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2 Commits

Author SHA1 Message Date
Werner Koch
0a63afc79a
dirmngr: Disable the HTTP redirect rewriting.
* dirmngr/http.h (struct http_redir_info_s): Add restrict_redir.
* dirmngr/ks-engine-hkp.c (send_request): Set it depending on flags.
* dirmngr/ks-engine-http.c (ks_http_fetch): Ditto.
* dirmngr/t-http-basic.c (test_http_prepare_redirect): Always set it.
* dirmngr/http.c (http_prepare_redirect): Remove location rewriting
unless the flag is set.
--

GnuPG-bug-id: 6477
2023-06-15 15:06:21 +02:00
Werner Koch
fa1b1eaa42
dirmngr: Avoid possible CSRF attacks via http redirects.
* dirmngr/http.h (parsed_uri_s): Add fields off_host and off_path.
(http_redir_info_t): New.
* dirmngr/http.c (do_parse_uri): Set new fields.
(same_host_p): New.
(http_prepare_redirect): New.
* dirmngr/t-http-basic.c: New test.
* dirmngr/ks-engine-hkp.c (send_request): Use http_prepare_redirect
instead of the open code.
* dirmngr/ks-engine-http.c (ks_http_fetch): Ditto.
--

With this change a http query will not follow a redirect unless the
Location header gives the same host.  If the host is different only
the host and port is taken from the Location header and the original
path and query parts are kept.

Signed-off-by: Werner Koch <wk@gnupg.org>
2018-11-22 22:36:07 +01:00