Land #3758, nil deref fix for iax2/call.rb

2014-09-06 16:08:32 -05:00 · 2014-09-06 16:08:32 -05:00 · 422d6bd2e4
parent 7d942be715 af24e30ae9
commit 422d6bd2e4
1 changed files with 5 additions and 0 deletions
--- a/lib/rex/proto/iax2/call.rb
+++ b/lib/rex/proto/iax2/call.rb
@ -77,6 +77,11 @@ class Call
      chall = res[2][IAX_IE_CHALLENGE_DATA]
    end

+    if chall.nil?
+      dprint("REGAUTH: No challenge data received")
+      return
+    end
+
    self.client.send_regreq_chall_response(self, chall)
    res = wait_for( IAX_SUBTYPE_REGACK, IAX_SUBTYPE_REGREJ )
    return if not res