The need to retire SHA-1 faces obstacles with the access needs of users who have yet to upgrade. Facebook, Twitter, and CloudFlare have proposed an interim solution for users of these legacy devices.
InfoQ recently sat down with Marko Vuksanovic and Sam Gibson from ThoughtWorks, and asked about their recent study of TLS/HTTPS and HTTP/2 that was published in the ThoughtWorks P2 magazine. Both Vuksanovic and Gibson shared their expertise on a range of security-focused topics, including ubiquitous computing, the workings of TLS/HTTPS, certificate trust, and the security implications of HTTP/2.
Symantec’s Thawte unit admits that flawed internal practices allowed multiple Google SSL certificates to be released in an unauthorized manner.
Amazon Web Services has recently introduced s2n, short for “signal to noise”, an open-source implementation of the TLS/SSL protocols that aims to be “simple, small, fast, and with security as a priority”.
Google have announced that they will remove support for the obsolete SSL 3.0 after discovering vulnerabilities that may be exploitable by forcing clients or servers to downgrade. Removing SSL 3.0 may also unlock stalled negotiations with HTTP2. Read on for more details.
CloudFlare have made SSL available to all free subscribers to its content delivery network (CDN) with Universal SSL. The move addresses both cost and complexity issues that have previously confronted web site and application owners wanting to deploy SSL. CloudFlare takes care of issuing a certificate at no cost to the end user, and enabling SSL becomes a selection from a dropdown menu.
GitHub, BitBucket, Twitter and other Secure Services Affected on Mac OS X By Expired SSL Certificate
On Saturday July 26th, an intermediate certificate issued by DigiCert that was used by online services like GitHub, BitBucket, etc expired. Since this certificate was widely cached in the keychains of many Mac OS X users, this expiration caused any connection via browser or API to raise certificate chain errors.
Google announced last week that Android 4.1.1 is susceptible to the Heartbleed OpenSSL bug. While Android 4.1.1 is, according to Google, the only Android version vulnerable to Heartbleed, it remains in use in millions of smartphones and tablets. Android 4.1.1 devices have been shown to leak significant amount of data in a "reverse Heartbleed" attack.
Following recommendations by the US National Institute of Standards and Technology, Microsoft intends to stop honoring SHA1 for SSL and Code Signing certificates. This policy will begin in 2017 and applies to Windows Vista, Windows Server 2008, and later operating systems.
A recent publication in the ACM CCS'12 proceedings titled "The Most Dangerous Code in the World:Validating SSL Certificates in Non-Browser Software" exposes critical vulnerabilities in the creation and usage of SSL libraries in non-browser applications. The lessons learnt and the ensuing recommendations to developers and testers are shared in this news item.
Lori MacVittie from F5 Networks provided an analysis of the recent adoption of NIST SSL Deployment Guidelines by the US Government as of January 2011. Since all commercial certificate authorities now issue only 2048-bit keys, the capacity of a server to process SSL is severely impacted and invalidates the general belief that SSL is not computationally expensive.
An implementation of the MD5 cryptographic hashing algorithm for Silverlight has been posted on MSDN by Reid Borsuk. Delay, another MSDN user, has recently posted ComputeFileHashes, a small .NET command-line application that also works on WPF and Silverlight and is helpful to compute MD5, SHA-1, and CRC-32 hashes.
SSL-based security using X509 certificates from certain CA's opens a vulnerability to sites masquerading under a forged X509 certificate, even in a "secure" connection. This was demonstrated recently at the Chaos Conference in Berlin by spoofing a real certificate.
JRuby 1.0.3 is out now. Although a point release, the update is significant because it addresses compatibility issues with Rails 2.0 and other libraries and tools. Meanwhile, some JRuby 1.1 performance improvements get noticed.