Moderate CentOS libgcrypt Update


libgcrypt-1.4.4-7.el5_10.i386.rpm, libgcrypt-1.4.4-7.el5_10.src.rpm, libgcrypt-1.4.4-7.el5_10.x86_64.rpm, libgcrypt-1.4.5-11.el6_4.i686.rpm, libgcrypt-1.4.5-11.el6_4.src.rpm, libgcrypt-1.4.5-11.el6_4.x86_64.rpm, libgcrypt-devel-1.4.4-7.el5_10.i386.rpm, libgcrypt-devel-1.4.4-7.el5_10.x86_64.rpm, libgcrypt-devel-1.4.5-11.el6_4.i686.rpm, libgcrypt-devel-1.4.5-11.el6_4.x86_64.rpm,,
2018-01-18 11:06
2017-07-27 19:06
2017-04-01 19:07
2017-01-05 20:11


An updated libgcrypt package that fixes one security issue is now available
for Red Hat Enterprise Linux 5 and 6.

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.

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.
Please see

Am I vulnerable?

The constraints below list the versions that this vulnerability is patched in, and versions that are unaffected. If a patch is ready but unrealeased, then it is pending.

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Affected package information

Release Package Patched in
5 libgcrypt libgcrypt-1.4.4-7.el5_10.i386.rpm
libgcrypt libgcrypt-1.4.4-7.el5_10.src.rpm
libgcrypt libgcrypt-1.4.4-7.el5_10.x86_64.rpm
libgcrypt-devel libgcrypt-devel-1.4.4-7.el5_10.i386.rpm
libgcrypt-devel libgcrypt-devel-1.4.4-7.el5_10.x86_64.rpm
6 libgcrypt libgcrypt-1.4.5-11.el6_4.i686.rpm
libgcrypt libgcrypt-1.4.5-11.el6_4.src.rpm
libgcrypt libgcrypt-1.4.5-11.el6_4.x86_64.rpm
libgcrypt-devel libgcrypt-devel-1.4.5-11.el6_4.i686.rpm
libgcrypt-devel libgcrypt-devel-1.4.5-11.el6_4.x86_64.rpm