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2019-03-14Negotiate: fix for HTTP POST with NegotiateDominik Hölzl
* Adjusted unit tests 2056, 2057 * do not generally close connections with CURLAUTH_NEGOTIATE after every request * moved negotiatedata from UrlState to connectdata * Added stream rewind logic for CURLAUTH_NEGOTIATE * introduced negotiatedata::GSS_AUTHDONE and negotiatedata::GSS_AUTHSUCC * Consider authproblem state for CURLAUTH_NEGOTIATE * Consider reuse_forbid for CURLAUTH_NEGOTIATE * moved and adjusted negotiate authentication state handling from output_auth_headers into Curl_output_negotiate * Curl_output_negotiate: ensure auth done is always set * Curl_output_negotiate: Set auth done also if result code is GSS_S_CONTINUE_NEEDED/SEC_I_CONTINUE_NEEDED as this result code may also indicate the last challenge request (only works with disabled Expect: 100-continue and CURLOPT_KEEP_SENDING_ON_ERROR -> 1) * Consider "Persistent-Auth" header, detect if not present; Reset/Cleanup negotiate after authentication if no persistent authentication * apply changes introduced with #2546 for negotiate rewind logic Fixes #1261 Closes #1975
2019-02-26strerror: make the strerror function use local buffersDaniel Stenberg
Instead of using a fixed 256 byte buffer in the connectdata struct. In my build, this reduces the size of the connectdata struct by 11.8%, from 2160 to 1904 bytes with no functionality or performance loss. This also fixes a bug in schannel's Curl_verify_certificate where it called Curl_sspi_strerror when it should have called Curl_strerror for string from GetLastError. the only effect would have been no text or the wrong text being shown for the error. Co-authored-by: Jay Satiro Closes #3612
2019-02-04ntlm: fix *_type3_message size check to avoid buffer overflowDaniel Stenberg
Bug: https://curl.haxx.se/docs/CVE-2019-3822.html Reported-by: Wenxiang Qian CVE-2019-3822
2019-02-04NTLM: fix size check condition for type2 received dataDaniel Stenberg
Bug: https://curl.haxx.se/docs/CVE-2018-16890.html Reported-by: Wenxiang Qian CVE-2018-16890
2019-02-01spnego_sspi: add support for channel bindinggeorgeok
Attempt to add support for Secure Channel binding when negotiate authentication is used. The problem to solve is that by default IIS accepts channel binding and curl doesn't utilise them. The result was a 401 response. Scope affects only the Schannel(winssl)-SSPI combination. Fixes https://github.com/curl/curl/issues/3503 Closes https://github.com/curl/curl/pull/3509
2019-01-19ntlm_sspi: add support for channel bindinggeorgeok
Windows extended potection (aka ssl channel binding) is required to login to ntlm IIS endpoint, otherwise the server returns 401 responses. Fixes #3280 Closes #3321
2019-01-11urldata: rename easy_conn to just connDaniel Stenberg
We use "conn" everywhere to be a pointer to the connection. Introduces two functions that "attaches" and "detaches" the connection to and from the transfer. Going forward, we should favour using "data->conn" (since a transfer always only has a single connection or none at all) to "conn->data" (since a connection can have none, one or many transfers associated with it and updating conn->data to be correct is error prone and a frequent reason for internal issues). Closes #3442
2019-01-01ntlm: update selection of type 3 responseMarkus Moeller
NTLM2 did not work i.e. no NTLMv2 response was created. Changing the check seems to work. Ref: https://winprotocoldoc.blob.core.windows.net/productionwindowsarchives/MS-NLMP/[MS-NLMP].pdf Fixes https://github.com/curl/curl/issues/3286 Closes https://github.com/curl/curl/pull/3287 Closes https://github.com/curl/curl/pull/3415
2018-11-23snprintf: renamed and we now only use msnprintf()Daniel Stenberg
The function does not return the same value as snprintf() normally does, so readers may be mislead into thinking the code works differently than it actually does. A different function name makes this easier to detect. Reported-by: Tomas Hoger Assisted-by: Daniel Gustafsson Fixes #3296 Closes #3297
2018-10-29Curl_auth_create_plain_message: fix too-large-input-checkDaniel Stenberg
CVE-2018-16839 Reported-by: Harry Sintonen Bug: https://curl.haxx.se/docs/CVE-2018-16839.html
2018-10-03memory: ensure to check allocation resultsDaniel Gustafsson
