openssl: SSLv2 Bleichenbacher protection overwrites wrong bytes for export ciphers

It was discovered that the SSLv2 protocol implementation in OpenSSL did not properly implement the Bleichenbacher protection for export cipher suites. An attacker could use a SSLv2 server using OpenSSL as a Bleichenbacher oracle...

Important: Red Hat Security Advisory: openssl security update

Updated openssl packages that fix multiple security issues are now available for Red Hat Enterprise Linux 4 Extended Lifecycle Support. Red Hat Product Security has rated this update as having Important security impact. Common Vulnerability Scoring System CVSS base scores, which give detailed...

CVE-2016-0800

The SSLv2 protocol, as used in OpenSSL before 1.0.1s and 1.0.2 before 1.0.2g and other products, requires a server to send a ServerVerify message before establishing that a client possesses certain plaintext RSA data, which makes it easier for remote attackers to decrypt TLS ciphertext data by...

CVE-2016-0703

The getclientmasterkey function in s2srvr.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 accepts a nonzero CLIENT-MASTER-KEY CLEAR-KEY-LENGTH value for an arbitrary cipher, which allows man-in-the-middle attackers to...

Vulnerability in OpenSSL - Bleichenbacher oracle in SSLv2

This issue only affected versions of OpenSSL prior to March 19th 2015 at which time the code was refactored to address the vulnerability CVE-2015-0293. s2srvr.c overwrite the wrong bytes in the master-key when applying Bleichenbacher protection for export cipher suites. This provides a...

CVE-2016-0800

The SSLv2 protocol, as used in OpenSSL before 1.0.1s and 1.0.2 before 1.0.2g and other products, requires a server to send a ServerVerify message before establishing that a client possesses certain plaintext RSA data, which makes it easier for remote attackers to decrypt TLS ciphertext data by...

CVE-2016-0800

The SSLv2 protocol, as used in OpenSSL before 1.0.1s and 1.0.2 before 1.0.2g and other products, requires a server to send a ServerVerify message before establishing that a client possesses certain plaintext RSA data, which makes it easier for remote attackers to decrypt TLS ciphertext data by...

SSL DROWN Attack Vulnerability (Decrypting RSA with Obsolete and Weakened eNcryption)

The remote host supports SSLv2 and therefore may be affected by a vulnerability that allows a cross-protocol Bleichenbacher padding oracle attack known as DROWN Decrypting RSA with Obsolete and Weakened eNcryption. This vulnerability exists due to a flaw in the Secure Sockets Layer Version 2 SSLv...

OpenSSL 1.0.1 < 1.0.1s / 1.0.2 < 1.0.2g Multiple Vulnerabilities (DROWN)

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CVE-2016-0800

CVE-2016-0800 describes a cross-protocol attack (DROWN) where an OpenSSL server that supports SSLv2 and EXPORT-grade cipher suites can be used as a Bleichenbacher padding oracle to decrypt TLS traffic. The issue arises from the server verifying certain plaintext RSA data before completing TLS, en...

SSLv2 Cross-Protocol Session Decryption Vulnerability (DROWN)

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Amazon Linux: Security Advisory (ALAS-2016-644)

The remote host is missing an update for the SPDX-FileCopyrightText: 2016 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

Amazon Linux AMI : python-rsa (ALAS-2016-644)

It was found that python-rsa is vulnerable to Bleichenbacher'06 attack, allowing attacker to fake signatures for any public key with low exponent. CVE-2016-1494 C Tenable Network Security, Inc. The descriptive text and package checks in this plugin were extracted from Amazon Linux AMI Security...

Medium: python-rsa

Issue Overview: It was found that python-rsa is vulnerable to Bleichenbacher'06 attack, allowing attacker to fake signatures for any public key with low exponent. CVE-2016-1494 Affected Packages: python-rsa Issue Correction: Run yum update python-rsa or yum update --advisory ALAS-2016-644 to upda...

FreeBSD : py-rsa -- Bleichenbacher'06 signature forgery vulnerability (e78bfc9d-cb1e-11e5-b251-0050562a4d7b)

Filippo Valsorda reports : python-rsa is vulnerable to a straightforward variant of the Bleichenbacher'06 attack against RSA signature verification with low public exponent. %NASLMINLEVEL 70300 C Tenable Network Security, Inc. The descriptive text and package checks in this plugin were extracted...

Python-rsa signature forgery-vulnerability warning-the black bar safety net

! By looking at the python-rsa source code, we found that it is the presence of a vulnerability is based on Bleichenbacher'0 6 attack research out for the RSA signature forgery of a simple variant, is due to the public key index is too low. The vulnerability can lead to arbitrary information to...

SUSE-SU-2016:0107-1 Security update for python-rsa

This update for python-rsa fixes the following security issue: CVE-2016-1494: Possible signature forgery via Bleichenbacher attack bsc960680...

py-rsa -- Bleichenbacher'06 signature forgery vulnerability

Filippo Valsorda reports: python-rsa is vulnerable to a straightforward variant of the Bleichenbacher'06 attack against RSA signature verification with low public exponent...

wss4j: Apache WSS4J is vulnerable to Bleichenbacher's attack (incomplete fix for CVE-2011-2487)

It was found that a prior countermeasure in Apache WSS4J for Bleichenbacher's attack on XML Encryption CVE-2011-2487 threw an exception that permitted an attacker to determine the failure of the attempted attack, thereby leaving WSS4J vulnerable to the attack. The original flaw allowed a remote...

wss4j: Apache WSS4J is vulnerable to Bleichenbacher's attack (incomplete fix for CVE-2011-2487)

It was found that a prior countermeasure in Apache WSS4J for Bleichenbacher's attack on XML Encryption CVE-2011-2487 threw an exception that permitted an attacker to determine the failure of the attempted attack, thereby leaving WSS4J vulnerable to the attack. The original flaw allowed a remote...