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Red Hat Enterprise Linux: RHSA-2009:0004-01 Critical OpenSSL Cert Bypass

red hat
Calendar Grey January 7, 2009
Dist Redhat Esm H88
Recent enhancements to the OpenSSL software in Red Hat have resolved critical vulnerabilities and bolstered the robustness of SSL/TLS protocols.
Updated OpenSSL packages that correct a security issue are now available for Red Hat Enterprise Linux 2.1, 3, 4, and 5

Solution

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

This update is available via Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at

Summary

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.
The Google security team discovered a flaw in the way OpenSSL checked the verification of certificates. An attacker in control of a malicious server, or able to effect a "man in the middle" attack, could present a malformed SSL/TLS signature from a certificate chain to a vulnerable client and bypass validation. (CVE-2008-5077)
All OpenSSL users should upgrade to these updated packages, which contain backported patches to resolve these issues. For the update to take effect, all running OpenSSL client applications must be restarted, or the system rebooted.

Topics%20covered

Topics Covered

security advisory Red Hat OpenSSL important man-in-the-middle certificate validation SSL/TLS

References

https://www.cve.org/CVERecord?id=CVE-2008-5077 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux AS (Advanced Server) version 2.1 :
Source:
i386: openssl-0.9.6b-49.i386.rpm openssl-0.9.6b-49.i686.rpm openssl-devel-0.9.6b-49.i386.rpm openssl-perl-0.9.6b-49.i386.rpm openssl095a-0.9.5a-34.i386.rpm openssl096-0.9.6-34.i386.rpm
ia64: openssl-0.9.6b-49.ia64.rpm openssl-devel-0.9.6b-49.ia64.rpm openssl-perl-0.9.6b-49.ia64.rpm openssl095a-0.9.5a-34.ia64.rpm openssl096-0.9.6-34.ia64.rpm
Red Hat Linux Advanced Workstation 2.1:
Source:
ia64: openssl-0.9.6b-49.ia64.rpm openssl-devel-0.9.6b-49.ia64.rpm openssl-perl-0.9.6b-49.ia64.rpm openssl095a-0.9.5a-34.ia64.rpm openssl096-0.9.6-34.ia64.rpm
Red Hat Enterprise Linux ES version 2.1:
Source:
i386: openssl-0.9.6b-49.i386.rpm openssl-0.9.6b-49.i686.rpm openssl-devel-0.9.6b-49.i386.rpm openssl-perl-0.9.6b-49.i386.rpm
Red Hat Enterprise Linux WS version 2.1:
Source:
i386: openssl-0.9.6b-49.i386.rpm openssl-0.9.6b-49.i686.rpm openssl-devel-0.9.6b-49.i386.rpm openssl-perl-0.9.6b-49.i386.rpm
Red Hat Enterprise Linux AS version 3:
Source:
i386: openssl-0.9.7a-33.25.i386.rpm openssl-0.9.7a-33.25.i686.rpm openssl-debuginfo-0.9.7a-33.25.i386.rpm openssl-debuginfo-0.9.7a-33.25.i686.rpm openssl-devel-0.9.7a-33.25.i386.rpm openssl-perl-0.9.7a-33.25.i386.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2009:0004-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2009:0004.html
Issue date: 2009-01-07

Topic

Updated OpenSSL packages that correct a security issue are now available for Red Hat Enterprise Linux 2.1, 3, 4, and 5.

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

Topics%20covered

Topics Covered

security advisory Red Hat OpenSSL important man-in-the-middle certificate validation SSL/TLS

Relevant Releases Architectures

Red Hat Enterprise Linux AS (Advanced Server) version 2.1 - i386, ia64

Red Hat Linux Advanced Workstation 2.1 - ia64

Red Hat Enterprise Linux ES version 2.1 - i386

Red Hat Enterprise Linux WS version 2.1 - i386

Red Hat Enterprise Linux AS version 3 - i386, ia64, ppc, s390, s390x, x86_64

Red Hat Desktop version 3 - i386, x86_64

Red Hat Enterprise Linux ES version 3 - i386, ia64, x86_64

Red Hat Enterprise Linux WS version 3 - i386, ia64, x86_64

Red Hat Enterprise Linux AS version 4 - i386, ia64, ppc, s390, s390x, x86_64

Red Hat Enterprise Linux Desktop version 4 - i386, x86_64

Red Hat Enterprise Linux ES version 4 - i386, ia64, x86_64

Red Hat Enterprise Linux WS version 4 - i386, ia64, x86_64

Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64

RHEL Desktop Workstation (v. 5 client) - i386, x86_64

Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64

Bugs Fixed

476671 - CVE-2008-5077 OpenSSL Incorrect checks for malformed signatures

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