The result of a memory allocation should always be checked, as we may run under memory pressure where even a small allocation can fail. This adds checking and error handling to a few cases where the allocation wasn't checked for success. In the ftp case, the freeing of the path variable is moved ahead of the allocation since there is little point in keeping it around across the strdup, and the separation makes for more readable code. In nwlib, the lock is aslo freed in the error path. Also bumps the copyright years on affected files. Closes #3084 Reviewed-by: Jay Satiro <raysatiro@yahoo.com> Reviewed-by: Daniel Stenberg <daniel@haxx.se>
2018-10-03comment: Fix multiple typos in function parametersDaniel Gustafsson
Ensure that the parameters in the comment match the actual names in the prototype. Closes #3079 Reviewed-by: Daniel Stenberg <daniel@haxx.se>
2018-06-11cppcheck: fix warningsMarian Klymov
- Get rid of variable that was generating false positive warning (unitialized) - Fix issues in tests - Reduce scope of several variables all over etc Closes #2631
2018-05-14ntlm: Fix format specifiersRikard Falkeborn
2018-04-16ntlm_sspi: fix authentication using Credential Managertoughengineer
If you pass empty user/pass asking curl to use Windows Credential Storage (as stated in the docs) and it has valid credentials for the domain, e.g. curl -v -u : --ntlm example.com currently authentication fails. This change fixes it by providing proper SPN string to the SSPI API calls. Fixes https://github.com/curl/curl/issues/1622 Closes https://github.com/curl/curl/pull/1660
2018-04-15vauth: Fix typoDaniel Gustafsson
Address various spellings of "credentials". Closes https://github.com/curl/curl/pull/2496
2018-04-15all: Refactor malloc+memset to use callocDaniel Gustafsson
When a zeroed out allocation is required, use calloc() rather than malloc() followed by an explicit memset(). The result will be the same, but using calloc() everywhere increases consistency in the codebase and avoids the risk of subtle bugs when code is injected between malloc and memset by accident. Closes https://github.com/curl/curl/pull/2497
2018-03-20vauth/cleartext: fix integer overflow checkDaniel Stenberg
Make the integer overflow check not rely on the undefined behavior that a size_t wraps around on overflow. Detected by lgtm.com Closes #2408
2018-03-20vauth/ntlm.h: fix the #ifdef header guardDaniel Stenberg
Detected by lgtm.com
2017-11-21ntlm: remove unnecessary NULL-check to please scan-buildDaniel Stenberg
2017-10-28auth: add support for RFC7616 - HTTP Digest access authenticationFlorin
Signed-off-by: Florin <petriuc.florin@gmail.com>
2017-09-23ntlm: move NTLM_NEEDS_NSS_INIT define into core NTLM headerJay Satiro
.. and include the core NTLM header in all NTLM-related source files. Follow up to 6f86022. Since then http_ntlm checks NTLM_NEEDS_NSS_INIT but did not include vtls.h where it was defined. Closes https://github.com/curl/curl/pull/1911
2017-09-22ntlm: use strict order for SSL backend #if branchesViktor Szakats
With the recently introduced MultiSSL support multiple SSL backends can be compiled into cURL That means that now the order of the SSL One option would be to use the same SSL backend as was configured via `curl_global_sslset()`, however, NTLMv2 support would appear to be available only with some SSL backends. For example, when eb88d778e (ntlm: Use Windows Crypt API, 2014-12-02) introduced support for NTLMv1 using Windows' Crypt API, it specifically did *not* introduce NTLMv2 support using Crypt API at the same time. So let's select one specific SSL backend for NTLM support when compiled with multiple SSL backends, using a priority order such that we support NTLMv2 even if only one compiled-in SSL backend can be used for that. Ref: https://github.com/curl/curl/pull/1848
2017-09-06vtls: select ssl backend case-insensitive (follow-up)Gisle Vanem
- Do a case-insensitive comparison of CURL_SSL_BACKEND env as well. - Change Curl_strcasecompare calls to strcasecompare (maps to the former but shorter). Follow-up to c290b8f. Bug: https://github.com/curl/curl/commit/c290b8f#commitcomment-24094313 Co-authored-by: Jay Satiro
2017-09-02Curl_base64_encode: always call with a real data handle.Patrick Monnerat
Some calls in different modules were setting the data handle to NULL, causing segmentation faults when using builds that enable character code conversions.
