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Test ID:
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.
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)

Please Install the Updated Packages.

CVSS Score:

CVSS Vector:

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2013-4242
BugTraq ID: 61464
CERT/CC vulnerability note: VU#976534
Debian Security Information: DSA-2730 (Google Search)
Debian Security Information: DSA-2731 (Google Search)
RedHat Security Advisories: RHSA-2013:1457
SuSE Security Announcement: openSUSE-SU-2013:1294 (Google Search)
CopyrightCopyright (c) 2013 Greenbone Networks GmbH

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