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[curl:bugs] #1363 Negotiate with SSPI not working

From: Daniel Stenberg <bagder_at_users.sf.net>
Date: Wed, 23 Jul 2014 10:11:08 +0000

- **status**: open --> pending-needsinfo
- **assigned_to**: Daniel Stenberg
- **Comment**:

Please retry with the latest git version as we've gotten lots of negotiate and spnego fixes merged lately!

---
** [bugs:#1363] Negotiate with SSPI not working**
**Status:** pending-needsinfo
**Created:** Wed Apr 23, 2014 10:45 AM UTC by Marcel Raad
**Last Updated:** Fri Jul 11, 2014 01:01 PM UTC
**Owner:** Daniel Stenberg
I'm using libcurl 7.35.0 built with SSPI (the relevant code has not changed in the current git version). I'm trying to authenticate to a Microsoft Threat Management Gateway 2010 SP2 proxy server via Negotiate. This fails and I see the following sequence of events in http_negotiate_sspi.c:
1. Curl_input_negotiate is called and creates a new credential handle and context handle (line 160f), but doesn't pass them to InitializeSecurityContext as the input token is not set (line 211).
2. Curl_output_negotiate is called, which frees the context and credential handles in Curl_cleanup_negotiate.
3. Curl_input_negotiate is called again, this time creating an input token (line 176). The call to InitializeSecurityContext fails with SEC_E_INVALID_HANDLE as neg_ctx->credentials and neg_ctx->context are NULL.
If I skip the call to Curl_cleanup_negotiate in Curl_output_negotiate (line 271), the authentication is successful.
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Received on 2014-07-23

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