Tag Archives: ssl

TLS Interception Thought Of Dangerous – Video And Slides

By | October 9, 2017

On the latest Chaos Communication Camp I held a chat summarizing the issues with TLS interception or Man-in-the-Middle proxies. This was initially motivated by the occurence of Superfish and my very own investigations on Privdog, however I discovered prior to now month that this may be a far greater drawback. I used to be stunned… Read More »

Superfish 2.0: Harmful Certificates on Dell Laptops Breaks Encrypted HTTPS Connections

By | October 5, 2017

tl;dr Dell laptops come preinstalled with a root certificates and a corresponding personal key. That fully compromises the safety of encrypted HTTPS connections. I’ve supplied an online check, affected customers ought to delete the certificate. It appears that Dell hasn’t discovered something from the Superfish-scandal earlier this yr: Laptops from the corporate include a preinstalled… Read More »

A Little POODLE Left in GnuTLS (old Versions)

By | October 5, 2017

tl;dr Older GnuTLS variations (2.x) fail to examine the primary byte of the padding in CBC modes. Numerous secure Linux distributions, together with Ubuntu LTS and Debian wheezy (oldstable) use this model. Present GnuTLS variations usually are not affected. A few days in the past an email on the ssllabs mailing list catched my consideration.… Read More »

The Drawback with OCSP Stapling And Should Staple And Why Certificates Revocation Continues to Be Broken

By | October 5, 2017

Today the OCSP servers from Lets Encrypt have been offline for a while. This has precipitated way more hassle than it ought to have, as a outcome of in principle we’ve got all of the applied sciences out there to deal with such an incident. Nonetheless resulting from failures in how they’re carried out they… Read More »

What Acquired Us Into the SHA1 Deprecation Mess?

By | October 5, 2017

Important notice: After I revealed this textual content Adam Langley pointed out that a main assumption is incorrect: Android 2.2 really has no issues with SHA256-signed certificates. I checked this myself and in an emulated Android 2.2 instance I used to be in a position to join with a website with a SHA256-signed certificates. I… Read More »

How I Tricked Symantec with a Pretend Personal Key

By | October 5, 2017

Lately, some consideration was drawn to a widespread downside with TLS certificates. Many individuals are by accident publishing their personal keys. Typically they’re launched as a half of purposes, in Github repositories or with common filenames on net servers. If a personal key’s compromised, a certificates authority is obliged to revoke it. The Baseline Necessities… Read More »