===================================================================== Red Hat Security Advisory Synopsis: Moderate: openssl097a security update Advisory ID: RHSA-2010:0164-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2010-0164.html Issue date: 2010-03-25 CVE Names: CVE-2009-3555 ===================================================================== 1. Summary: Updated openssl097a packages that fix a security issue are now available for Red Hat Enterprise Linux 5. The Red Hat Security Response Team has rated this update as having moderate security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section. 2. Relevant releases/architectures: Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64 Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64 3. 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 flaw was found in the way the TLS/SSL (Transport Layer Security/Secure Sockets Layer) protocols handled session renegotiation. A man-in-the-middle attacker could use this flaw to prefix arbitrary plain text to a client's session (for example, an HTTPS connection to a website). This could force the server to process an attacker's request as if authenticated using the victim's credentials. This update addresses this flaw by implementing the TLS Renegotiation Indication Extension, as defined in RFC 5746. (CVE-2009-3555) Refer to the following Knowledgebase article for additional details about this flaw: https://kbase.redhat.com/faq/docs/DOC-20491 All openssl097a users should upgrade to these updated packages, which contain a backported patch to resolve this issue. For the update to take effect, all services linked to the openssl097a library must be restarted, or the system rebooted. 4. 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 https://kbase.redhat.com/faq/docs/DOC-11259 5. Bugs fixed (https://bugzilla.redhat.com/): 533125 - CVE-2009-3555 TLS: MITM attacks via session renegotiation 6. Package List: Red Hat Enterprise Linux Desktop (v. 5 client): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/openssl097a-0.9.7a-9.el5_4.2.src.rpm i386: openssl097a-0.9.7a-9.el5_4.2.i386.rpm openssl097a-debuginfo-0.9.7a-9.el5_4.2.i386.rpm x86_64: openssl097a-0.9.7a-9.el5_4.2.i386.rpm openssl097a-0.9.7a-9.el5_4.2.x86_64.rpm openssl097a-debuginfo-0.9.7a-9.el5_4.2.i386.rpm openssl097a-debuginfo-0.9.7a-9.el5_4.2.x86_64.rpm Red Hat Enterprise Linux (v. 5 server): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/openssl097a-0.9.7a-9.el5_4.2.src.rpm i386: openssl097a-0.9.7a-9.el5_4.2.i386.rpm openssl097a-debuginfo-0.9.7a-9.el5_4.2.i386.rpm ia64: openssl097a-0.9.7a-9.el5_4.2.i386.rpm openssl097a-0.9.7a-9.el5_4.2.ia64.rpm openssl097a-debuginfo-0.9.7a-9.el5_4.2.i386.rpm openssl097a-debuginfo-0.9.7a-9.el5_4.2.ia64.rpm ppc: openssl097a-0.9.7a-9.el5_4.2.ppc.rpm openssl097a-0.9.7a-9.el5_4.2.ppc64.rpm openssl097a-debuginfo-0.9.7a-9.el5_4.2.ppc.rpm openssl097a-debuginfo-0.9.7a-9.el5_4.2.ppc64.rpm s390x: openssl097a-0.9.7a-9.el5_4.2.s390.rpm openssl097a-0.9.7a-9.el5_4.2.s390x.rpm openssl097a-debuginfo-0.9.7a-9.el5_4.2.s390.rpm openssl097a-debuginfo-0.9.7a-9.el5_4.2.s390x.rpm x86_64: openssl097a-0.9.7a-9.el5_4.2.i386.rpm openssl097a-0.9.7a-9.el5_4.2.x86_64.rpm openssl097a-debuginfo-0.9.7a-9.el5_4.2.i386.rpm openssl097a-debuginfo-0.9.7a-9.el5_4.2.x86_64.rpm These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://www.redhat.com/security/team/key/#package 7. References: https://www.redhat.com/security/data/cve/CVE-2009-3555.html https://www.redhat.com/security/updates/classification/#moderate https://kbase.redhat.com/faq/docs/DOC-20491 https://kbase.redhat.com/faq/docs/DOC-26039 8. Contact: The Red Hat security contact is
. More contact details at https://www.redhat.com/security/team/contact/ Copyright 2010 Red Hat, Inc.