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Test ID:1.3.6.1.4.1.25623.1.0.871056
Category:Red Hat Local Security Checks
Title:RedHat Update for libgcrypt RHSA-2013:1457-01
Summary:The remote host is missing an update for the 'libgcrypt'; package(s) announced via the referenced advisory.
Description:Summary:
The remote host is missing an update for the 'libgcrypt'
package(s) announced via the referenced advisory.

Vulnerability Insight:
The libgcrypt library provides general-purpose implementations of various
cryptographic algorithms.

It was found that GnuPG was vulnerable to the Yarom/Falkner flush+reload
cache side-channel attack on the RSA secret exponent. An attacker able to
execute a process on the logical CPU that shared the L3 cache with the
GnuPG process (such as a different local user or a user of a KVM guest
running on the same host with the kernel same-page merging functionality
enabled) could possibly use this flaw to obtain portions of the RSA secret
key. (CVE-2013-4242)

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

Affected Software/OS:
libgcrypt on Red Hat Enterprise Linux (v. 5 server),
Red Hat Enterprise Linux Desktop (v. 6),
Red Hat Enterprise Linux Server (v. 6),
Red Hat Enterprise Linux Workstation (v. 6)

Solution:
Please Install the Updated Packages.

CVSS Score:
1.9

CVSS Vector:
AV:L/AC:M/Au:N/C:P/I:N/A:N

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2013-4242
BugTraq ID: 61464
http://www.securityfocus.com/bid/61464
CERT/CC vulnerability note: VU#976534
http://www.kb.cert.org/vuls/id/976534
Debian Security Information: DSA-2730 (Google Search)
http://www.debian.org/security/2013/dsa-2730
Debian Security Information: DSA-2731 (Google Search)
http://www.debian.org/security/2013/dsa-2731
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=717880
http://eprint.iacr.org/2013/448
http://lists.gnupg.org/pipermail/gnupg-announce/2013q3/000330.html
RedHat Security Advisories: RHSA-2013:1457
http://rhn.redhat.com/errata/RHSA-2013-1457.html
http://secunia.com/advisories/54318
http://secunia.com/advisories/54321
http://secunia.com/advisories/54332
http://secunia.com/advisories/54375
SuSE Security Announcement: openSUSE-SU-2013:1294 (Google Search)
http://lists.opensuse.org/opensuse-updates/2013-08/msg00003.html
http://www.ubuntu.com/usn/USN-1923-1
CopyrightCopyright (c) 2013 Greenbone Networks GmbH

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