From ecee0926868d138312e9608531b232f697e50cad Mon Sep 17 00:00:00 2001
From: Daniel Stenberg <daniel@haxx.se>
Date: Mon, 25 Apr 2022 16:24:33 +0200
Subject: [PATCH 1/4] connect: store "conn_remote_port" in the info struct
To make it available after the connection ended.
Upstream-commit: 08b8ef4e726ba10f45081ecda5b3cea788d3c839
Signed-off-by: Kamil Dudka <kdudka@redhat.com>
---
lib/connect.c | 1 +
lib/urldata.h | 6 +++++-
2 files changed, 6 insertions(+), 1 deletion(-)
diff --git a/lib/connect.c b/lib/connect.c
index 64f9511..7518807 100644
--- a/lib/connect.c
+++ b/lib/connect.c
@@ -619,6 +619,7 @@ void Curl_persistconninfo(struct Curl_easy *data, struct connectdata *conn,
data->info.conn_scheme = conn->handler->scheme;
data->info.conn_protocol = conn->handler->protocol;
data->info.conn_primary_port = conn->port;
+ data->info.conn_remote_port = conn->remote_port;
data->info.conn_local_port = local_port;
}
diff --git a/lib/urldata.h b/lib/urldata.h
index f92052a..5218f76 100644
--- a/lib/urldata.h
+++ b/lib/urldata.h
@@ -1167,7 +1167,11 @@ struct PureInfo {
reused, in the connection cache. */
char conn_primary_ip[MAX_IPADR_LEN];
- int conn_primary_port;
+ int conn_primary_port; /* this is the destination port to the connection,
+ which might have been a proxy */
+ int conn_remote_port; /* this is the "remote port", which is the port
+ number of the used URL, independent of proxy or
+ not */
char conn_local_ip[MAX_IPADR_LEN];
int conn_local_port;
const char *conn_scheme;
--
2.34.1
From 12c129f8d0b165d83ed954f68717d88ffc1cfc5f Mon Sep 17 00:00:00 2001
From: Daniel Stenberg <daniel@haxx.se>
Date: Mon, 25 Apr 2022 16:24:33 +0200
Subject: [PATCH 2/4] transfer: redirects to other protocols or ports clear
auth
... unless explicitly permitted.
Bug: https://curl.se/docs/CVE-2022-27774.html
Reported-by: Harry Sintonen
Closes #8748
Upstream-commit: 620ea21410030a9977396b4661806bc187231b79
Signed-off-by: Kamil Dudka <kdudka@redhat.com>
---
lib/transfer.c | 49 ++++++++++++++++++++++++++++++++++++++++++++++++-
1 file changed, 48 insertions(+), 1 deletion(-)
diff --git a/lib/transfer.c b/lib/transfer.c
index 1f8019b..752fe14 100644
--- a/lib/transfer.c
+++ b/lib/transfer.c
@@ -1641,10 +1641,57 @@ CURLcode Curl_follow(struct Curl_easy *data,
return CURLE_OUT_OF_MEMORY;
}
else {
-
uc = curl_url_get(data->state.uh, CURLUPART_URL, &newurl, 0);
if(uc)
return Curl_uc_to_curlcode(uc);
+
+ /* Clear auth if this redirects to a different port number or protocol,
+ unless permitted */
+ if(!data->set.allow_auth_to_other_hosts && (type != FOLLOW_FAKE)) {
+ char *portnum;
+ int port;
+ bool clear = FALSE;
+
+ if(data->set.use_port && data->state.allow_port)
+ /* a custom port is used */
+ port = (int)data->set.use_port;
+ else {
+ uc = curl_url_get(data->state.uh, CURLUPART_PORT, &portnum,
+ CURLU_DEFAULT_PORT);
+ if(uc) {
+ free(newurl);
+ return Curl_uc_to_curlcode(uc);
+ }
+ port = atoi(portnum);
+ free(portnum);
+ }
+ if(port != data->info.conn_remote_port) {
+ infof(data, "Clear auth, redirects to port from %u to %u",
