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Scientific Linux 5/6: OpenSSL Low-Level Update CVE-2013-0169 Denial of Service Notice

Moderate: openssl security update. Date: Mon, 4 Mar 2013 16:58:32 -0600 Reply-To: Pat Riehecky Sender: Security Errata for Scientific Linux From: Pat Riehecky Organization: Fermilab Subject: Security ERRATA Moderate: openssl on SL5.x, SL6.x i386/x86_64 MIME-Version: 1.0 Synopsis: Moderate: openssl security update Issue Date: 2013-03-04 CVE Numbers: CVE-2013-0169 CVE-2012-4929 CVE-2013-0166 -- It was discovered that OpenSSL leaked timing information when decrypting TLS/SSL and DTLS protocol encrypted records when CBC-mode cipher suites were used. A remote attacker could possibly use this flaw to retrieve plain text from the encrypted packets by using a TLS/SSL or DTLS server as a padding oracle. (CVE-2013-0169) A NULL pointer dereference flaw was found in the OCSP response verification in OpenSSL. A malicious OCSP server could use this flaw to crash applications performing OCSP verification by sending a specially- crafted response. (CVE-2013-0166) It was discovered that the TLS/SSL protocol could leak information about plain text when optional compression was used. An attacker able to control part of the plain text sent over an encrypted TLS/SSL connection could possibly use this flaw to recover other portions of the plain text. (CVE-2012-4929) Note: This update disables zlib compression, which was previously enabled in OpenSSL by default. Applications using OpenSSL now need to explicitly enable zlib compression to use it. It was found that OpenSSL read certain environment variables even when used by a privileged (setuid or setgid) application. A local attacker could use this flaw to escalate their privileges. No application shipped with Scientific Linux 5 and 6 was affected by this problem. For the update to take effect, all services linked to the OpenSSL library must be restarted, or the system rebooted. -- SL5 x86_64 openssl-0.9.8e-26.el5_9.1.i686.rpm openssl-0.9.8e-26.el5_9.1.x86_64.rpm openssl-debuginfo-0.9.8e-26.el5_9.1.i686.rpm openssl-debuginfo-0.9.8e-26.el5_9.1.x86_64.rpm openssl-perl-0.9.8e-26.el5_9.1.x86_64.rpm openssl-debuginfo-0.9.8e-26.el5_9.1.i386.rpm openssl-devel-0.9.8e-26.el5_9.1.i386.rpm openssl-devel-0.9.8e-26.el5_9.1.x86_64.rpm i386 openssl-0.9.8e-26.el5_9.1.i386.rpm openssl-0.9.8e-26.el5_9.1.i686.rpm openssl-debuginfo-0.9.8e-26.el5_9.1.i386.rpm openssl-debuginfo-0.9.8e-26.el5_9.1.i686.rpm openssl-perl-0.9.8e-26.el5_9.1.i386.rpm openssl-devel-0.9.8e-26.el5_9.1.i386.rpm SL6 x86_64 openssl-1.0.0-27.el6_4.2.i686.rpm openssl-1.0.0-27.el6_4.2.x86_64.rpm openssl-debuginfo-1.0.0-27.el6_4.2.i686.rpm openssl-debuginfo-1.0.0-27.el6_4.2.x86_64.rpm openssl-devel-1.0.0-27.el6_4.2.i686.rpm openssl-devel-1.0.0-27.el6_4.2.x86_64.rpm openssl-perl-1.0.0-27.el6_4.2.x86_64.rpm openssl-static-1.0.0-27.el6_4.2.x86_64.rpm i386 openssl-1.0.0-27.el6_4.2.i686.rpm openssl-debuginfo-1.0.0-27.el6_4.2.i686.rpm openssl-devel-1.0.0-27.el6_4.2.i686.rpm openssl-perl-1.0.0-27.el6_4.2.i686.rpm openssl-static-1.0.0-27.el6_4.2.i686.rpm - Scientific Linux Development Team . An update to OpenSSL has been deployed for Scientific Linux, targeting multiple vulnerabilities and recommending essential measures for users.. openssl Security Update, Scientific Linux Errata, Moderate Vulnerability, TLS/SSL Flaw. . LinuxSecurity.com Team

Mar 04, 2013 Scientific Linux