11.48.39 [ GLSA 200912-01 ] OpenSSL: Multiple vulnerabilities | ||
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200912-01 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: OpenSSL: Multiple vulnerabilities Date: December 01, 2009 Bugs: #270305, #280591, #292022 ID: 200912-01 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== Multiple vulnerabilities in OpenSSL might allow remote attackers to conduct multiple attacks, including the injection of arbitrary data into encrypted byte streams. Background ========== OpenSSL is an Open Source toolkit implementing the Secure Sockets Layer (SSL v2/v3) and Transport Layer Security (TLS v1) as well as a general purpose cryptography library. Affected packages ================= ------------------------------ Package / Vulnerable / Unaffected ------------------------------ 1 dev-libs/openssl < 0.9.8l-r2 >= 0.9.8l-r2 Description =========== Multiple vulnerabilities have been reported in OpenSSL: * Marsh Ray of PhoneFactor and Martin Rex of SAP independently reported that the TLS protocol does not properly handle session renegotiation requests (CVE-2009-3555). * The MD2 hash algorithm is no longer considered to be cryptographically strong, as demonstrated by Dan Kaminsky. Certificates using this algorithm are no longer accepted (CVE-2009-2409). * Daniel Mentz and Robin Seggelmann reported the following vulnerabilities related to DTLS: A use-after-free flaw (CVE-2009-1379) and a NULL pointer dereference (CVE-2009-1387) in the dtls1_retrieve_buffered_ multiple memory leaks in the dtls1_process_out_of_seq_ function in src/d1_both.c (CVE-2009-1378), and a processing error related to a large amount of DTLS records with a future epoch in the dtls1_buffer_record() function in ssl/d1_pkt.c (CVE-2009-1377). Impact ====== A remote unauthenticated attacker, acting as a Man in the Middle, could inject arbitrary plain text into a TLS session, possibly leading to the ability to send requests as if authenticated as the victim. A remote attacker could furthermore send specially crafted DTLS packages to a service using OpenSSL for DTLS support, possibly resulting in a Denial of Service. Also, a remote attacker might be able to create rouge certificates, facilitated by a MD2 collision. NOTE: The amount of computation needed for this attack is still very large. Workaround ========== There is no known workaround at this time. Resolution ========== All OpenSSL users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=dev-libs/openssl-0.9.8l-r2" References ========== [ 1 ] CVE-2009-1377 http://cve.mitre.org/cgi-bin/ [ 2 ] CVE-2009-1378 http://cve.mitre.org/cgi-bin/ [ 3 ] CVE-2009-1379 http://cve.mitre.org/cgi-bin/ [ 4 ] CVE-2009-1387 http://cve.mitre.org/cgi-bin/ [ 5 ] CVE-2009-2409 http://cve.mitre.org/cgi-bin/ [ 6 ] CVE-2009-3555 http://cve.mitre.org/cgi-bin/ Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/ Concerns? ========= Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org. License ======= Copyright 2009 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license. http://creativecommons.org/
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