oss-sec mailing list archives

Re: Re: cryptocat/decryptocat - needs a cve?


From: Kurt Seifried <kseifried () redhat com>
Date: Tue, 09 Jul 2013 21:44:25 -0600

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On 07/09/2013 09:59 AM, Nadim Kobeissi wrote:
No CVE has been assigned yet. Any assistance with this is welcome!

NK

Ok sorry for the delay, I have some questions. Can you provide links
to the code commits fixing these issues/give some details on them?
Also I assume the Cryptocat 2.1 release fixes the decryptocat issue
correct?

==============

https://github.com/cryptocat/cryptocat/blob/master/CHANGELOG.md

Cryptocat 2.1
Jun. 7 2013
Security enhancements and bug fixes. Updating is recommended.

Cryptocat 2.0.42
Apr. 19 2013
Fixed a bug found in the encryption libraries that could partially
weaken the security of multiparty Cryptocat messages.

Cryptocat 2.0.22
Nov. 7 2012
This version pushes many important security fixes, detailed here on
the Cryptocat Development Blog:
https://blog.crypto.cat/2012/11/security-update-our-first-full-audit/

Cryptocat 2.0.19
Nov. 1 2012
Minor security fixes.

==============

Second set of questions:

Then in http://tobtu.com/decryptocat.php

A number of other issues are mentioned, but I can't easily match them
up to the changelog:

Date introduced Days in Git     Difficulty rating
Jul 9, 2011     58      Passwords so probably broken
Sep 5, 2011     6       *** Medium
Sep 11, 2011    36      **** Hard
Oct 15, 2011    2       ***** "Impossible"
Oct 17, 2011    12      *** Medium
Oct 29, 2011    191     ** Easy
May 7, 2012     347     * Encraption
Apr 19, 2013    45      *** Medium
Jun 3, 2013     30+     ***** "Impossible"

Can you provide links to the commits for these issues?

It looks like we need between 4 and 10+ CVEs in total.

- -- 
Kurt Seifried Red Hat Security Response Team (SRT)
PGP: 0x5E267993 A90B F995 7350 148F 66BF 7554 160D 4553 5E26 7993
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