2017-08-10digest_sspi: Don't reuse context if the user/passwd has changedJay Satiro
Bug: https://github.com/curl/curl/issues/1685 Reported-by: paulharris@users.noreply.github.com Assisted-by: Isaac Boukris Closes https://github.com/curl/curl/pull/1742
2017-08-05gssapi: fix memory leak of output token in multi round contextIsaac Boukris
When multiple rounds are needed to establish a security context (usually ntlm), we overwrite old token with a new one without free. Found by proposed gss tests using stub a gss implementation (by valgrind error), though I have confirmed the leak with a real gssapi implementation as well. Closes https://github.com/curl/curl/pull/1733
2017-05-08rand: treat fake entropy the same regardless of endiannessJay Satiro
When the random seed is purposely made predictable for testing purposes by using the CURL_ENTROPY environment variable, process that data in an endian agnostic way so the the initial random seed is the same regardless of endianness. - Change Curl_rand to write to a char array instead of int array. - Add Curl_rand_hex to write random hex characters to a buffer. Fixes #1315 Closes #1468 Co-authored-by: Daniel Stenberg Reported-by: Michael Kaufmann
2017-04-22lib: fix maybe-uninitialized warningsMarcel Raad
With -Og, GCC complains: easy.c:628:7: error: ‘mcode’ may be used uninitialized in this function [-Werror=maybe-uninitialized] ../lib/strcase.h:35:29: error: ‘tok_buf’ may be used uninitialized in this function [-Werror=maybe-uninitialized] vauth/digest.c:208:9: note: ‘tok_buf’ was declared here ../lib/strcase.h:35:29: error: ‘tok_buf’ may be used uninitialized in this function [-Werror=maybe-uninitialized] vauth/digest.c:566:15: note: ‘tok_buf’ was declared here Fix this by initializing the variables.
