logjam

SSL/TLS LogJam mitm Security Restriction Bypass Vulnerability (CVE-2015-4000)SSL/TLS LogJam mitm Security Restriction Bypass Vulnerability (CVE-2015-4000) Release date:Updated on:Affected Systems: OpenSSL Project OpenSSL OpenSSL Project OpenSSL Description: Bugtraq id: 74733CVE (CAN) ID: CVE-2015-4000TLS is a secure transport layer protocol used to provide confidentiality and data integrity between two co

, Twitter, and Facebook."The good news is that these companies are diligent in patching, so the risks will soon be under control," Hays said. The Forward secrecy its protocol attribute is that the message is not allowed to be decrypted with the private key. Therefore, when the private key is acquired, it cannot be used to rewind and restore the old communication. ”OpenSSL1.0.1 is not vulnerable to this attack, and users who use the 1.0.2 version need to install OpenSSL1.0.2 patches as early as p

Diffie-Hellman Key Exchange is a popular encryption algorithm. The disclosed information about the Logjam Vulnerability (a variant of the FREAK vulnerability) has been sent to the browser manufacturer. The administrators of large websites are busy updating and repairing the websites they manage. Currently, only Microsoft's IE browser has patch updates for this vulnerability. Transport Layer Security (TLS) is used to encrypt the communication informa

, January 12, meaning that it took more than two weeks for the official website to fix and distribute the vulnerability. Interestingly, when the researchers reported the vulnerability, the fix for DH key reuse was updated. However, the official website has not released a new version. They have completed some repairs through patches. Do you still remember Logjam? The release on Thursday also included a solution for an HTTPS-crippling vulnerability, kno

Recently encountered some small problems with SSL, the special record.We have a Java-implemented SSL TCP server that provides SSL access connections for clients (PC, Android, IOS). Recently, users have feedback on their mobile App can not connect to the normal login, other people on the phone. After a separate visit to investigate the user's mobile phone operating system is Android 6.0, after searching for Android 6.0 Google used the home of Boringssl replaced the original OpenSSL, suspected to

How to Prevent 1024-bit Diffie-Hellman from being cracked On Wednesday, Researchers Alex Halderman and Nadia Heninger proposed that NSA has been able to decrypt a large number of HTTPS, SSH, and VPN connections by attacking a 1024-bit prime number Diffie-Hellman Key Exchange algorithm. NSA may have cracked 1024-bit Diffie-Hellman Logjam attacks discovered in the first half of this year allow a hacker using man-in-the-middle attacks to reduce the outpu

How to Prevent 1024-bit Diffie-Hellman from being cracked On Wednesday, Researchers Alex Halderman and Nadia Heninger proposed that NSA has been able to decrypt a large number of HTTPS, SSH, and VPN connections by attacking a 1024-bit prime number Diffie-Hellman Key Exchange algorithm. NSA may have cracked 1024-bit Diffie-Hellman Logjam attacks discovered in the first half of this year allow a hacker using man-in-the-middle attacks to reduce the outp

secure for use with HTTPS SHA-1 hash function--suggest replacing with SHA-2 Any diffie-hellman group--cve-2016-0701 vulnerability Output password-vulnerable to FREAK and LogJam attacks TLS 1.3 currently supports the following cryptographic suites:tls13-aes128-gcm-sha256tls13-aes256-gcm-sha384tls13-chacha20-poly1305-sha256tls13- aes128-ccm-sha256tls13-aes128-ccm-8The new cryptographic suite can only be used in TLS 1.3, and the old sui

many people will ask why the reinforcement, because if you do not reinforce HTTPS will not be accessible in the FF, the error is as follows:Solution reference Tomcat6+jdk6 How to harden, solve logjam attackResolve process Analysis non-reinforcing whether direct access is possibleTested for non-reinforcing condition access no problemCannot access cause analysis after reinforcementBecause the reinforcement is mainly specified protocols and ciphers, so