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

RHSA-2012:0060 - 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 5.

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)

A double free flaw was discovered in the policy checking code in OpenSSL. A remote attacker could use this flaw to crash an application that uses OpenSSL by providing an X.509 certificate that has specially-crafted policy extension data. (CVE-2011-4109)

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)

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 Enterprise Linux for Power, big endian5ppc
Red Hat Enterprise Linux for IBM z Systems5s390x
Red Hat Enterprise Linux Workstation5x86_64
Red Hat Enterprise Linux Workstation5i386
Red Hat Enterprise Linux Server5x86_64
Red Hat Enterprise Linux Server5ia64
Red Hat Enterprise Linux Server5i386
Red Hat Enterprise Linux Server from RHUI5x86_64
Red Hat Enterprise Linux Server from RHUI5i386
Red Hat Enterprise Linux Desktop5x86_64
Red Hat Enterprise Linux Desktop5i386

Updated Packages

  • openssl-devel-0.9.8e-20.el5_7.1.ppc64.rpm
  • openssl-0.9.8e-20.el5_7.1.src.rpm
  • openssl-perl-0.9.8e-20.el5_7.1.ia64.rpm
  • openssl-0.9.8e-20.el5_7.1.i386.rpm
  • openssl-0.9.8e-20.el5_7.1.i686.rpm
  • openssl-perl-0.9.8e-20.el5_7.1.ppc.rpm
  • openssl-perl-0.9.8e-20.el5_7.1.s390x.rpm
  • openssl-0.9.8e-20.el5_7.1.s390.rpm
  • openssl-perl-0.9.8e-20.el5_7.1.x86_64.rpm
  • openssl-devel-0.9.8e-20.el5_7.1.s390x.rpm
  • openssl-devel-0.9.8e-20.el5_7.1.ia64.rpm
  • openssl-devel-0.9.8e-20.el5_7.1.ppc.rpm
  • openssl-0.9.8e-20.el5_7.1.x86_64.rpm
  • openssl-0.9.8e-20.el5_7.1.s390x.rpm
  • openssl-0.9.8e-20.el5_7.1.ppc.rpm
  • openssl-0.9.8e-20.el5_7.1.ia64.rpm
  • openssl-perl-0.9.8e-20.el5_7.1.i386.rpm
  • openssl-0.9.8e-20.el5_7.1.ppc64.rpm
  • openssl-devel-0.9.8e-20.el5_7.1.i386.rpm
  • openssl-devel-0.9.8e-20.el5_7.1.x86_64.rpm
  • openssl-devel-0.9.8e-20.el5_7.1.s390.rpm

Fixes

CVEs

References

Additional information