Moderate: Red Hat Security Advisory: nss security update

Updated nss and nss-util packages that fix one security issue, several bugs and add various enhancements are now available for Red Hat Enterprise Linux 6 and 7. Red Hat Product Security has rated this update as having Moderate security impact. Common Vulnerability Scoring System CVSS base scores,...

NSS: incorrectly permited skipping of ServerKeyExchange (MFSA 2015-71)

It was found that NSS permitted skipping of the ServerKeyExchange packet during a handshake involving ECDHE Elliptic Curve Diffie-Hellman key Exchange. A remote attacker could use this flaw to bypass the forward-secrecy of a TLS/SSL connection...

LOGJAM: TLS connections which support export grade DHE key-exchange are vulnerable to MITM attacks

A flaw was found in the way the TLS protocol composes the Diffie-Hellman exchange for both export and non-export grade cipher suites. An attacker could use this flaw to downgrade a DHE connection to use export-grade key sizes, which could then be broken by sufficient pre-computation. This can lea...

Amazon Linux AMI : openssl (ALAS-2015-550) (Logjam)

LOGJAM: A flaw was found in the way the TLS protocol composes the Diffie-Hellman exchange for both export and non-export grade cipher suites. An attacker could use this flaw to downgrade a DHE connection to use export-grade key sizes, which could then be broken by sufficient pre-computation. This...

BSA-2015-1935

Security Advisory ID : BSA-2015-1935 Component : TLS protocol 1.2 Revision : 5.0 The TLS protocol 1.2 and earlier, when a DHEEXPORT ciphersuite is enabled on a server but not on a client, does not properly convey a DHEEXPORT choice, which allows man-in-the-middle attackers to conduct...

Medium: openssl

Issue Overview: LOGJAM: A flaw was found in the way the TLS protocol composes the Diffie-Hellman exchange for both export and non-export grade cipher suites. An attacker could use this flaw to downgrade a DHE connection to use export-grade key sizes, which could then be broken by sufficient...

FreeBSD-SA-15:10.openssl

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 ============================================================================= FreeBSD-SA-15:10.openssl Security Advisory The FreeBSD Project Topic: Multiple OpenSSL vulnerabilities Category: contrib Module: openssl Announced: 2015-06-12 Affects: All...

OpenSSL Patches Five Flaws, Adds Protection Against Logjam Attack

The OpenSSL project has patched several moderate- and low-severity security vulnerabilities and also has added protection against the Logjam attack in new releases of the software. Most of the vulnerabilities fixed in the new releases are denial-of-service bugs, but one of them can potentially...

CentOS Update for openssl CESA-2015:1072 centos7

Check the version of openssl SPDX-FileCopyrightText: 2015 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 scriptoid"1.3.6.1.4.1.25623.1.0.882194";...

RedHat Update for openssl RHSA-2015:1072-01

The remote host is missing an update for the SPDX-FileCopyrightText: 2015 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...

Unjam the logjam

Security Unjam the logjam Share June 9th, 2015 When a browser and website communicate over a secure connection, they encrypt and decrypt the data using a shared symmetric encryption key; the same key is used for encryption and decryption. In order for the browser and server to make sure they use...

CentOS 6 / 7 : openssl (CESA-2015:1072) (Logjam)

Updated openssl packages that fix one security issue are now available for Red Hat Enterprise Linux 6 and 7. Red Hat Product Security has rated this update as having Moderate security impact. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is availab...

Moderate: Red Hat Security Advisory: openssl security update

Updated openssl packages that fix one security issue are now available for Red Hat Enterprise Linux 6 and 7. Red Hat Product Security has rated this update as having Moderate security impact. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is availab...

SSL/TLS Diffie-Hellman Modulus <= 1024 Bits (Logjam)

The remote host allows SSL/TLS connections with one or more Diffie-Hellman moduli less than or equal to 1024 bits. Through cryptanalysis, a third party may be able to find the shared secret in a short amount of time depending on modulus size and attacker resources. This may allow an attacker to...

Logjam attacks-the new encryption bug affects a large number of users-bug warning-the black bar safety net

Diffie-Hellman key exchange technology is one of the popular encryption algorithm which allows the Internet Protocol uses a shared key and a secure link. It is a multi-Protocol based including HTTPS, SSH, IPsec, SMTPS and some rely on the TLS Protocol. We have found a number of Diffie-Hellman key...

CVE-2015-4000 - Citrix Security Advisory for DHE_EXPORT TLS Vulnerability

Overview A TLS protocol vulnerability has been recently disclosed that could result in attackers being able to intercept and modify SSL/TLS encrypted traffic to servers that support Diffie-Hellman based export cipher suites. This vulnerability is known as 'LogJam' and has been assigned the...

DEBIAN-CVE-2015-4000

The TLS protocol 1.2 and earlier, when a DHEEXPORT ciphersuite is enabled on a server but not on a client, does not properly convey a DHEEXPORT choice, which allows man-in-the-middle attackers to conduct cipher-downgrade attacks by rewriting a ClientHello with DHE replaced by DHEEXPORT and then...

TLS protocol man-in-the-middle attack vulnerability

TLS Transport Layer Security is a set of protocols used to provide confidentiality and data integrity between two communicating applications. A security vulnerability exists in the TLS protocol version 1.2 and earlier. When the server enabled the DHEEXPORT cipher suite, the program failed to...

CVE-2015-4000

The TLS protocol 1.2 and earlier, when a DHEEXPORT ciphersuite is enabled on a server but not on a client, does not properly convey a DHEEXPORT choice, which allows man-in-the-middle attackers to conduct cipher-downgrade attacks by rewriting a ClientHello with DHE replaced by DHEEXPORT and then...

New Logjam Attack on Diffie-Hellman Threatens Security of Browsers, VPNs

Researchers have uncovered a flaw in the way that some servers handle the Diffie-Hellman key exchange, a bug that’s somewhat similar to the FREAK attack and threatens the security of many Web and mail servers. The bug affects all of the major browsers and any server that supports export-grade...