Re: [tor-dev] Quick logjam/Tor analysis.

On Wed, 3 Jun 2015 00:43:50 +1000 teor teor2345@gmail.com wrote:

(Mac) OS X Yosemite 10.10 and earlier ship with OpenSSL 0.9.8 and 0.9.7.

[snip]

While it's possible to build or install OpenSSL 1.0 or 1.1 on OS X, it's not the default.

How does this affect Tor and/or Tor Browser on OS X?

Tor Browser builds/includes it's own copy of OpenSSL, so there is no impact there.

As of a little while ago on master, tor requires OpenSSL 1.0.0 with ECDH support at build time. AFAIK this breaks the build with OSX, FreeBSD 9.x, and certain (Old) versions of Centos/RHEL when compiling against the vendor's OpenSSL. The only resolution is "Too bad, so sad, install a modern OpenSSL".

See #16034 and #16040 for details.