On Sun, Jan 20, 2013 at 6:50 AM, Vincent Hanquez
Hi cafe,
this is a security advisory for tls-extra < 0.6.1 which are all vulnerable to bad certificate validation.
Some part of the certificate validation procedure were missing (relying on the work-in-progress x509 v3 extensions), and because of this anyone with a correct end-entity certificate can issue certificate for any arbitrary domain, i.e. acting as a CA.
This problem has been fixed in tls-extra 0.6.1, and I advise everyone to upgrade as soon as possible.
Despite a very serious flaw in the certificate validation, I'm happy that the code is seeing some audits, and would want to thanks Ertugrul Söylemez for the findings [1].
Regarding testing, it looks like the Tests directory hasn't been updated to cover this bug. What would really give confidence is a set of tests encoding fixed security vulnerabilities in OpenSSL (and similar libraries). That should also give you a lot of confidence in your library. But anyways, this is fantastic work you're doing. Keep it up! Alexander
-- Vincent
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