Issued:

2005-10-11

Updated:

2005-10-11

RHSA-2005:800 - openssl security update

Synopsis

openssl security update

Type/Severity

Security Advisory Moderate

Topic

Updated OpenSSL packages that fix various security issues are now available.

This update has been rated as having moderate security impact by the Red Hat Security Response Team.

Description

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

OpenSSL contained a software work-around for a bug in SSL handling in Microsoft Internet Explorer version 3.0.2. This work-around is enabled in most servers that use OpenSSL to provide support for SSL and TLS. Yutaka Oiwa discovered that this work-around could allow an attacker, acting as a "man in the middle" to force an SSL connection to use SSL 2.0 rather than a stronger protocol such as SSL 3.0 or TLS 1.0. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2005-2969 to this issue.

A bug was also fixed in the way OpenSSL creates DSA signatures. A cache timing attack was fixed in RHSA-2005-476 which caused OpenSSL to do private key calculations with a fixed time window. The DSA fix for this was not complete and the calculations are not always performed within a fixed-window. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2005-0109 to this issue.

Users are advised to upgrade to these updated packages, which remove the MISE 3.0.2 work-around and contain patches to correct these issues.

Note: After installing this update, users are advised to either restart all services that use OpenSSL or restart their system.

Solution

Before applying this update, make sure all previously released errata relevant to your system have been applied.

This update is available via Red Hat Network. To use Red Hat Network, launch the Red Hat Update Agent with the following command:

up2date

This will start an interactive process that will result in the appropriate RPMs being upgraded on your system.

Affected Products

Updated Packages

• openssl-devel-0.9.7a-33.17.s390x.rpm
• openssl-devel-0.9.7a-43.4.s390.rpm
• openssl-0.9.7a-43.4.x86_64.rpm
• openssl-0.9.7a-33.17.ppc.rpm
• openssl-0.9.7a-43.4.ppc.rpm
• openssl-0.9.7a-33.17.i686.rpm
• openssl-0.9.7a-33.17.ia64.rpm
• openssl-0.9.7a-43.4.ia64.rpm
• openssl-0.9.6b-40.ia64.rpm
• openssl-devel-0.9.7a-43.4.i386.rpm
• openssl-devel-0.9.7a-33.17.s390.rpm
• openssl096b-0.9.6b-16.22.4.i386.rpm
• openssl-0.9.7a-33.17.x86_64.rpm
• openssl-0.9.7a-43.4.i686.rpm
• openssl096b-0.9.6b-22.4.i386.rpm
• openssl-0.9.7a-43.4.i386.rpm
• openssl096b-0.9.6b-22.4.ia64.rpm
• openssl096-0.9.6-27.i386.rpm
• openssl-devel-0.9.7a-33.17.ppc.rpm
• openssl095a-0.9.5a-26.ia64.rpm
• openssl096b-0.9.6b-16.22.4.s390.rpm
• openssl-devel-0.9.7a-33.17.i386.rpm
• openssl096b-0.9.6b-22.4.x86_64.rpm
• openssl-0.9.7a-33.17.ppc64.rpm
• openssl-devel-0.9.7a-33.17.x86_64.rpm
• openssl095a-0.9.5a-26.i386.rpm
• openssl-0.9.6b-40.i386.rpm
• openssl-devel-0.9.6b-40.i386.rpm
• openssl-devel-0.9.7a-43.4.ia64.rpm
• openssl-0.9.7a-43.4.ppc64.rpm
• openssl-perl-0.9.7a-43.4.ppc.rpm
• openssl-perl-0.9.7a-33.17.x86_64.rpm
• openssl-perl-0.9.7a-33.17.i386.rpm
• openssl-perl-0.9.7a-33.17.ppc.rpm
• openssl-devel-0.9.7a-43.4.ppc.rpm
• openssl-perl-0.9.7a-43.4.ia64.rpm
• openssl-0.9.7a-43.4.s390.rpm
• openssl-perl-0.9.7a-43.4.x86_64.rpm
• openssl-devel-0.9.7a-43.4.x86_64.rpm
• openssl096b-0.9.6b-16.22.4.ia64.rpm
• openssl-devel-0.9.7a-43.4.s390x.rpm
• openssl096b-0.9.6b-22.4.s390.rpm
• openssl-0.9.7a-33.17.s390.rpm
• openssl-perl-0.9.7a-43.4.i386.rpm
• openssl-devel-0.9.6b-40.ia64.rpm
• openssl-0.9.6b-40.i686.rpm
• openssl-perl-0.9.7a-33.17.s390x.rpm
• openssl-perl-0.9.7a-43.4.s390x.rpm
• openssl096b-0.9.6b-22.4.ppc.rpm
• openssl-0.9.7a-43.4.s390x.rpm
• openssl-perl-0.9.6b-40.i386.rpm
• openssl-0.9.7a-33.17.s390x.rpm
• openssl096b-0.9.6b-16.22.4.x86_64.rpm
• openssl096b-0.9.6b-16.22.4.ppc.rpm
• openssl-perl-0.9.7a-33.17.s390.rpm
• openssl-perl-0.9.6b-40.ia64.rpm
• openssl-perl-0.9.7a-33.17.ia64.rpm
• openssl096-0.9.6-27.ia64.rpm
• openssl-0.9.7a-33.17.i386.rpm
• openssl-devel-0.9.7a-33.17.ia64.rpm
• openssl-perl-0.9.7a-43.4.s390.rpm

Fixes

• This content is not included.BZ - 169863
• This content is not included.BZ - 170036

CVEs

• CVE-2005-0109
• CVE-2005-2969

References

(none)

Additional information

• The Red Hat security contact is This content is not included.secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.
• Offline Security Data data is available for integration with other systems. See Offline Security Data API to get started.