+ data->info.conn_remote_port, port);
+ clear = TRUE;
+ }
+ else {
+ char *scheme;
+ const struct Curl_handler *p;
+ uc = curl_url_get(data->state.uh, CURLUPART_SCHEME, &scheme, 0);
+ if(uc) {
+ free(newurl);
+ return Curl_uc_to_curlcode(uc);
+ }
+
+ p = Curl_builtin_scheme(scheme);
+ if(p && (p->protocol != data->info.conn_protocol)) {
+ infof(data, "Clear auth, redirects scheme from %s to %s",
+ data->info.conn_scheme, scheme);
+ clear = TRUE;
+ }
+ free(scheme);
+ }
+ if(clear) {
+ Curl_safefree(data->state.aptr.user);
+ Curl_safefree(data->state.aptr.passwd);
+ }
+ }
}
if(type == FOLLOW_FAKE) {
--
2.34.1
From 83bf4314d88cc16469afeaaefd6686a50371d1b7 Mon Sep 17 00:00:00 2001
From: Daniel Stenberg <daniel@haxx.se>
Date: Mon, 25 Apr 2022 16:24:33 +0200
Subject: [PATCH 3/4] tests: verify the fix for CVE-2022-27774
- Test 973 redirects from HTTP to FTP, clear auth
- Test 974 redirects from HTTP to HTTP different port, clear auth
- Test 975 redirects from HTTP to FTP, permitted to keep auth
- Test 976 redirects from HTTP to HTTP different port, permitted to keep
auth
Upstream-commit: 5295e8d64ac6949ecb3f9e564317a608f51b90d8
Signed-off-by: Kamil Dudka <kdudka@redhat.com>
---
tests/data/Makefile.inc | 1 +
tests/data/test973 | 88 +++++++++++++++++++++++++++++++++++++++++
tests/data/test974 | 87 ++++++++++++++++++++++++++++++++++++++++
tests/data/test975 | 88 +++++++++++++++++++++++++++++++++++++++++
tests/data/test976 | 88 +++++++++++++++++++++++++++++++++++++++++
5 files changed, 352 insertions(+)
create mode 100644 tests/data/test973
create mode 100644 tests/data/test974
create mode 100644 tests/data/test975
create mode 100644 tests/data/test976
diff --git a/tests/data/Makefile.inc b/tests/data/Makefile.inc
index 7ae2cf8..175fc43 100644
--- a/tests/data/Makefile.inc
+++ b/tests/data/Makefile.inc
@@ -116,6 +116,7 @@ test936 test937 test938 test939 test940 test941 test942 test943 test944 \
test945 test946 test947 test948 test949 test950 test951 test952 test953 \
test954 test955 test956 test957 test958 test959 test960 test961 test962 \
test963 test964 test965 test966 test967 test968 test969 test970 test971 \
+test973 test974 test975 test976 \
\
test980 test981 test982 test983 test984 test985 test986 \
\
diff --git a/tests/data/test973 b/tests/data/test973
new file mode 100644
index 0000000..6ced107
--- /dev/null
+++ b/tests/data/test973
@@ -0,0 +1,88 @@
+<testcase>
+<info>
+<keywords>
+HTTP
+FTP
+--location
+</keywords>
+</info>
+
+#
+# Server-side
+<reply>
+<data>
+HTTP/1.1 301 redirect
+Date: Tue, 09 Nov 2010 14:49:00 GMT
+Server: test-server/fake
+Content-Length: 0
+Connection: close
+Content-Type: text/html
+Location: ftp://%HOSTIP:%FTPPORT/a/path/%TESTNUMBER0002
+
+</data>
+<data2>
+data
+ to
+ see
+that FTP
+works
+ so does it?
+</data2>
+
+<datacheck>
+HTTP/1.1 301 redirect
+Date: Tue, 09 Nov 2010 14:49:00 GMT
+Server: test-server/fake
+Content-Length: 0
+Connection: close
+Content-Type: text/html
+Location: ftp://%HOSTIP:%FTPPORT/a/path/%TESTNUMBER0002
+
+data
+ to
+ see
+that FTP
+works
+ so does it?
