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clear session cache if a client cert from file is used

This commit is contained in:
Kamil Dudka 2013-01-15 13:49:48 +01:00
parent a5f3441ddf
commit 513526c871
2 changed files with 60 additions and 0 deletions
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55
0002-curl-7.28.1-b36f1d26.patch Normal file
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@ -0,0 +1,55 @@
From fefd7cdcde39c56651f6e2c32be9cd79354ffdc4 Mon Sep 17 00:00:00 2001
From: Kamil Dudka <kdudka@redhat.com>
Date: Fri, 11 Jan 2013 10:24:21 +0100
Subject: [PATCH 2/3] nss: clear session cache if a client cert from file is used
This commit fixes a regression introduced in 052a08ff.
NSS caches certs/keys returned by the SSL_GetClientAuthDataHook callback
and if we connect second time to the same server, the cached cert/key
pair is used. If we use multiple client certificates for different
paths on the same server, we need to clear the session cache to force
NSS to call the hook again. The commit 052a08ff prevented the session
cache from being cleared if a client certificate from file was used.
The condition is now fixed to cover both cases: consssl->client_nickname
is not NULL if a client certificate from the NSS database is used and
connssl->obj_clicert is not NULL if a client certificate from file is
used.
Review by: Kai Engert
[upstream commit b36f1d26f830453ebaa17238f9bd1e396f618720]
---
lib/nss.c | 12 ++++++++----
1 files changed, 8 insertions(+), 4 deletions(-)
diff --git a/lib/nss.c b/lib/nss.c
index 794eccb..f97090a 100644
--- a/lib/nss.c
+++ b/lib/nss.c
@@ -1058,13 +1058,17 @@ void Curl_nss_close(struct connectdata *conn, int sockindex)
as closed to avoid double close */
fake_sclose(conn->sock[sockindex]);
conn->sock[sockindex] = CURL_SOCKET_BAD;
+
+ if((connssl->client_nickname != NULL) || (connssl->obj_clicert != NULL))
+ /* A server might require different authentication based on the
+ * particular path being requested by the client. To support this
+ * scenario, we must ensure that a connection will never reuse the
+ * authentication data from a previous connection. */
+ SSL_InvalidateSession(connssl->handle);
+
if(connssl->client_nickname != NULL) {
free(connssl->client_nickname);
connssl->client_nickname = NULL;
-
- /* force NSS to ask again for a client cert when connecting
- * next time to the same server */
- SSL_InvalidateSession(connssl->handle);
}
/* destroy all NSS objects in order to avoid failure of NSS shutdown */
Curl_llist_destroy(connssl->obj_list, NULL);
--
1.7.1

5
curl.spec
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@ -11,6 +11,9 @@ Source3: hide_selinux.c
# prevent NSS from crashing on client auth hook failure
Patch1: 0001-curl-7.28.1-68d2830e.patch
# clear session cache if a client cert from file is used
Patch2: 0002-curl-7.28.1-b36f1d26.patch
# patch making libcurl multilib ready
Patch101: 0101-curl-7.27.0-multilib.patch
@ -105,6 +108,7 @@ documentation of the library, too.
# upstream patches
%patch1 -p1
%patch2 -p1
# Fedora patches
%patch101 -p1
@ -230,6 +234,7 @@ rm -rf $RPM_BUILD_ROOT
%changelog
* Tue Jan 15 2013 Kamil Dudka <kdudka@redhat.com> 7.28.1-2
- prevent NSS from crashing on client auth hook failure
- clear session cache if a client cert from file is used
* Tue Nov 20 2012 Kamil Dudka <kdudka@redhat.com> 7.28.1-1
- new upstream release