12 January 2015
Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2015.0056 openssl security update 12 January 2015 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: openssl Publisher: Debian Operating System: Debian GNU/Linux 7 Impact/Access: Denial of Service -- Remote/Unauthenticated Provide Misleading Information -- Remote/Unauthenticated Reduced Security -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2015-0206 CVE-2015-0205 CVE-2015-0204 CVE-2014-8275 CVE-2014-3572 CVE-2014-3571 CVE-2014-3570 CVE-2014-3569 Reference: ESB-2015.0048 Original Bulletin: http://www.debian.org/security/2014/dsa-3125 - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 - - ------------------------------------------------------------------------- Debian Security Advisory DSA-3125-1 email@example.com http://www.debian.org/security/ Salvatore Bonaccorso January 11, 2015 http://www.debian.org/security/faq - - ------------------------------------------------------------------------- Package : openssl CVE ID : CVE-2014-3569 CVE-2014-3570 CVE-2014-3571 CVE-2014-3572 CVE-2014-8275 CVE-2015-0204 CVE-2015-0205 CVE-2015-0206 Multiple vulnerabilities have been discovered in OpenSSL, a Secure Sockets Layer toolkit. The Common Vulnerabilities and Exposures project identifies the following issues: CVE-2014-3569 Frank Schmirler reported that the ssl23_get_client_hello function in OpenSSL does not properly handle attempts to use unsupported protocols. When OpenSSL is built with the no-ssl3 option and a SSL v3 ClientHello is received, the ssl method would be set to NULL which could later result in a NULL pointer dereference and daemon crash. CVE-2014-3570 Pieter Wuille of Blockstream reported that the bignum squaring (BN_sqr) may produce incorrect results on some platforms, which might make it easier for remote attackers to defeat cryptographic protection mechanisms. CVE-2014-3571 Markus Stenberg of Cisco Systems, Inc. reported that a carefully crafted DTLS message can cause a segmentation fault in OpenSSL due to a NULL pointer dereference. A remote attacker could use this flaw to mount a denial of service attack. CVE-2014-3572 Karthikeyan Bhargavan of the PROSECCO team at INRIA reported that an OpenSSL client would accept a handshake using an ephemeral ECDH ciphersuite if the server key exchange message is omitted. This allows remote SSL servers to conduct ECDHE-to-ECDH downgrade attacks and trigger a loss of forward secrecy. CVE-2014-8275 Antti Karjalainen and Tuomo Untinen of the Codenomicon CROSS project and Konrad Kraszewski of Google reported various certificate fingerprint issues, which allow remote attackers to defeat a fingerprint-based certificate-blacklist protection mechanism. CVE-2015-0204 Karthikeyan Bhargavan of the PROSECCO team at INRIA reported that an OpenSSL client will accept the use of an ephemeral RSA key in a non-export RSA key exchange ciphersuite, violating the TLS standard. This allows remote SSL servers to downgrade the security of the session. CVE-2015-0205 Karthikeyan Bhargavan of the PROSECCO team at INRIA reported that an OpenSSL server will accept a DH certificate for client authentication without the certificate verify message. This flaw effectively allows a client to authenticate without the use of a private key via crafted TLS handshake protocol traffic to a server that recognizes a certification authority with DH support. CVE-2015-0206 Chris Mueller discovered a memory leak in the dtls1_buffer_record function. A remote attacker could exploit this flaw to mount a denial of service through memory exhaustion by repeatedly sending specially crafted DTLS records. For the stable distribution (wheezy), these problems have been fixed in version 1.0.1e-2+deb7u14. For the upcoming stable distribution (jessie), these problems will be fixed soon. For the unstable distribution (sid), these problems have been fixed in version 1.0.1k-1. We recommend that you upgrade your openssl packages. Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/ Mailing list: firstname.lastname@example.org - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAEBCgAGBQJUsljCAAoJEAVMuPMTQ89EGdAP/RVr1R8cqanOF+XmsvjVwz64 0TZwwWvUZknuuqy82leNRlcg4XWhHdR4WbFyO5unOFF/iTzDsxV1aYdDkxU76ufL ja1B7zQ3VJDSRf4lS5e2ycf9XcDzoHYnGhk9F8IYXXGVqFkmlbTQp2ZmI3AiFxEy Z5iXXkZkWS5DAoyGjt16axxekzZPmCK+iGGGrXXqysierzdgsdwgnS0ksrRjdKXP 9FuBTD6sGQAZAe7cTpGc3PElujHvBp8/TTWWLk7aWHx8Jsa93NrjSQ0TwAeyP6kD LwoydDLnRdORz5zfrcC/zyZWzBJtlOyNmzAo+pV52mYeNlXn6s+lLMFZbeaOW4bu E57N9u9bBcKCxrhOyg1s8G8hmd9unkv1f/G0N/Bwu6+i86BMYNH8mbJDICdkGCML 6jiitfyFwcU1BfcLu/iMVDGytMYYWz6O6nvOK3tz68y6C8aQoqubdnhXU71oVyua Rvf1KPKDuvRf7zbIg5xWXkjvS+CbMUppgGPxdYRyxETwlU0UxCo9dfVSyO35tS3R +RdFHp/8pWgtxkbMoO2WWrh6UwW3Chpyp7w1f3b2tPsrdSs8P9iRjIbIPWT+V0PV 5D8T6WPqiTu0Q5rhpMo2PHVUQSh96zLFnrdAhxapKMQeGBMdpAU24flboAUdDqKl QOmT1rysszfPJCd6WkUK =Ur11 - -----END PGP SIGNATURE----- - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. 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