[asterisk-bugs] [JIRA] (ASTERISK-20854) app_minivm core dump in ast_str_encode_mime

[Chris Warr (JIRA)]

Chris Warr created ASTERISK-20854:
-------------------------------------

             Summary: app_minivm core dump in ast_str_encode_mime
                 Key: ASTERISK-20854
                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-20854
             Project: Asterisk
          Issue Type: Bug
      Security Level: None
          Components: Applications/app_minivm
    Affects Versions: 10.9.0
         Environment: Centos 6.3
            Reporter: Chris Warr


ast_str_encode is called from sendmail if an address contains any characters that need mime-encoding.  In my case the user name was "Laura (Reception)".

It looks like when the ast_str_encode_mime function was converted to use the ast_str structure someone didn't remove a string initialisation.  The bug occurs from *end = '\0' clearing out the structure and later it's set which core dumps.

	struct ast_str *tmp = ast_str_alloca(80);
	int first_section = 1;
	*end = '\0';                  <-- This should be deleted

	ast_str_reset(*end);

...
...

   // Will core dump a functions down through here
   ast_str_append(end, maxlen, "%s%s?=%s", first_section ? "" : " ", ast_str_buffer(tmp), ast_str_strlen(tmp) + postamble > 74 ? " " : "");



This bug is still in the 11 branch, however I am using 10.9.
I've removed this line, recompiled at tested successfully.

Regards,
Chris.


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