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Date: Fri, 09 Jan 2015 16:21:00 +0100 From: security@...driva.com To: bugtraq@...urityfocus.com Subject: [ MDVSA-2015:019 ] openssl -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 _______________________________________________________________________ Mandriva Linux Security Advisory MDVSA-2015:019 http://www.mandriva.com/en/support/security/ _______________________________________________________________________ Package : openssl Date : January 9, 2015 Affected: Business Server 1.0 _______________________________________________________________________ Problem Description: Multiple vulnerabilities has been discovered and corrected in openssl: A carefully crafted DTLS message can cause a segmentation fault in OpenSSL due to a NULL pointer dereference. This could lead to a Denial Of Service attack (CVE-2014-3571). A memory leak can occur in the dtls1_buffer_record function under certain conditions. In particular this could occur if an attacker sent repeated DTLS records with the same sequence number but for the next epoch. The memory leak could be exploited by an attacker in a Denial of Service attack through memory exhaustion (CVE-2015-0206). 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 (CVE-2014-3569). An OpenSSL client will accept a handshake using an ephemeral ECDH ciphersuite using an ECDSA certificate if the server key exchange message is omitted. This effectively removes forward secrecy from the ciphersuite (CVE-2014-3572). An OpenSSL client will accept the use of an RSA temporary key in a non-export RSA key exchange ciphersuite. A server could present a weak temporary key and downgrade the security of the session (CVE-2015-0204). An OpenSSL server will accept a DH certificate for client authentication without the certificate verify message. This effectively allows a client to authenticate without the use of a private key. This only affects servers which trust a client certificate authority which issues certificates containing DH keys: these are extremely rare and hardly ever encountered (CVE-2015-0205). OpenSSL accepts several non-DER-variations of certificate signature algorithm and signature encodings. OpenSSL also does not enforce a match between the signature algorithm between the signed and unsigned portions of the certificate. By modifying the contents of the signature algorithm or the encoding of the signature, it is possible to change the certificate's fingerprint. This does not allow an attacker to forge certificates, and does not affect certificate verification or OpenSSL servers/clients in any other way. It also does not affect common revocation mechanisms. Only custom applications that rely on the uniqueness of the fingerprint (e.g. certificate blacklists) may be affected (CVE-2014-8275). Bignum squaring (BN_sqr) may produce incorrect results on some platforms, including x86_64. This bug occurs at random with a very low probability, and is not known to be exploitable in any way, though its exact impact is difficult to determine (CVE-2014-3570). The updated packages have been upgraded to the 1.0.0p version where these security flaws has been fixed. _______________________________________________________________________ References: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-3571 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-0206 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-3569 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-3572 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-0204 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-0205 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-8275 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-3570 https://www.openssl.org/news/secadv_20150108.txt _______________________________________________________________________ Updated Packages: Mandriva Business Server 1/X86_64: 08baba1b5ee61bdd0bfbcf81d465f154 mbs1/x86_64/lib64openssl1.0.0-1.0.0p-1.mbs1.x86_64.rpm 51198a2b577e182d10ad72d28b67288e mbs1/x86_64/lib64openssl-devel-1.0.0p-1.mbs1.x86_64.rpm aa34fd335001d83bc71810d6c0b14e85 mbs1/x86_64/lib64openssl-engines1.0.0-1.0.0p-1.mbs1.x86_64.rpm c8b6fdaba18364b315e78761a5aa0c1c mbs1/x86_64/lib64openssl-static-devel-1.0.0p-1.mbs1.x86_64.rpm fc67f3da9fcd1077128845ce85be93e2 mbs1/x86_64/openssl-1.0.0p-1.mbs1.x86_64.rpm ab8f672de2bf2f0f412034f89624aa32 mbs1/SRPMS/openssl-1.0.0p-1.mbs1.src.rpm _______________________________________________________________________ To upgrade automatically use MandrivaUpdate or urpmi. The verification of md5 checksums and GPG signatures is performed automatically for you. All packages are signed by Mandriva for security. You can obtain the GPG public key of the Mandriva Security Team by executing: gpg --recv-keys --keyserver pgp.mit.edu 0x22458A98 You can view other update advisories for Mandriva Linux at: http://www.mandriva.com/en/support/security/advisories/ If you want to report vulnerabilities, please contact security_(at)_mandriva.com _______________________________________________________________________ Type Bits/KeyID Date User ID pub 1024D/22458A98 2000-07-10 Mandriva Security Team <security*mandriva.com> -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iD8DBQFUr+PRmqjQ0CJFipgRAtFXAJ46+q0aetnJkb6I9RuYmX5xFeGx9wCgt1rb LHbCdAkBpYHYSuaUwpiAu1w= =ePa9 -----END PGP SIGNATURE-----
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