-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Moderate: openssl security update Advisory ID: RHSA-2012:0060-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2012-0060.html Issue date: 2012-01-24 CVE Names: CVE-2011-4108 CVE-2011-4109 CVE-2011-4576 CVE-2011-4619 ===================================================================== 1. Summary: 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. 2. Relevant releases/architectures: RHEL Desktop Workstation (v. 5 client) - i386, x86_64 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. 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. 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://access.redhat.com/kb/docs/DOC-11259 5. Bugs fixed (http://bugzilla.redhat.com/): 771770 - CVE-2011-4108 openssl: DTLS plaintext recovery attack 771771 - CVE-2011-4109 openssl: double-free in policy checks 771775 - CVE-2011-4576 openssl: uninitialized SSL 3.0 padding 771780 - CVE-2011-4619 openssl: SGC restart DoS attack 6. Package List: Red Hat Enterprise Linux Desktop (v. 5 client): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/openssl-0.9.8e-20.el5_7.1.src.rpm i386: openssl-0.9.8e-20.el5_7.1.i386.rpm openssl-0.9.8e-20.el5_7.1.i686.rpm openssl-debuginfo-0.9.8e-20.el5_7.1.i386.rpm openssl-debuginfo-0.9.8e-20.el5_7.1.i686.rpm openssl-perl-0.9.8e-20.el5_7.1.i386.rpm x86_64: openssl-0.9.8e-20.el5_7.1.i686.rpm openssl-0.9.8e-20.el5_7.1.x86_64.rpm openssl-debuginfo-0.9.8e-20.el5_7.1.i686.rpm openssl-debuginfo-0.9.8e-20.el5_7.1.x86_64.rpm openssl-perl-0.9.8e-20.el5_7.1.x86_64.rpm RHEL Desktop Workstation (v. 5 client): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/openssl-0.9.8e-20.el5_7.1.src.rpm i386: openssl-debuginfo-0.9.8e-20.el5_7.1.i386.rpm openssl-devel-0.9.8e-20.el5_7.1.i386.rpm x86_64: openssl-debuginfo-0.9.8e-20.el5_7.1.i386.rpm openssl-debuginfo-0.9.8e-20.el5_7.1.x86_64.rpm openssl-devel-0.9.8e-20.el5_7.1.i386.rpm openssl-devel-0.9.8e-20.el5_7.1.x86_64.rpm Red Hat Enterprise Linux (v. 5 server): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/openssl-0.9.8e-20.el5_7.1.src.rpm i386: openssl-0.9.8e-20.el5_7.1.i386.rpm openssl-0.9.8e-20.el5_7.1.i686.rpm openssl-debuginfo-0.9.8e-20.el5_7.1.i386.rpm openssl-debuginfo-0.9.8e-20.el5_7.1.i686.rpm openssl-devel-0.9.8e-20.el5_7.1.i386.rpm openssl-perl-0.9.8e-20.el5_7.1.i386.rpm ia64: openssl-0.9.8e-20.el5_7.1.i686.rpm openssl-0.9.8e-20.el5_7.1.ia64.rpm openssl-debuginfo-0.9.8e-20.el5_7.1.i686.rpm openssl-debuginfo-0.9.8e-20.el5_7.1.ia64.rpm openssl-devel-0.9.8e-20.el5_7.1.ia64.rpm openssl-perl-0.9.8e-20.el5_7.1.ia64.rpm ppc: openssl-0.9.8e-20.el5_7.1.ppc.rpm openssl-0.9.8e-20.el5_7.1.ppc64.rpm openssl-debuginfo-0.9.8e-20.el5_7.1.ppc.rpm openssl-debuginfo-0.9.8e-20.el5_7.1.ppc64.rpm openssl-devel-0.9.8e-20.el5_7.1.ppc.rpm openssl-devel-0.9.8e-20.el5_7.1.ppc64.rpm openssl-perl-0.9.8e-20.el5_7.1.ppc.rpm s390x: openssl-0.9.8e-20.el5_7.1.s390.rpm openssl-0.9.8e-20.el5_7.1.s390x.rpm openssl-debuginfo-0.9.8e-20.el5_7.1.s390.rpm openssl-debuginfo-0.9.8e-20.el5_7.1.s390x.rpm openssl-devel-0.9.8e-20.el5_7.1.s390.rpm openssl-devel-0.9.8e-20.el5_7.1.s390x.rpm openssl-perl-0.9.8e-20.el5_7.1.s390x.rpm x86_64: openssl-0.9.8e-20.el5_7.1.i686.rpm openssl-0.9.8e-20.el5_7.1.x86_64.rpm openssl-debuginfo-0.9.8e-20.el5_7.1.i386.rpm openssl-debuginfo-0.9.8e-20.el5_7.1.i686.rpm openssl-debuginfo-0.9.8e-20.el5_7.1.x86_64.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-perl-0.9.8e-20.el5_7.1.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://access.redhat.com/security/team/key/#package 7. References: https://www.redhat.com/security/data/cve/CVE-2011-4108.html https://www.redhat.com/security/data/cve/CVE-2011-4109.html https://www.redhat.com/security/data/cve/CVE-2011-4576.html https://www.redhat.com/security/data/cve/CVE-2011-4619.html https://access.redhat.com/security/updates/classification/#moderate 8. Contact: The Red Hat security contact is . More contact details at https://access.redhat.com/security/team/contact/ Copyright 2012 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.4 (GNU/Linux) iD8DBQFPHyS1XlSAg2UNWIIRAhxXAKClR3xRopyhygA4PgLUnOqWacOsfwCfSKMv npqkzmNKX5c+YRYaCNRkdvw= =rGKW -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce