CVE-2015-4000: Improper Certificate Validation

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...

LogJam — This New Encryption Glitch Puts Internet Users at Risk

After HeartBleed, POODLE and FREAK encryption flaws, a new encryption attack has been emerged over the Internet that allows attackers to read and modify the sensitive data passing through encrypted connections, potentially affecting hundreds of thousands of HTTPS-protected sites, mail servers, an...

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...

bouncycastle: TLS CBC padding timing attack

It was discovered that bouncycastle leaked timing information when decrypting TLS/SSL protocol encrypted records when CBC-mode cipher suites were used. A remote attacker could possibly use this flaw to retrieve plain text from the encrypted packets by using a TLS/SSL server as a padding oracle...

SSL/TLS: "Invariance Weakness" vulnerability in RC4 stream cipher

The RC4 algorithm, as used in the TLS protocol and SSL protocol, does not properly combine state data with key data during the initialization phase, which makes it easier for remote attackers to conduct plaintext-recovery attacks against the initial bytes of a stream by sniffing network traffic...

OpenSSL Past, Present and Future

Rarely does anything have a defined turning point in its history, a single day where people can point and say that was the day everything changed. For OpenSSL, that day was April 7, 2014, the day that Heartbleed became part of the security lexicon. Heartbleed was a critical vulnerability in the...

CVE-2015-2808

The RC4 algorithm, as used in the TLS protocol and SSL protocol, does not properly combine state data with key data during the initialization phase, which makes it easier for remote attackers to conduct plaintext-recovery attacks against the initial bytes of a stream by sniffing network traffic...

Design/Logic Flaw

The RC4 algorithm, as used in the TLS protocol and SSL protocol, does not properly combine state data with key data during the initialization phase, which makes it easier for remote attackers to conduct plaintext-recovery attacks against the initial bytes of a stream by sniffing network traffic...

CVE-2015-2808

The RC4 algorithm, as used in the TLS protocol and SSL protocol, does not properly combine state data with key data during the initialization phase, which makes it easier for remote attackers to conduct plaintext-recovery attacks against the initial bytes of a stream by sniffing network traffic...

CVE-2015-2808

The RC4 algorithm, as used in the TLS protocol and SSL protocol, does not properly combine state data with key data during the initialization phase, which makes it easier for remote attackers to conduct plaintext-recovery attacks against the initial bytes of a stream by sniffing network traffic...

CVE-2015-2808

The RC4 algorithm, as used in the TLS protocol and SSL protocol, does not properly combine state data with key data during the initialization phase, which makes it easier for remote attackers to conduct plaintext-recovery attacks against the initial bytes of a stream by sniffing network traffic...

RedHat Update for ipa RHSA-2015:0442-01

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...

RHEL 7 : ipa (RHSA-2015:0442)

Updated ipa packages that fix two security issues, several bugs, and add various enhancements are now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having Moderate security impact. Common Vulnerability Scoring System CVSS base scores, which give...

Oracle Solaris Third-Party Patch Update : openssl (lucky_thirteen_vulnerability_in_solaris)

The remote Solaris system is missing necessary patches to address security updates : - OpenSSL before 0.9.8y, 1.0.0 before 1.0.0k, and 1.0.1 before 1.0.1d does not properly perform signature verification for OCSP responses, which allows remote OCSP servers to cause a denial of service NULL pointe...

IBM Tivoli Directory Server < 6.0.0.72 / 6.1.0.55 / 6.2.0.30 / 6.3.0.22 with GSKit < 7.0.4.45 / 8.0.14.27 TLS Side-Channel Timing Information Disclosure

The remote host is running a version of IBM Tivoli Directory Server and a version of IBM Global Security Kit GSKit that is affected by an information disclosure vulnerability. The Transport Layer Security TLS protocol does not properly consider timing side-channel attacks, which allows remote...

Important: Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 5.2.0 security update

An update for Red Hat JBoss Enterprise Application Platform 5.2.0 that provides a patch to mitigate the CVE-2014-3566 issue is now available from the Red Hat Customer Portal. Red Hat Product Security has rated this update as having Important security impact. Red Hat JBoss Enterprise Application...

ESA-2014-158: RSA BSAFE® Micro Edition Suite and SSL-J Triple Handshake Vulnerability

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ESA-2014-158: RSA BSAFE® Micro Edition Suite and SSL-J Triple Handshake Vulnerability EMC Identifier: ESA-2014-158 CVE Identifier: CVE-2014-4630 Severity Rating: CVSS v2 Base Score: 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P Affected Products: RSA BSAFE Micro...

POODLE vulnerability comeback, the impact of the TLS secure transmission protocols-vulnerability warning-the black bar safety net

! The Google security team in October found that a high-risk SSL vulnerability POODLE, now it a comeback, this time it is SSL upgrade version-the TLS Protocol. POODLE（Padding Oracle On Downgraded Legacy Encryption）vulnerabilities that had affected the most widely used Encryption Standard-SSL v3. ...

CVE-2 0 1 4-6 3 2 1 schannel heap overflow vulnerability analysis-vulnerability warning-the black bar safety net

0x00 background MS14-0 6 6 CVE-2 0 1 4-6 3 2 1 is present in Microsoft's schannel. dll in the TLS heap buffer overflow vulnerability. The following principles and poc structure for analysis. 0x01 SSL/TLS principle description Https is based on SSL/TLS Http, all http data is in the SSL/TLS Protoco...