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CVE-2016-0704

Status Candidate

Overview

An oracle protection mechanism in the get_client_master_key function in s2_srvr.c in the SSLv2 implementation in OpenSSL before 0.9.8zf, 1.0.0 before 1.0.0r, 1.0.1 before 1.0.1m, and 1.0.2 before 1.0.2a overwrites incorrect MASTER-KEY bytes during use of export cipher suites, which makes it easier for remote attackers to decrypt TLS ciphertext data by leveraging a Bleichenbacher RSA padding oracle, a related issue to CVE-2016-0800.

Related Files

HPE Security Bulletin HPESBHF03741 1
Posted May 4, 2017
Authored by Hewlett Packard Enterprise | Site hpe.com

HPE Security Bulletin HPESBHF03741 1 - Potential security vulnerabilities with OpenSSL have been addressed for HPE Network products including Comware 7, IMC, and VCX. The vulnerabilities could be remotely exploited resulting in Denial of Service (DoS) or disclosure of sensitive information, or locally exploited resulting in unauthorized disclosure of information. Revision 1 of this advisory.

tags | advisory, denial of service, vulnerability
advisories | CVE-2016-0702, CVE-2016-0703, CVE-2016-0704, CVE-2016-0705, CVE-2016-0797, CVE-2016-0798, CVE-2016-0799, CVE-2016-0800, CVE-2016-2842
SHA-256 | 273a8e07f2cfd72d286f3067512289a13cef04a30487bc2abfabe81687e89a5e
Gentoo Linux Security Advisory 201603-15
Posted Mar 21, 2016
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 201603-15 - Multiple vulnerabilities have been found in OpenSSL, the worst allowing remote attackers to decrypt TLS sessions. Versions less than 1.0.2g-r2 are affected.

tags | advisory, remote, vulnerability
systems | linux, gentoo
advisories | CVE-2016-0702, CVE-2016-0703, CVE-2016-0704, CVE-2016-0705, CVE-2016-0797, CVE-2016-0798, CVE-2016-0799, CVE-2016-0800
SHA-256 | 6f0722d9e284f07b269abf7998e9e52da12fdf8dcb8e32ab4f709a7b253f0481
FreeBSD Security Advisory - FreeBSD-SA-16:12.openssl
Posted Mar 14, 2016
Authored by OpenSSL Project | Site security.freebsd.org

FreeBSD Security Advisory - A cross-protocol attack was discovered that could lead to decryption of TLS sessions by using a server supporting SSLv2 and EXPORT cipher suites as a Bleichenbacher RSA padding oracle. Note that traffic between clients and non-vulnerable servers can be decrypted provided another server supporting SSLv2 and EXPORT ciphers (even with a different protocol such as SMTP, IMAP or POP3) shares the RSA keys of the non-vulnerable server. This vulnerability is known as DROWN. Various other issues were also addressed.

tags | advisory, imap, protocol
systems | freebsd, bsd
advisories | CVE-2016-0702, CVE-2016-0703, CVE-2016-0704, CVE-2016-0705
SHA-256 | 3dc25b95a3b0e894796bebc78d2c22db92393a6b8fa48106e84605e40b76a348
Red Hat Security Advisory 2016-0372-01
Posted Mar 9, 2016
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2016-0372-01 - OpenSSL is a toolkit that implements the Secure Sockets Layer and Transport Layer Security protocols, as well as a full-strength, general purpose cryptography library. A padding oracle flaw was found in the Secure Sockets Layer version 2.0 protocol. An attacker can potentially use this flaw to decrypt RSA-encrypted cipher text from a connection using a newer SSL/TLS protocol version, allowing them to decrypt such connections. This cross-protocol attack is publicly referred to as DROWN.

tags | advisory, protocol
systems | linux, redhat
advisories | CVE-2015-0293, CVE-2015-3197, CVE-2016-0703, CVE-2016-0704, CVE-2016-0800
SHA-256 | aa8f036d56f9b0e13c768cf2151510ad156a6f08cfe9d1ec6ed4a22fc748a223
Red Hat Security Advisory 2016-0306-01
Posted Mar 2, 2016
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2016-0306-01 - OpenSSL is a toolkit that implements the Secure Sockets Layer and Transport Layer Security protocols, as well as a full-strength, general purpose cryptography library. A padding oracle flaw was found in the Secure Sockets Layer version 2.0 protocol. An attacker can potentially use this flaw to decrypt RSA-encrypted cipher text from a connection using a newer SSL/TLS protocol version, allowing them to decrypt such connections. This cross-protocol attack is publicly referred to as DROWN.

tags | advisory, protocol
systems | linux, redhat
advisories | CVE-2015-0293, CVE-2015-3197, CVE-2016-0703, CVE-2016-0704, CVE-2016-0800
SHA-256 | 12d8bd2deb212825bc9f9f56e0fa1b109f58f9c894fcecb04e7ee03e38ed646e
Red Hat Security Advisory 2016-0304-01
Posted Mar 2, 2016
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2016-0304-01 - OpenSSL is a toolkit that implements the Secure Sockets Layer and Transport Layer Security protocols, as well as a full-strength, general purpose cryptography library. A padding oracle flaw was found in the Secure Sockets Layer version 2.0 protocol. An attacker can potentially use this flaw to decrypt RSA-encrypted cipher text from a connection using a newer SSL/TLS protocol version, allowing them to decrypt such connections. This cross-protocol attack is publicly referred to as DROWN.

tags | advisory, protocol
systems | linux, redhat
advisories | CVE-2015-0293, CVE-2015-3197, CVE-2016-0703, CVE-2016-0704, CVE-2016-0800
SHA-256 | 947119e9fd5d8f11486ab1908732c47d26541cd1c088d1e31ab0fea8539714b4
Red Hat Security Advisory 2016-0303-01
Posted Mar 2, 2016
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2016-0303-01 - OpenSSL is a toolkit that implements the Secure Sockets Layer and Transport Layer Security protocols, as well as a full-strength, general purpose cryptography library. A padding oracle flaw was found in the Secure Sockets Layer version 2.0 protocol. An attacker can potentially use this flaw to decrypt RSA-encrypted cipher text from a connection using a newer SSL/TLS protocol version, allowing them to decrypt such connections. This cross-protocol attack is publicly referred to as DROWN.

tags | advisory, protocol
systems | linux, redhat
advisories | CVE-2015-0293, CVE-2015-3197, CVE-2016-0703, CVE-2016-0704, CVE-2016-0800
SHA-256 | 6c5b44e7561b441a8e824a9fa4d340b6a7a2b33511056e4ef067b57cd2fa096b
OpenSSL Security Advisory 20160301
Posted Mar 1, 2016
Site openssl.org

OpenSSL Security Advisory 20160301 - A cross-protocol attack was discovered that could lead to decryption of TLS sessions by using a server supporting SSLv2 and EXPORT cipher suites as a Bleichenbacher RSA padding oracle. Note that traffic between clients and non-vulnerable servers can be decrypted provided another server supporting SSLv2 and EXPORT ciphers (even with a different protocol such as SMTP, IMAP or POP) shares the RSA keys of the non-vulnerable server. This vulnerability is known as DROWN (CVE-2016-0800). Other issues were also addressed.

tags | advisory, imap, protocol
advisories | CVE-2015-0293, CVE-2015-3197, CVE-2016-0702, CVE-2016-0703, CVE-2016-0704, CVE-2016-0705, CVE-2016-0797, CVE-2016-0798, CVE-2016-0799, CVE-2016-0800
SHA-256 | 01a1884d87908b83b7d1ea8457725884e3808b62f9b3c4b5d54e2a07a55e9dd8
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