+</datacheck>
+
+</reply>
+
+#
+# Client-side
+<client>
+<server>
+http
+ftp
+</server>
+ <name>
+HTTP with auth redirected to FTP w/o auth
+ </name>
+ <command>
+http://%HOSTIP:%HTTPPORT/%TESTNUMBER -L -u joe:secret
+</command>
+</client>
+
+#
+# Verify data after the test has been "shot"
+<verify>
+<protocol>
+GET /%TESTNUMBER HTTP/1.1
+Host: %HOSTIP:%HTTPPORT
+Authorization: Basic am9lOnNlY3JldA==
+User-Agent: curl/%VERSION
+Accept: */*
+
+USER anonymous
+PASS ftp@example.com
+PWD
+CWD a
+CWD path
+EPSV
+TYPE I
+SIZE %TESTNUMBER0002
+RETR %TESTNUMBER0002
+QUIT
+</protocol>
+</verify>
+</testcase>
diff --git a/tests/data/test974 b/tests/data/test974
new file mode 100644
index 0000000..ac4e641
--- /dev/null
+++ b/tests/data/test974
@@ -0,0 +1,87 @@
+<testcase>
+<info>
+<keywords>
+HTTP
+--location
+</keywords>
+</info>
+
+#
+# Server-side
+<reply>
+<data>
+HTTP/1.1 301 redirect
+Date: Tue, 09 Nov 2010 14:49:00 GMT
+Server: test-server/fake
+Content-Length: 0
+Connection: close
+Content-Type: text/html
+Location: http://firsthost.com:9999/a/path/%TESTNUMBER0002
+
+</data>
+<data2>
+HTTP/1.1 200 OK
+Date: Tue, 09 Nov 2010 14:49:00 GMT
+Server: test-server/fake
+Content-Length: 4
+Connection: close
+Content-Type: text/html
+
+hey
+</data2>
+
+<datacheck>
+HTTP/1.1 301 redirect
+Date: Tue, 09 Nov 2010 14:49:00 GMT
+Server: test-server/fake
+Content-Length: 0
+Connection: close
+Content-Type: text/html
+Location: http://firsthost.com:9999/a/path/%TESTNUMBER0002
+
+HTTP/1.1 200 OK
+Date: Tue, 09 Nov 2010 14:49:00 GMT
+Server: test-server/fake
+Content-Length: 4
+Connection: close
+Content-Type: text/html
+
+hey
+</datacheck>
+
+</reply>
+
+#
+# Client-side
+<client>
+<server>
+http
+</server>
+ <name>
+HTTP with auth redirected to HTTP on a diff port w/o auth
+ </name>
+ <command>
+-x http://%HOSTIP:%HTTPPORT http://firsthost.com -L -u joe:secret
+</command>
+</client>
+
+#
+# Verify data after the test has been "shot"
+<verify>
+<protocol>
+GET http://firsthost.com/ HTTP/1.1
+Host: firsthost.com
+Authorization: Basic am9lOnNlY3JldA==
+User-Agent: curl/%VERSION
+Accept: */*
+Proxy-Connection: Keep-Alive
+
+GET http://firsthost.com:9999/a/path/%TESTNUMBER0002 HTTP/1.1
+Host: firsthost.com:9999
+User-Agent: curl/%VERSION
+Accept: */*
+Proxy-Connection: Keep-Alive
+
+</protocol>
+</verify>
+</testcase>
diff --git a/tests/data/test975 b/tests/data/test975
new file mode 100644
index 0000000..85e03e4
--- /dev/null
+++ b/tests/data/test975
@@ -0,0 +1,88 @@
+<testcase>
+<info>
+<keywords>
+HTTP
+FTP
+--location-trusted
+</keywords>
+</info>
+
+#
+# Server-side
+<reply>
+<data>
+HTTP/1.1 301 redirect
+Date: Tue, 09 Nov 2010 14:49:00 GMT
+Server: test-server/fake
+Content-Length: 0
+Connection: close
+Content-Type: text/html
+Location: ftp://%HOSTIP:%FTPPORT/a/path/%TESTNUMBER0002
+
+</data>
+<data2>
+data
+ to
+ see
+that FTP
+works
+ so does it?
