1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
|
From 076a2f629119222aeeb50f5a03bf9f9052fabb9a Mon Sep 17 00:00:00 2001
From: Daniel Stenberg <daniel@haxx.se>
Date: Tue, 27 Dec 2022 11:50:20 +0100
Subject: [PATCH] share: add sharing of HSTS cache among handles
Closes #10138
CVE: CVE-2023-23914 CVE-2023-23915
Upstream-Status: Backport [https://github.com/curl/curl/commit/076a2f629119222aeeb50f5a03bf9f9052fabb9a]
Comment: Refreshed hunk from hsts.c and urldata.h
Signed-off-by: Pawan Badganchi <Pawan.Badganchi@kpit.com>
Signed-off-by: Mingli Yu <mingli.yu@windriver.com>
---
include/curl/curl.h | 1 +
lib/hsts.c | 15 +++++++++
lib/hsts.h | 2 ++
lib/setopt.c | 48 ++++++++++++++++++++++++-----
lib/share.c | 32 +++++++++++++++++--
lib/share.h | 6 +++-
lib/transfer.c | 3 ++
lib/url.c | 6 +++-
lib/urldata.h | 2 ++
9 files changed, 109 insertions(+), 11 deletions(-)
--- a/include/curl/curl.h
+++ b/include/curl/curl.h
@@ -2953,6 +2953,7 @@ typedef enum {
CURL_LOCK_DATA_SSL_SESSION,
CURL_LOCK_DATA_CONNECT,
CURL_LOCK_DATA_PSL,
+ CURL_LOCK_DATA_HSTS,
CURL_LOCK_DATA_LAST
} curl_lock_data;
--- a/lib/hsts.c
+++ b/lib/hsts.c
@@ -37,6 +37,7 @@
#include "parsedate.h"
#include "rand.h"
#include "rename.h"
+#include "share.h"
#include "strtoofft.h"
/* The last 3 #include files should be in this order */
@@ -561,4 +562,18 @@
return CURLE_OK;
}
+void Curl_hsts_loadfiles(struct Curl_easy *data)
+{
+ struct curl_slist *l = data->set.hstslist;
+ if(l) {
+ Curl_share_lock(data, CURL_LOCK_DATA_HSTS, CURL_LOCK_ACCESS_SINGLE);
+
+ while(l) {
+ (void)Curl_hsts_loadfile(data, data->hsts, l->data);
+ l = l->next;
+ }
+ Curl_share_unlock(data, CURL_LOCK_DATA_HSTS);
+ }
+}
+
#endif /* CURL_DISABLE_HTTP || CURL_DISABLE_HSTS */
--- a/lib/hsts.h
+++ b/lib/hsts.h
@@ -59,9 +59,11 @@ CURLcode Curl_hsts_loadfile(struct Curl_
struct hsts *h, const char *file);
CURLcode Curl_hsts_loadcb(struct Curl_easy *data,
struct hsts *h);
+void Curl_hsts_loadfiles(struct Curl_easy *data);
#else
#define Curl_hsts_cleanup(x)
#define Curl_hsts_loadcb(x,y) CURLE_OK
#define Curl_hsts_save(x,y,z)
+#define Curl_hsts_loadfiles(x)
#endif /* CURL_DISABLE_HTTP || CURL_DISABLE_HSTS */
#endif /* HEADER_CURL_HSTS_H */
--- a/lib/setopt.c
+++ b/lib/setopt.c
@@ -2260,9 +2260,14 @@ CURLcode Curl_vsetopt(struct Curl_easy *
data->cookies = NULL;
#endif
+#ifndef CURL_DISABLE_HSTS
+ if(data->share->hsts == data->hsts)
+ data->hsts = NULL;
+#endif
+#ifdef USE_SSL
if(data->share->sslsession == data->state.session)
data->state.session = NULL;
-
+#endif
#ifdef USE_LIBPSL
if(data->psl == &data->share->psl)
data->psl = data->multi? &data->multi->psl: NULL;
@@ -2296,10 +2301,19 @@ CURLcode Curl_vsetopt(struct Curl_easy *
data->cookies = data->share->cookies;
}
#endif /* CURL_DISABLE_HTTP */
+#ifndef CURL_DISABLE_HSTS
+ if(data->share->hsts) {
+ /* first free the private one if any */
+ Curl_hsts_cleanup(&data->hsts);
+ data->hsts = data->share->hsts;
+ }
+#endif /* CURL_DISABLE_HTTP */
+#ifdef USE_SSL
if(data->share->sslsession) {
data->set.general_ssl.max_ssl_sessions = data->share->max_ssl_sessions;
data->state.session = data->share->sslsession;
}
+#endif
#ifdef USE_LIBPSL
if(data->share->specifier & (1 << CURL_LOCK_DATA_PSL))
data->psl = &data->share->psl;
@@ -3049,19 +3063,39 @@ CURLcode Curl_vsetopt(struct Curl_easy *
case CURLOPT_HSTSWRITEDATA:
data->set.hsts_write_userp = va_arg(param, void *);
break;
- case CURLOPT_HSTS:
+ case CURLOPT_HSTS: {
+ struct curl_slist *h;
if(!data->hsts) {
data->hsts = Curl_hsts_init();
if(!data->hsts)
return CURLE_OUT_OF_MEMORY;
}
argptr = va_arg(param, char *);
- result = Curl_setstropt(&data->set.str[STRING_HSTS], argptr);
- if(result)
- return result;
- if(argptr)
- (void)Curl_hsts_loadfile(data, data->hsts, argptr);
+ if(argptr) {
