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Red Hat Enterprise Linux 5 & 6 RHSA-2013:1459-01 Moderate GnuPG2 Update

red hat
Calendar Grey October 24, 2013
Dist Redhat Esm H88
This notification outlines a significant security enhancement for gnupg2 aimed at resolving keyring integrity and denial of service vulnerabilities.
An updated gnupg2 package that fixes three security issues 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 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.
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 gnupg2 users are advised to upgrade to this updated package, which contains backported patches to correct these issues.

Topics%20covered

Topics Covered

security advisory moderate Red Hat DoS issue software update gnupg2 keyring corruption

References

https://access.redhat.com/security/cve/CVE-2012-6085 https://access.redhat.com/security/cve/CVE-2013-4351 https://access.redhat.com/security/cve/CVE-2013-4402 https://access.redhat.com/security/updates/classification#moderate

Package List

Red Hat Enterprise Linux Desktop (v. 5 client):
Source:
i386: gnupg2-2.0.10-6.el5_10.i386.rpm gnupg2-debuginfo-2.0.10-6.el5_10.i386.rpm
x86_64: gnupg2-2.0.10-6.el5_10.x86_64.rpm gnupg2-debuginfo-2.0.10-6.el5_10.x86_64.rpm
Red Hat Enterprise Linux (v. 5 server):
Source:
i386: gnupg2-2.0.10-6.el5_10.i386.rpm gnupg2-debuginfo-2.0.10-6.el5_10.i386.rpm
ia64: gnupg2-2.0.10-6.el5_10.ia64.rpm gnupg2-debuginfo-2.0.10-6.el5_10.ia64.rpm
ppc: gnupg2-2.0.10-6.el5_10.ppc.rpm gnupg2-debuginfo-2.0.10-6.el5_10.ppc.rpm
s390x: gnupg2-2.0.10-6.el5_10.s390x.rpm gnupg2-debuginfo-2.0.10-6.el5_10.s390x.rpm
x86_64: gnupg2-2.0.10-6.el5_10.x86_64.rpm gnupg2-debuginfo-2.0.10-6.el5_10.x86_64.rpm
Red Hat Enterprise Linux Desktop (v. 6):
Source:
i386: gnupg2-2.0.14-6.el6_4.i686.rpm gnupg2-debuginfo-2.0.14-6.el6_4.i686.rpm
x86_64: gnupg2-2.0.14-6.el6_4.x86_64.rpm gnupg2-debuginfo-2.0.14-6.el6_4.x86_64.rpm
Red Hat Enterprise Linux Desktop Optional (v. 6):
Source:
i386: gnupg2-debuginfo-2.0.14-6.el6_4.i686.rpm gnupg2-smime-2.0.14-6.el6_4.i686.rpm
x86_64: gnupg2-debuginfo-2.0.14-6.el6_4.x86_64.rpm gnupg2-smime-2.0.14-6.el6_4.x86_64.rpm
Red Hat Enterprise Linux HPC Node (v. 6):
Source:
x86_64: gnupg2-2.0.14-6.el6_4.x86_64.rpm gnupg2-debuginfo-2.0.14-6.el6_4.x86_64.rpm


Read the Full Advisory


Advisory ID: RHSA-2013:1459-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2013:1459.html
Issue date: 2013-10-24

Topic

An updated gnupg2 package that fixes three security issues is now availablefor Red Hat Enterprise Linux 5 and 6.The Red Hat Security Response Team has rated this update as having moderatesecurity impact. Common Vulnerability Scoring System (CVSS) base scores,which give detailed severity ratings, are available for each vulnerabilityfrom the CVE links in the References section.

Topics%20covered

Topics Covered

security advisory moderate Red Hat DoS issue software update gnupg2 keyring corruption

Relevant Releases Architectures

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 Server Optional (v. 6) - i386, ppc64, s390x, x86_64

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

Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64

Bugs Fixed

891142 - CVE-2012-6085 GnuPG: read_block() corrupt key input validation

1010137 - CVE-2013-4351 gnupg: treats no-usage-permitted keys as all-usages-permitted

1015685 - CVE-2013-4402 GnuPG: infinite recursion in the compressed packet parser DoS

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