+</data2>
+
+<datacheck>
+HTTP/1.1 301 redirect
+Date: Tue, 09 Nov 2010 14:49:00 GMT
+Server: test-server/fake
+Content-Length: 0
+Connection: close
+Content-Type: text/html
+Location: ftp://%HOSTIP:%FTPPORT/a/path/%TESTNUMBER0002
+
+data
+ to
+ see
+that FTP
+works
+ so does it?
+</datacheck>
+
+</reply>
+
+#
+# Client-side
+<client>
+<server>
+http
+ftp
+</server>
+ <name>
+HTTP with auth redirected to FTP allowing auth to continue
+ </name>
+ <command>
+http://%HOSTIP:%HTTPPORT/%TESTNUMBER --location-trusted -u joe:secret
+</command>
+</client>
+
+#
+# Verify data after the test has been "shot"
+<verify>
+<protocol>
+GET /%TESTNUMBER HTTP/1.1
+Host: %HOSTIP:%HTTPPORT
+Authorization: Basic am9lOnNlY3JldA==
+User-Agent: curl/%VERSION
+Accept: */*
+
+USER joe
+PASS secret
+PWD
+CWD a
+CWD path
+EPSV
+TYPE I
+SIZE %TESTNUMBER0002
+RETR %TESTNUMBER0002
+QUIT
+</protocol>
+</verify>
+</testcase>
diff --git a/tests/data/test976 b/tests/data/test976
new file mode 100644
index 0000000..c4dd61e
--- /dev/null
+++ b/tests/data/test976
@@ -0,0 +1,88 @@
+<testcase>
+<info>
+<keywords>
+HTTP
+--location-trusted
+</keywords>
+</info>
+
+#
+# Server-side
+<reply>
+<data>
+HTTP/1.1 301 redirect
+Date: Tue, 09 Nov 2010 14:49:00 GMT
+Server: test-server/fake
+Content-Length: 0
+Connection: close
+Content-Type: text/html
+Location: http://firsthost.com:9999/a/path/%TESTNUMBER0002
+
+</data>
+<data2>
+HTTP/1.1 200 OK
+Date: Tue, 09 Nov 2010 14:49:00 GMT
+Server: test-server/fake
+Content-Length: 4
+Connection: close
+Content-Type: text/html
+
+hey
+</data2>
+
+<datacheck>
+HTTP/1.1 301 redirect
+Date: Tue, 09 Nov 2010 14:49:00 GMT
+Server: test-server/fake
+Content-Length: 0
+Connection: close
+Content-Type: text/html
+Location: http://firsthost.com:9999/a/path/%TESTNUMBER0002
+
+HTTP/1.1 200 OK
+Date: Tue, 09 Nov 2010 14:49:00 GMT
+Server: test-server/fake
+Content-Length: 4
+Connection: close
+Content-Type: text/html
+
+hey
+</datacheck>
+
+</reply>
+
+#
+# Client-side
+<client>
+<server>
+http
+</server>
+ <name>
+HTTP with auth redirected to HTTP on a diff port --location-trusted
+ </name>
+ <command>
+-x http://%HOSTIP:%HTTPPORT http://firsthost.com --location-trusted -u joe:secret
+</command>
+</client>
+
+#
+# Verify data after the test has been "shot"
+<verify>
+<protocol>
+GET http://firsthost.com/ HTTP/1.1
+Host: firsthost.com
+Authorization: Basic am9lOnNlY3JldA==
+User-Agent: curl/%VERSION
+Accept: */*
+Proxy-Connection: Keep-Alive
+
+GET http://firsthost.com:9999/a/path/%TESTNUMBER0002 HTTP/1.1
+Host: firsthost.com:9999
+Authorization: Basic am9lOnNlY3JldA==
+User-Agent: curl/%VERSION
+Accept: */*
+Proxy-Connection: Keep-Alive
+
+</protocol>
+</verify>
+</testcase>
--
2.34.1
