tool for encrypting data and
creating digital signatures, compliant with the proposed OpenPGP Internet
standard and the S/MIME standard.

It was found that GnuPG was vulnerable to side-channel attacks via acoustic
cryptanalysis. An attacker in close range to a target system that is
decrypting ciphertexts could possibly use this flaw to recover the RSA
secret key from that system. (CVE-2013-4576)

Red Hat would like to thank Werner Koch of GnuPG upstream for reporting
this issue. Upstream acknowledges Genkin, Shamir, and Tromer as the
original reporters.

All gnupg users are advised to upgrade to this updated package, which
contains a backported patch to correct this issue.

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/site/articles/11258

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

1043327 - CVE-2013-4576 gnupg: RSA secret key recovery via acoustic cryptanalysis

6. Package List:

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

Source:

i386:
gnupg-1.4.5-18.el5_10.1.i386.rpm
gnupg-debuginfo-1.4.5-18.el5_10.1.i386.rpm

x86_64:
gnupg-1.4.5-18.el5_10.1.x86_64.rpm
gnupg-debuginfo-1.4.5-18.el5_10.1.x86_64.rpm

Red Hat Enterprise Linux (v. 5 server):

Source:

i386:
gnupg-1.4.5-18.el5_10.1.i386.rpm
gnupg-debuginfo-1.4.5-18.el5_10.1.i386.rpm

ia64:
gnupg-1.4.5-18.el5_10.1.ia64.rpm
gnupg-debuginfo-1.4.5-18.el5_10.1.ia64.rpm

ppc:
gnupg-1.4.5-18.el5_10.1.ppc.rpm
gnupg-debuginfo-1.4.5-18.el5_10.1.ppc.rpm

s390x:
gnupg-1.4.5-18.el5_10.1.s390x.rpm
gnupg-debuginfo-1.4.5-18.el5_10.1.s390x.rpm

x86_64:
gnupg-1.4.5-18.el5_10.1.x86_64.rpm
gnupg-debuginfo-1.4.5-18.el5_10.1.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/#package

7. References:

https://access.redhat.com/security/cve/CVE-2013-4576
https://access.redhat.com/security/updates/classification/#moderate

8. Contact:

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

Copyright 2014 Red Hat, Inc.
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