2017-04-07sspi: print out InitializeSecurityContext() error messageIsaac Boukris
Reported-by: Carsten (talksinmath) Fixes #1384 Closes #1395
2017-03-29NTLM: check for features with #ifdef instead of #ifMarcel Raad
Feature defines are normally checked with #ifdef instead of #if in the rest of the codebase. Additionally, some compilers warn when a macro is implicitly evaluated to 0 because it is not defined, which was the case here. Ref: https://github.com/curl/curl/pull/1362#discussion_r108605101 Closes https://github.com/curl/curl/pull/1367
2017-03-26spelling fixesklemens
Closes #1356
2017-02-27digest_sspi: fix compilation warningMarcel Raad
MSVC complains: warning C4701: potentially uninitialized local variable 'output_token_len' used
2017-02-21digest_sspi: Handle 'stale=TRUE' directive in HTTP digestJay Satiro
- If the server has provided another challenge use it as the replacement input token if stale=TRUE. Otherwise previous credentials have failed so return CURLE_LOGIN_DENIED. Prior to this change the stale directive was ignored and if another challenge was received it would cause error CURLE_BAD_CONTENT_ENCODING. Ref: https://tools.ietf.org/html/rfc2617#page-10 Bug: https://github.com/curl/curl/issues/928 Reported-by: tarek112@users.noreply.github.com
2017-02-20digest_sspi: Fix nonce-count generation in HTTP digestMax Khon
- on the first invocation: keep security context returned by InitializeSecurityContext() - on subsequent invocations: use MakeSignature() instead of InitializeSecurityContext() to generate HTTP digest response Bug: https://github.com/curl/curl/issues/870 Reported-by: Andreas Roth Closes https://github.com/curl/curl/pull/1251
2017-02-06use *.sourceforge.io and misc URL updatesViktor Szakats
Ref: https://sourceforge.net/blog/introducing-https-for-project-websites/ Closes: https://github.com/curl/curl/pull/1247
2016-12-29digest_sspi: copy terminating NUL as wellMax Khon
Curl_auth_decode_digest_http_message(): copy terminating NUL as later Curl_override_sspi_http_realm() expects a NUL-terminated string. Fixes #1180
2016-11-24checksrc: white space edits to comply to stricter checksrcDaniel Stenberg
2016-11-24Limit ASN.1 structure sizes to 256K. Prevent some allocation size overflows.Patrick Monnerat
See CRL-01-006.
2016-11-14Curl_rand: fixed and moved to rand.cDaniel Stenberg
Now Curl_rand() is made to fail if it cannot get the necessary random level. Changed the proto of Curl_rand() slightly to provide a number of ints at once. Moved out from vtls, since it isn't a TLS function and vtls provides Curl_ssl_random() for this to use. Discussion: https://curl.haxx.se/mail/lib-2016-11/0119.html
2016-10-31digest_sspi: fix includeMarcel Raad
Fix compile break from 811a693b80
2016-10-31strcasecompare: all case insensitive string compares ignore locale nowDaniel Stenberg
We had some confusions on when each function was used. We should not act differently on different locales anyway.
2016-10-31strcasecompare: is the new name for strequal()Daniel Stenberg
... to make it less likely that we forget that the function actually does case insentive compares. Also replaced several invokes of the function with a plain strcmp when case sensitivity is not an issue (like comparing with "-").
2016-08-21sasl: Don't use GSSAPI authentication when domain name not specifiedSteve Holme
Only choose the GSSAPI authentication mechanism when the user name contains a Windows domain name or the user is a valid UPN. Fixes #718
2016-08-21vauth: Added check for supported SSPI based authentication mechanismsSteve Holme
Completing commit 00417fd66c and 2708d4259b.
2016-08-19spnego_sspi: fix memory leak in case *outlen is zero (#970)Miroslav Franc
2016-08-18vauth: Introduced Curl_auth_is_<mechansism>_supported() functionsSteve Holme
As Windows SSPI authentication calls fail when a particular mechanism isn't available, introduced these functions for DIGEST, NTLM, Kerberos 5 and Negotiate to allow both HTTP and SASL authentication the opportunity to query support for a supported mechanism before selecting it. For now each function returns TRUE to maintain compatability with the existing code when called.
2016-07-23vauth.h: No need to query HAVE_GSSAPI || USE_WINDOWS_SSPI for SPNEGOSteve Holme
As SPNEGO is only defined when these pre-processor variables are defined there is no need to query them explicitly.
2016-07-23spnego: Corrected miss-placed * in Curl_auth_spnego_cleanup() declarationSteve Holme
Typo introduced in commit ad5e9bfd5d.
2016-07-20vauth: Fix memleak by freeing credentials if out of memoryJay Satiro
This is a follow up to the parent commit dcdd4be which fixes one leak but creates another by failing to free the credentials handle if out of memory. Also there's a second location a few lines down where we fail to do same. This commit fixes both of those issues.
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