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Test ID:1.3.6.1.4.1.25623.1.0.871059
Category:Red Hat Local Security Checks
Title:RedHat Update for gnupg RHSA-2013:1458-01
Summary:The remote host is missing an update for the 'gnupg'; package(s) announced via the referenced advisory.
Description:Summary:
The remote host is missing an update for the 'gnupg'
package(s) announced via the referenced advisory.

Vulnerability Insight:
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 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)

A denial of service flaw was found in the way GnuPG parsed certain
compressed OpenPGP packets. An attacker could use this flaw to send
specially crafted input data to GnuPG, making GnuPG enter an infinite loop
when parsing data. (CVE-2013-4402)

It was found that importing a corrupted public key into a GnuPG keyring
database corrupted that keyring. An attacker could use this flaw to trick a
local user into importing a specially crafted public key into their keyring
database, causing the keyring to be corrupted and preventing its further
use. (CVE-2012-6085)

It was found that GnuPG did not properly interpret the key flags in a PGP
key packet. GPG could accept a key for uses not indicated by its holder.
(CVE-2013-4351)

Red Hat would like to thank Werner Koch for reporting the CVE-2013-4402
issue. Upstream acknowledges Taylor R Campbell as the original reporter.

All gnupg users are advised to upgrade to this updated package, which
contains backported patches to correct these issues.

Affected Software/OS:
gnupg on Red Hat Enterprise Linux (v. 5 server)

Solution:
Please Install the Updated Packages.

CVSS Score:
5.8

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

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2012-6085
BugTraq ID: 57102
http://www.securityfocus.com/bid/57102
http://lists.fedoraproject.org/pipermail/package-announce/2013-January/095513.html
http://lists.fedoraproject.org/pipermail/package-announce/2013-January/095516.html
http://www.mandriva.com/security/advisories?name=MDVSA-2013:001
https://bugzilla.redhat.com/show_bug.cgi?id=891142
http://www.openwall.com/lists/oss-security/2013/01/01/6
RedHat Security Advisories: RHSA-2013:1459
http://rhn.redhat.com/errata/RHSA-2013-1459.html
http://www.ubuntu.com/usn/USN-1682-1
XForce ISS Database: gnupg-public-keys-code-exec(80990)
https://exchange.xforce.ibmcloud.com/vulnerabilities/80990
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
Common Vulnerability Exposure (CVE) ID: CVE-2013-4351
Debian Security Information: DSA-2773 (Google Search)
http://www.debian.org/security/2013/dsa-2773
Debian Security Information: DSA-2774 (Google Search)
http://www.debian.org/security/2013/dsa-2774
http://www.openwall.com/lists/oss-security/2013/09/13/4
SuSE Security Announcement: openSUSE-SU-2013:1526 (Google Search)
http://lists.opensuse.org/opensuse-updates/2013-10/msg00003.html
SuSE Security Announcement: openSUSE-SU-2013:1532 (Google Search)
http://lists.opensuse.org/opensuse-updates/2013-10/msg00006.html
http://ubuntu.com/usn/usn-1987-1
Common Vulnerability Exposure (CVE) ID: CVE-2013-4402
http://lists.gnupg.org/pipermail/gnupg-announce/2013q4/000334.html
http://lists.gnupg.org/pipermail/gnupg-announce/2013q4/000333.html
SuSE Security Announcement: openSUSE-SU-2013:1546 (Google Search)
http://lists.opensuse.org/opensuse-updates/2013-10/msg00020.html
SuSE Security Announcement: openSUSE-SU-2013:1552 (Google Search)
http://lists.opensuse.org/opensuse-updates/2013-10/msg00025.html
http://www.ubuntu.com/usn/USN-1987-1
CopyrightCopyright (c) 2013 Greenbone Networks GmbH

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