Explore top 10 tips to secure your open-source projects now. Read More

×
Alerts This Week
Warning Icon 1 443
Alerts This Week
Warning Icon 1 443

Red Hat: 2013:1457-01 Moderate: libgcrypt Vulnerability to Cache Attacks

red hat
Calendar Grey October 24, 2013
Dist Redhat Esm H88
Significant enhancement to the libgcrypt package bolsters defense against cache vulnerabilities in Red Hat Enterprise Linux editions. Take action now!
An updated libgcrypt package that fixes one security issue is now available for Red Hat Enterprise Linux 5 and 6

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

Summary

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.

Topics%20covered

Topics Covered

security advisory moderate Red Hat patch cryptography cache attack libgcrypt

References

https://access.redhat.com/security/cve/CVE-2013-4242 https://access.redhat.com/security/updates/classification#moderate

Package List

Red Hat Enterprise Linux Desktop (v. 5 client):
Source:
i386: libgcrypt-1.4.4-7.el5_10.i386.rpm libgcrypt-debuginfo-1.4.4-7.el5_10.i386.rpm
x86_64: libgcrypt-1.4.4-7.el5_10.i386.rpm libgcrypt-1.4.4-7.el5_10.x86_64.rpm libgcrypt-debuginfo-1.4.4-7.el5_10.i386.rpm libgcrypt-debuginfo-1.4.4-7.el5_10.x86_64.rpm
RHEL Desktop Workstation (v. 5 client):
Source:
i386: libgcrypt-debuginfo-1.4.4-7.el5_10.i386.rpm libgcrypt-devel-1.4.4-7.el5_10.i386.rpm
x86_64: libgcrypt-debuginfo-1.4.4-7.el5_10.i386.rpm libgcrypt-debuginfo-1.4.4-7.el5_10.x86_64.rpm libgcrypt-devel-1.4.4-7.el5_10.i386.rpm libgcrypt-devel-1.4.4-7.el5_10.x86_64.rpm
Red Hat Enterprise Linux (v. 5 server):
Source:
i386: libgcrypt-1.4.4-7.el5_10.i386.rpm libgcrypt-debuginfo-1.4.4-7.el5_10.i386.rpm libgcrypt-devel-1.4.4-7.el5_10.i386.rpm
ia64: libgcrypt-1.4.4-7.el5_10.i386.rpm libgcrypt-1.4.4-7.el5_10.ia64.rpm libgcrypt-debuginfo-1.4.4-7.el5_10.i386.rpm libgcrypt-debuginfo-1.4.4-7.el5_10.ia64.rpm libgcrypt-devel-1.4.4-7.el5_10.ia64.rpm
ppc: libgcrypt-1.4.4-7.el5_10.ppc.rpm libgcrypt-1.4.4-7.el5_10.ppc64.rpm libgcrypt-debuginfo-1.4.4-7.el5_10.ppc.rpm libgcrypt-debuginfo-1.4.4-7.el5_10.ppc64.rpm libgcrypt-devel-1.4.4-7.el5_10.ppc.rpm libgcrypt-devel-1.4.4-7.el5_10.ppc64.rpm
s390x: libgcrypt-1.4.4-7.el5_10.s390.rpm

Read the Full Advisory


Advisory ID: RHSA-2013:1457-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2013:1457.html
Issue date: 2013-10-24

Topic

An updated libgcrypt package that fixes one security issue is now availablefor Red Hat Enterprise Linux 5 and 6.The Red Hat Security Response Team has rated this update as having moderatesecurity impact. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available from the CVE link inthe References section.

Topics%20covered

Topics Covered

security advisory moderate Red Hat patch cryptography cache attack libgcrypt

Relevant Releases Architectures

RHEL Desktop Workstation (v. 5 client) - i386, x86_64

Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64

Red Hat Enterprise Linux Desktop (v. 5 client) - i386, 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 Workstation (v. 6) - i386, x86_64

Bugs Fixed

988589 - CVE-2013-4242 GnuPG susceptible to Yarom/Falkner flush+reload cache side-channel attack

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.