Issued:
2010-12-13
Updated:
2010-12-13

RHSA-2010:0978 - Security Advisory

Synopsis

Moderate: openssl security update

Type/Severity

Security Advisory: Moderate

Topic

Updated openssl packages that fix two 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.

A ciphersuite downgrade flaw was found in the OpenSSL SSL/TLS server code.
A remote attacker could possibly use this flaw to change the ciphersuite
associated with a cached session stored on the server, if the server
enabled the SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG option, possibly
forcing the client to use a weaker ciphersuite after resuming the session.
(CVE-2010-4180, CVE-2008-7270)

Note: With this update, setting the SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG
option has no effect and this bug workaround can no longer be enabled.

All OpenSSL users should upgrade to these updated packages, which contain a
backported patch 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
http://kbase.redhat.com/faq/docs/DOC-11259

Affected Products

  • Red Hat Enterprise Linux Server 5 x86_64
  • Red Hat Enterprise Linux Server 5 ia64
  • Red Hat Enterprise Linux Server 5 i386
  • Red Hat Enterprise Linux Workstation 5 x86_64
  • Red Hat Enterprise Linux Workstation 5 i386
  • Red Hat Enterprise Linux Desktop 5 x86_64
  • Red Hat Enterprise Linux Desktop 5 i386
  • Red Hat Enterprise Linux for IBM z Systems 5 s390x
  • Red Hat Enterprise Linux for Power, big endian 5 ppc
  • Red Hat Enterprise Linux Server from RHUI 5 x86_64
  • Red Hat Enterprise Linux Server from RHUI 5 i386

Fixes

  • BZ - 659462 - CVE-2010-4180 openssl: NETSCAPE_REUSE_CIPHER_CHANGE_BUG ciphersuite downgrade attack
  • BZ - 660650 - CVE-2008-7270 openssl: NETSCAPE_REUSE_CIPHER_CHANGE_BUG downgrade-to-disabled ciphersuite attack

CVEs

References

Red Hat Enterprise Linux Server 5

SRPM
x86_64
openssl-0.9.8e-12.el5_5.7.i686.rpm SHA-256: def1ea8f1f2300d658d960d682c0ec7b790ecf5353058e8b6045bfe72e2a8ce9
openssl-0.9.8e-12.el5_5.7.x86_64.rpm SHA-256: 268c3eeb27cc61cc61a30c8533006b9db07bc776d7809998ae649433a3c7b468
openssl-devel-0.9.8e-12.el5_5.7.i386.rpm SHA-256: 63161798986f72966287a945caec2424f2559bf187dd6287a2ee43457d5679d5
openssl-devel-0.9.8e-12.el5_5.7.x86_64.rpm SHA-256: 5479e9fafa8fc17f1dd62a942977eb547f757b01d0cbb116a2e2b82368081551
openssl-perl-0.9.8e-12.el5_5.7.x86_64.rpm SHA-256: aa758e46b31c4545a8084f2d101c5d86b3cf10eba78d5ccaa868e1ebaa0d96d5
ia64
openssl-0.9.8e-12.el5_5.7.i686.rpm SHA-256: def1ea8f1f2300d658d960d682c0ec7b790ecf5353058e8b6045bfe72e2a8ce9
i386
openssl-0.9.8e-12.el5_5.7.i686.rpm SHA-256: def1ea8f1f2300d658d960d682c0ec7b790ecf5353058e8b6045bfe72e2a8ce9
openssl-devel-0.9.8e-12.el5_5.7.i386.rpm SHA-256: 63161798986f72966287a945caec2424f2559bf187dd6287a2ee43457d5679d5

Red Hat Enterprise Linux Workstation 5

SRPM
x86_64
openssl-0.9.8e-12.el5_5.7.i686.rpm SHA-256: def1ea8f1f2300d658d960d682c0ec7b790ecf5353058e8b6045bfe72e2a8ce9
openssl-0.9.8e-12.el5_5.7.x86_64.rpm SHA-256: 268c3eeb27cc61cc61a30c8533006b9db07bc776d7809998ae649433a3c7b468
openssl-devel-0.9.8e-12.el5_5.7.i386.rpm SHA-256: 63161798986f72966287a945caec2424f2559bf187dd6287a2ee43457d5679d5
openssl-devel-0.9.8e-12.el5_5.7.x86_64.rpm SHA-256: 5479e9fafa8fc17f1dd62a942977eb547f757b01d0cbb116a2e2b82368081551
openssl-perl-0.9.8e-12.el5_5.7.x86_64.rpm SHA-256: aa758e46b31c4545a8084f2d101c5d86b3cf10eba78d5ccaa868e1ebaa0d96d5
i386
openssl-0.9.8e-12.el5_5.7.i686.rpm SHA-256: def1ea8f1f2300d658d960d682c0ec7b790ecf5353058e8b6045bfe72e2a8ce9
openssl-devel-0.9.8e-12.el5_5.7.i386.rpm SHA-256: 63161798986f72966287a945caec2424f2559bf187dd6287a2ee43457d5679d5

Red Hat Enterprise Linux Desktop 5

SRPM
x86_64
openssl-0.9.8e-12.el5_5.7.i686.rpm SHA-256: def1ea8f1f2300d658d960d682c0ec7b790ecf5353058e8b6045bfe72e2a8ce9
openssl-0.9.8e-12.el5_5.7.x86_64.rpm SHA-256: 268c3eeb27cc61cc61a30c8533006b9db07bc776d7809998ae649433a3c7b468
openssl-perl-0.9.8e-12.el5_5.7.x86_64.rpm SHA-256: aa758e46b31c4545a8084f2d101c5d86b3cf10eba78d5ccaa868e1ebaa0d96d5
i386
openssl-0.9.8e-12.el5_5.7.i686.rpm SHA-256: def1ea8f1f2300d658d960d682c0ec7b790ecf5353058e8b6045bfe72e2a8ce9

Red Hat Enterprise Linux Server from RHUI 5

SRPM
x86_64
openssl-0.9.8e-12.el5_5.7.i686.rpm SHA-256: def1ea8f1f2300d658d960d682c0ec7b790ecf5353058e8b6045bfe72e2a8ce9
openssl-0.9.8e-12.el5_5.7.x86_64.rpm SHA-256: 268c3eeb27cc61cc61a30c8533006b9db07bc776d7809998ae649433a3c7b468
openssl-devel-0.9.8e-12.el5_5.7.i386.rpm SHA-256: 63161798986f72966287a945caec2424f2559bf187dd6287a2ee43457d5679d5
openssl-devel-0.9.8e-12.el5_5.7.x86_64.rpm SHA-256: 5479e9fafa8fc17f1dd62a942977eb547f757b01d0cbb116a2e2b82368081551
openssl-perl-0.9.8e-12.el5_5.7.x86_64.rpm SHA-256: aa758e46b31c4545a8084f2d101c5d86b3cf10eba78d5ccaa868e1ebaa0d96d5
i386
openssl-0.9.8e-12.el5_5.7.i686.rpm SHA-256: def1ea8f1f2300d658d960d682c0ec7b790ecf5353058e8b6045bfe72e2a8ce9
openssl-devel-0.9.8e-12.el5_5.7.i386.rpm SHA-256: 63161798986f72966287a945caec2424f2559bf187dd6287a2ee43457d5679d5

The Red Hat security contact is secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.