It looks (from the pull request) like much of this was reported over a month ago. But you should also err on the side of quickly adding people's names to it when they report things. I bring this up because it's a valuable lesson for startups. I'm also a little confused: if the team put Steve Thomas on their thank-you page, why did Steve Thomas write a blog post linking directly to that page saying he wasn't on it?
Vulnerabilities that devastate the security of Cryptocat earn a blog post. Related Papers 1: Wireshark capture for Cryptocat application involved in a conversation are assured that the messages they receive are authentic and not From. Vulnerabilities in TLS that are far less critical than this one are career-making. But there's a key difference between TLS and Cryptocat: the whole world is working on TLS security. Vulnerabilities are found semi-routinely in TLS, which was designed by several of the smartest crypto people in the world. And that OpenWhisper dont have a usable iOS client. You should also mention that Moxie worked for OpenWhisper. It has a very controversial history, and lots of well known security professionals think its actually dangerous. When was the last cryptographic vulnerability discovered in any mainstream implementation of PGP? Using Cryptocat as an security exemplar is actually quite dangerous. I feel bad for the team that worked on this (although I stand by my belief that they shouldn't be working on it), but this is an extremely aggravating statement. Kobeissi said Cryptocat saw 65,000 new users in just a month since the revelations were published.Cryptocat is not any different from any of the other notable privacy, encryption and security projects, in which vulnerabilities get pointed out on a regular basis and are fixed. National Security Agency's surveillance program was detailed by whistleblower Edward Snowden. "I wanted to be on the record that he was paid for his effort," Kobeissi said.Ĭryptocat has seen surging interest since the U.S. Kobeissi said he gave Thomas a US$250 reward out of his own pocket even though Cryptocat has no formal bug bounty program. The bug was completely unacceptable, but it is common for errors to be revealed in open-source projects, he said. "I am not a person who will gloss over this kind of bug for absolutely no reason just to maintain the image of the project." "This is a really difficult situation," Kobeissi said.
CRYPTOCAT CSECURITY PATCH
The vulnerability persisted for about seven months between September 2012 and April.Īlthough Cryptocat noted the patch in its changelog, Kobeissi wrote a detailed blog post on Thursday explaining the issue after Thomas published a sharp critique. So 254.15 turns into 227.3 to 253.15.or Cryptocat versions before 2.0.42, doing a split of 2109 and 107 it. The bug was fixed in Cryptocat versions 2.0 and up about a month ago after Thomas notified the project.
But if an attacker broke the SSL encryption and had the underlying encrypted chats, "it would be significantly easier to crack" using brute-force techniques, he said. The encrypted conversations were still carried over SSL (Secure Sockets Layers), another overlay of encryption. The error was the result of an oversight spotted by Thomas, Kobeissi said.
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