libcurl 7.20.0 and earlier versions incompletely reinitialize CURL
handles when options such as CURLOPT_CAINFO are changed. It seems
Curl_clone_ssl_config() doesn't reset some attributes to NULL. As
such, reusing a curl easy handle can cause "double free" and
segmentation fault crashes, along with other random problems (curl
errors 27 and 35).

Two files are attached: a demonstration of the problem, and a patch
to correct it.

 - doug

-------------------------------------------------------------------
List admin: http://cool.haxx.se/list/listinfo/curl-library
Etiquette: http://curl.haxx.se/mail/etiquette.html