Amazon Linux AMI : openssl (ALAS-2016-661) (DROWN) (SLOTH)

A padding oracle flaw was found in the Secure Sockets Layer version 2.0 SSLv2 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...

OpenSSL: SSLv2 doesn't block disabled ciphers

A flaw was found in the way malicious SSLv2 clients could negotiate SSLv2 ciphers that were disabled on the server. This could result in weak SSLv2 ciphers being used for SSLv2 connections, making them vulnerable to man-in-the-middle attacks...

openssl: Divide-and-conquer session key recovery in SSLv2

It was discovered that the SSLv2 servers using OpenSSL accepted SSLv2 connection handshakes that indicated non-zero clear key length for non-export cipher suites. An attacker could use this flaw to decrypt recorded SSLv2 sessions with the server by using it as a decryption oracle...

OpenSSL: SSLv2 doesn't block disabled ciphers

A flaw was found in the way malicious SSLv2 clients could negotiate SSLv2 ciphers that were disabled on the server. This could result in weak SSLv2 ciphers being used for SSLv2 connections, making them vulnerable to man-in-the-middle attacks...

openssl: assertion failure in SSLv2 servers

A denial of service flaw was found in the way OpenSSL handled SSLv2 handshake messages. A remote attacker could use this flaw to cause a TLS/SSL server using OpenSSL to exit on a failed assertion if it had both the SSLv2 protocol and EXPORT-grade cipher suites enabled...

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...

SOL95463126 - OpenSSL vulnerabilities CVE-2016-0703 and CVE-2016-0704

Vulnerability Recommended Actions If you are running a version listed in the Versions known to be vulnerable column, you can eliminate this vulnerability by upgrading to a version listed in the Versions known to be not vulnerable column. If the table lists only an older version than what you are...

Testing TLS/SSL encryption: testssl.sh

testssl.sh is a free command line tool which checks a server’s service on any port for the support of TLS/SSL ciphers, protocols as well as some cryptographic flaws. It’s designed to provide clear output in any case. Testing TLS/SSL encryption: testssl.sh Key features Clear output: you can tell...

SUSE SLED11 Security Update : compat-openssl097g (SUSE-SU-2016:0631-1) (DROWN)

This update for compat-openssl097g fixes the following issues : - CVE-2016-0800 aka the 'DROWN' attack bsc968046: OpenSSL was vulnerable to a cross-protocol attack that could lead to decryption of TLS sessions by using a server supporting SSLv2 and EXPORT cipher suites as a Bleichenbacher RSA...

SUSE SLED11 / SLES11 Security Update : openssl (SUSE-SU-2016:0624-1) (DROWN)

This update for openssl fixes various security issues and bugs : Security issues fixed : - CVE-2016-0800 aka the 'DROWN' attack bsc968046: OpenSSL was vulnerable to a cross-protocol attack that could lead to decryption of TLS sessions by using a server supporting SSLv2 and EXPORT cipher suites as...

SUSE: Security Advisory for openssl (SUSE-SU-2016:0641-1)

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...

SUSE SLED12 / SLES12 Security Update : openssl (SUSE-SU-2016:0641-1) (DROWN)

This update for compat-openssl098 fixes various security issues and bugs : Security issues fixed : - CVE-2016-0800 aka the 'DROWN' attack bsc968046: OpenSSL was vulnerable to a cross-protocol attack that could lead to decryption of TLS sessions by using a server supporting SSLv2 and EXPORT cipher...

SUSE-SU-2016:0641-1 Security update for openssl

This update for compat-openssl098 fixes various security issues and bugs: Security issues fixed: - CVE-2016-0800 aka the 'DROWN' attack bsc968046: OpenSSL was vulnerable to a cross-protocol attack that could lead to decryption of TLS sessions by using a server supporting SSLv2 and EXPORT cipher...

openSUSE Security Update : libqt5-qtbase (openSUSE-2016-613)

This update for libqt5-qtbase fixes the following issues : - boo865241: disable RC4 based ciphers which are now considered insecure The following non-security bugs were fixed : - boo957006: dolphin freeze when opening a folder containing symlinks to special files %NASLMINLEVEL 70300 C Tenable...

SUSE-SU-2016:0631-1 Security update for compat-openssl097g

This update for compat-openssl097g fixes the following issues: - CVE-2016-0800 aka the 'DROWN' attack bsc968046: OpenSSL was vulnerable to a cross-protocol attack that could lead to decryption of TLS sessions by using a server supporting SSLv2 and EXPORT cipher suites as a Bleichenbacher RSA...

Cross-protocol attack on TLS using SSLv2 (DROWN) (CVE-2016-0800)

现在流行的服务器和客户端使用TLS加密, 然而由于错误配置, 许多服务器仍然支持SSLv2, 这是一种古老的协议, 许多客户端已经不支持 SSLv2。 DROWN攻击可以威胁到还在支持 SSLv2 的服务端和客户端,允许攻击者通过发送 probe 到支持 SSLv2 的使用相同密钥的服务端和客户端解密 TLS 通信。 官方关于漏洞的公告: A cross-protocol attack was discovered that could lead to decryption of TLS sessions by using a server supporting SSLv2 and...

OpenSSL Cross-Protocol Attack Vulnerability

OpenSSL is a general-purpose open source cryptographic library that implements Secure Sockets Layer and Secure Transport Layer protocols and can support a variety of cryptographic algorithms, including symmetric ciphers, hashing algorithms, secure hashing algorithms, and so on. Cross-protocol...

ownCloud: DROWN Attack

Hi, I want to report a drown attack in .owncloud.com. 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 serve...

OpenSSL: SSLv2 doesn't block disabled ciphers

A flaw was found in the way malicious SSLv2 clients could negotiate SSLv2 ciphers that were disabled on the server. This could result in weak SSLv2 ciphers being used for SSLv2 connections, making them vulnerable to man-in-the-middle attacks...

Important: Red Hat Security Advisory: openssl security update

Updated openssl packages that fix multiple security issues are now available for Red Hat Enterprise Linux 6 and 7. Red Hat Product Security has rated this update as having Important security impact. Common Vulnerability Scoring System CVSS base scores, which give detailed severity ratings, are...