From 443ce415aa60caaf8b1c9b0b71fff8d26263daca Mon Sep 17 00:00:00 2001
From: Daniel Stenberg <daniel@haxx.se>
Date: Mon, 25 Apr 2022 17:59:15 +0200
Subject: [PATCH 4/4] openssl: don't leak the SRP credentials in redirects
either
Follow-up to 620ea21410030
Reported-by: Harry Sintonen
Closes #8751
Upstream-commit: 139a54ed0a172adaaf1a78d6f4fff50b2c3f9e08
Signed-off-by: Kamil Dudka <kdudka@redhat.com>
---
lib/http.c | 10 +++++-----
lib/http.h | 6 ++++++
lib/vtls/openssl.c | 3 ++-
3 files changed, 13 insertions(+), 6 deletions(-)
diff --git a/lib/http.c b/lib/http.c
index 0791dcf..4433824 100644
--- a/lib/http.c
+++ b/lib/http.c
@@ -776,10 +776,10 @@ output_auth_headers(struct Curl_easy *data,
}
/*
- * allow_auth_to_host() tells if autentication, cookies or other "sensitive
- * data" can (still) be sent to this host.
+ * Curl_allow_auth_to_host() tells if authentication, cookies or other
+ * "sensitive data" can (still) be sent to this host.
*/
-static bool allow_auth_to_host(struct Curl_easy *data)
+bool Curl_allow_auth_to_host(struct Curl_easy *data)
{
struct connectdata *conn = data->conn;
return (!data->state.this_is_a_follow ||
@@ -864,7 +864,7 @@ Curl_http_output_auth(struct Curl_easy *data,
/* To prevent the user+password to get sent to other than the original host
due to a location-follow */
- if(allow_auth_to_host(data)
+ if(Curl_allow_auth_to_host(data)
|| conn->bits.netrc)
result = output_auth_headers(data, conn, authhost, request, path, FALSE);
else
@@ -1917,7 +1917,7 @@ CURLcode Curl_add_custom_headers(struct Curl_easy *data,
checkprefix("Cookie:", compare)) &&
/* be careful of sending this potentially sensitive header to
other hosts */
- !allow_auth_to_host(data))
+ !Curl_allow_auth_to_host(data))
;
else {
#ifdef USE_HYPER
diff --git a/lib/http.h b/lib/http.h
index 07e963d..9000bae 100644
--- a/lib/http.h
+++ b/lib/http.h
@@ -317,4 +317,10 @@ Curl_http_output_auth(struct Curl_easy *data,
bool proxytunnel); /* TRUE if this is the request setting
up the proxy tunnel */
+/*
+ * Curl_allow_auth_to_host() tells if authentication, cookies or other
+ * "sensitive data" can (still) be sent to this host.
+ */
+bool Curl_allow_auth_to_host(struct Curl_easy *data);
+
#endif /* HEADER_CURL_HTTP_H */
diff --git a/lib/vtls/openssl.c b/lib/vtls/openssl.c
index 1bafe96..97c5666 100644
--- a/lib/vtls/openssl.c
+++ b/lib/vtls/openssl.c
@@ -2857,7 +2857,8 @@ static CURLcode ossl_connect_step1(struct Curl_easy *data,
#endif
#ifdef USE_OPENSSL_SRP
- if(ssl_authtype == CURL_TLSAUTH_SRP) {
+ if((ssl_authtype == CURL_TLSAUTH_SRP) &&
+ Curl_allow_auth_to_host(data)) {
char * const ssl_username = SSL_SET_OPTION(username);
infof(data, "Using TLS-SRP username: %s\n", ssl_username);
--
2.34.1