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OpenSSL Bleichenbacher oracle in SSLv2 (CVE-2016-0704)

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OpenSSL Bleichenbacher oracle in SSLv2 (CVE-2016-0704)

Severity
4
CVSS
(AV:N/AC:M/Au:N/C:P/I:N/A:N)
Published
03/01/2016
Created
07/25/2018
Added
03/01/2016
Modified
10/30/2017

Description

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.

Solution(s)

  • http-openssl-0_9_8-upgrade-0_9_8_z_f
  • http-openssl-1_0_0-upgrade-1_0_0_r
  • http-openssl-1_0_1-upgrade-1_0_1_m
  • http-openssl-1_0_2-upgrade-1_0_2_a

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