+ result = Curl_setstropt(&data->set.str[STRING_HSTS], argptr);
+ if(result)
+ return result;
+ /* this needs to build a list of file names to read from, so that it can
+ read them later, as we might get a shared HSTS handle to load them
+ into */
+ h = curl_slist_append(data->set.hstslist, argptr);
+ if(!h) {
+ curl_slist_free_all(data->set.hstslist);
+ data->set.hstslist = NULL;
+ return CURLE_OUT_OF_MEMORY;
+ }
+ data->set.hstslist = h; /* store the list for later use */
+ }
+ else {
+ /* clear the list of HSTS files */
+ curl_slist_free_all(data->set.hstslist);
+ data->set.hstslist = NULL;
+ if(!data->share || !data->share->hsts)
+ /* throw away the HSTS cache unless shared */
+ Curl_hsts_cleanup(&data->hsts);
+ }
break;
+ }
case CURLOPT_HSTS_CTRL:
arg = va_arg(param, long);
if(arg & CURLHSTS_ENABLE) {
--- a/lib/share.c
+++ b/lib/share.c
@@ -29,9 +29,11 @@
#include "share.h"
#include "psl.h"
#include "vtls/vtls.h"
-#include "curl_memory.h"
+#include "hsts.h"
-/* The last #include file should be: */
+/* The last 3 #include files should be in this order */
+#include "curl_printf.h"
+#include "curl_memory.h"
#include "memdebug.h"
struct Curl_share *
@@ -89,6 +91,18 @@ curl_share_setopt(struct Curl_share *sha
#endif
break;
+ case CURL_LOCK_DATA_HSTS:
+#ifndef CURL_DISABLE_HSTS
+ if(!share->hsts) {
+ share->hsts = Curl_hsts_init();
+ if(!share->hsts)
+ res = CURLSHE_NOMEM;
+ }
+#else /* CURL_DISABLE_HSTS */
+ res = CURLSHE_NOT_BUILT_IN;
+#endif
+ break;
+
case CURL_LOCK_DATA_SSL_SESSION:
#ifdef USE_SSL
if(!share->sslsession) {
@@ -141,6 +155,16 @@ curl_share_setopt(struct Curl_share *sha
#endif
break;
+ case CURL_LOCK_DATA_HSTS:
+#ifndef CURL_DISABLE_HSTS
+ if(share->hsts) {
+ Curl_hsts_cleanup(&share->hsts);
+ }
+#else /* CURL_DISABLE_HSTS */
+ res = CURLSHE_NOT_BUILT_IN;
+#endif
+ break;
+
case CURL_LOCK_DATA_SSL_SESSION:
#ifdef USE_SSL
Curl_safefree(share->sslsession);
@@ -207,6 +231,10 @@ curl_share_cleanup(struct Curl_share *sh
Curl_cookie_cleanup(share->cookies);
#endif
+#ifndef CURL_DISABLE_HSTS
+ Curl_hsts_cleanup(&share->hsts);
+#endif
+
#ifdef USE_SSL
if(share->sslsession) {
size_t i;
--- a/lib/share.h
+++ b/lib/share.h
@@ -59,10 +59,14 @@ struct Curl_share {
#ifdef USE_LIBPSL
struct PslCache psl;
#endif
-
+#ifndef CURL_DISABLE_HSTS
+ struct hsts *hsts;
+#endif
+#ifdef USE_SSL
struct Curl_ssl_session *sslsession;
size_t max_ssl_sessions;
long sessionage;
+#endif
};
CURLSHcode Curl_share_lock(struct Curl_easy *, curl_lock_data,
--- a/lib/transfer.c
+++ b/lib/transfer.c
@@ -1398,6 +1398,9 @@ CURLcode Curl_pretransfer(struct Curl_ea
if(data->state.resolve)
result = Curl_loadhostpairs(data);
+ /* If there is a list of hsts files to read */
+ Curl_hsts_loadfiles(data);
+
if(!result) {
/* Allow data->set.use_port to set which port to use. This needs to be
* disabled for example when we follow Location: headers to URLs using
--- a/lib/url.c
+++ b/lib/url.c
@@ -434,7 +434,11 @@ CURLcode Curl_close(struct Curl_easy **d
Curl_altsvc_save(data, data->asi, data->set.str[STRING_ALTSVC]);
Curl_altsvc_cleanup(&data->asi);
Curl_hsts_save(data, data->hsts, data->set.str[STRING_HSTS]);
- Curl_hsts_cleanup(&data->hsts);
+#ifndef CURL_DISABLE_HSTS
+ if(!data->share || !data->share->hsts)
+ Curl_hsts_cleanup(&data->hsts);
+ curl_slist_free_all(data->set.hstslist); /* clean up list */
+#endif
#if !defined(CURL_DISABLE_HTTP) && !defined(CURL_DISABLE_CRYPTO_AUTH)
Curl_http_auth_cleanup_digest(data);
#endif
--- a/lib/urldata.h
+++ b/lib/urldata.h
@@ -1670,6 +1670,8 @@
void *seek_client; /* pointer to pass to the seek callback */
#ifndef CURL_DISABLE_HSTS
+ struct curl_slist *hstslist; /* list of HSTS files set by
+ curl_easy_setopt(HSTS) calls */
curl_hstsread_callback hsts_read;
void *hsts_read_userp;
curl_hstswrite_callback hsts_write;
|
