Issued:
2012-01-24
Updated:
2012-01-24

RHSA-2012:0059 - Moderate: openssl security update

Synopsis

Moderate: openssl security update

Type/Severity

Security Advisory Moderate

Topic

Updated openssl packages that fix multiple security issues are now available for Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

Description

OpenSSL is a toolkit that implements the Secure Sockets Layer (SSL v2/v3) and Transport Layer Security (TLS v1) protocols, as well as a full-strength, general purpose cryptography library.

It was discovered that the Datagram Transport Layer Security (DTLS) protocol implementation in OpenSSL leaked timing information when performing certain operations. A remote attacker could possibly use this flaw to retrieve plain text from the encrypted packets by using a DTLS server as a padding oracle. (CVE-2011-4108)

An information leak flaw was found in the SSL 3.0 protocol implementation in OpenSSL. Incorrect initialization of SSL record padding bytes could cause an SSL client or server to send a limited amount of possibly sensitive data to its SSL peer via the encrypted connection. (CVE-2011-4576)

A denial of service flaw was found in the RFC 3779 implementation in OpenSSL. A remote attacker could use this flaw to make an application using OpenSSL exit unexpectedly by providing a specially-crafted X.509 certificate that has malformed RFC 3779 extension data. (CVE-2011-4577)

It was discovered that OpenSSL did not limit the number of TLS/SSL handshake restarts required to support Server Gated Cryptography. A remote attacker could use this flaw to make a TLS/SSL server using OpenSSL consume an excessive amount of CPU by continuously restarting the handshake. (CVE-2011-4619)

All OpenSSL users should upgrade to these updated packages, which contain backported patches to resolve these issues. For the update to take effect, all services linked to the OpenSSL library must be restarted, or the system rebooted.

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 This content is not included.https://access.redhat.com/kb/docs/DOC-11259

Affected Products

ProductVersionArch
Red Hat Storage2.0x86_64
Red Hat Storage for Public Cloud (via RHUI)2.0x86_64
Red Hat Gluster Storage Server for On-premise2.0x86_64
Red Hat Enterprise Linux for x86_64 - Extended Update Support6.2x86_64
Red Hat Enterprise Linux for x86_64 - Extended Update Support6.2i386
Red Hat Enterprise Linux for Scientific Computing6x86_64
Red Hat Enterprise Linux for Power, big endian6ppc64
Red Hat Enterprise Linux for Power, big endian - Extended Update Support6.2ppc64
Red Hat Enterprise Linux for IBM z Systems6s390x
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support6.2s390x
Red Hat Enterprise Linux Workstation6x86_64
Red Hat Enterprise Linux Workstation6i386
Red Hat Enterprise Linux Server6x86_64
Red Hat Enterprise Linux Server6i386
Red Hat Enterprise Linux Server from RHUI6x86_64
Red Hat Enterprise Linux Server from RHUI6i386
Red Hat Enterprise Linux Server - Retired Extended Life Cycle Support6x86_64
Red Hat Enterprise Linux Server - Extended Update Support from RHUI6.2x86_64
Red Hat Enterprise Linux Server - Extended Update Support from RHUI6.2i386
Red Hat Enterprise Linux Server - Extended Life Cycle Support6x86_64
Red Hat Enterprise Linux Server - Extended Life Cycle Support6i386
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension6x86_64
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension6i386
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension (for IBM z Systems)6s390x
Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems)6s390x
Red Hat Enterprise Linux Server - AUS6.2x86_64
Red Hat Enterprise Linux Desktop6x86_64
Red Hat Enterprise Linux Desktop6i386

Updated Packages

  • openssl-perl-1.0.0-20.el6_2.1.ppc64.rpm
  • openssl-devel-1.0.0-20.el6_2.1.i686.rpm
  • openssl-devel-1.0.0-20.el6_2.1.ppc64.rpm
  • openssl-debuginfo-1.0.0-20.el6_2.1.s390x.rpm
  • openssl-1.0.0-20.el6_2.1.i686.rpm
  • openssl-1.0.0-20.el6_2.1.s390.rpm
  • openssl-debuginfo-1.0.0-20.el6_2.1.ppc64.rpm
  • openssl-static-1.0.0-20.el6_2.1.x86_64.rpm
  • openssl-debuginfo-1.0.0-20.el6_2.1.i686.rpm
  • openssl-perl-1.0.0-20.el6_2.1.s390x.rpm
  • openssl-1.0.0-20.el6_2.1.s390x.rpm
  • openssl-devel-1.0.0-20.el6_2.1.s390.rpm
  • openssl-1.0.0-20.el6_2.1.ppc.rpm
  • openssl-static-1.0.0-20.el6_2.1.ppc64.rpm
  • openssl-perl-1.0.0-20.el6_2.1.i686.rpm
  • openssl-1.0.0-20.el6_2.1.src.rpm
  • openssl-1.0.0-20.el6_2.1.ppc64.rpm
  • openssl-debuginfo-1.0.0-20.el6_2.1.s390.rpm
  • openssl-debuginfo-1.0.0-20.el6_2.1.x86_64.rpm
  • openssl-devel-1.0.0-20.el6_2.1.ppc.rpm
  • openssl-static-1.0.0-20.el6_2.1.s390x.rpm
  • openssl-devel-1.0.0-20.el6_2.1.s390x.rpm
  • openssl-devel-1.0.0-20.el6_2.1.x86_64.rpm
  • openssl-static-1.0.0-20.el6_2.1.i686.rpm
  • openssl-1.0.0-20.el6_2.1.x86_64.rpm
  • openssl-perl-1.0.0-20.el6_2.1.x86_64.rpm
  • openssl-debuginfo-1.0.0-20.el6_2.1.ppc.rpm

Fixes

CVEs

References

Additional information