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openGauss-third_party/dependency/libcurl/2-CVE-2021-22946.patch
buter 8fb94206ac fix CVEs
2022-07-18 19:42:20 +08:00

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commit 74cacd74f6483fc523f8d34e38b7efc533570242
Author: Patrick Monnerat <patrick@monnerat.net>
Date: Wed Sep 8 11:56:22 2021 +0200
[Backport] ftp,imap,pop3: do not ignore --ssl-reqd
Offering: RTOS
CVE: CVE-2021-22946
Reference: https://github.com/curl/curl/commit/364f174724ef115
DTS/AR: DTS2021091628899
type: LTS
reason: fix CVE-2021-22946 for version 7.78.0
In imap and pop3, check if TLS is required even when capabilities
request has failed.
In ftp, ignore preauthentication (230 status of server greeting) if TLS
is required.
Bug: https://curl.se/docs/CVE-2021-22946.html
CVE-2021-22946
Signed-off-by: lijingyu <lijingyu21@huawei.com>
diff --git a/lib/ftp.c b/lib/ftp.c
index 1a699de59..08d18ca74 100644
--- a/lib/ftp.c
+++ b/lib/ftp.c
@@ -2681,9 +2681,12 @@ static CURLcode ftp_statemachine(struct Curl_easy *data,
/* we have now received a full FTP server response */
switch(ftpc->state) {
case FTP_WAIT220:
- if(ftpcode == 230)
- /* 230 User logged in - already! */
- return ftp_state_user_resp(data, ftpcode, ftpc->state);
+ if(ftpcode == 230) {
+ /* 230 User logged in - already! Take as 220 if TLS required. */
+ if(data->set.use_ssl <= CURLUSESSL_TRY ||
+ conn->bits.ftp_use_control_ssl)
+ return ftp_state_user_resp(data, ftpcode, ftpc->state);
+ }
else if(ftpcode != 220) {
failf(data, "Got a %03d ftp-server response when 220 was expected",
ftpcode);
diff --git a/lib/imap.c b/lib/imap.c
index ab4d412ee..efc0420ce 100644
--- a/lib/imap.c
+++ b/lib/imap.c
@@ -935,22 +935,18 @@ static CURLcode imap_state_capability_resp(struct Curl_easy *data,
line += wordlen;
}
}
- else if(imapcode == IMAP_RESP_OK) {
- if(data->set.use_ssl && !conn->ssl[FIRSTSOCKET].use) {
- /* We don't have a SSL/TLS connection yet, but SSL is requested */
- if(imapc->tls_supported)
- /* Switch to TLS connection now */
- result = imap_perform_starttls(data, conn);
- else if(data->set.use_ssl == CURLUSESSL_TRY)
- /* Fallback and carry on with authentication */
- result = imap_perform_authentication(data, conn);
- else {
- failf(data, "STARTTLS not supported.");
- result = CURLE_USE_SSL_FAILED;
- }
+ else if(data->set.use_ssl && !conn->ssl[FIRSTSOCKET].use) {
+ /* PREAUTH is not compatible with STARTTLS. */
+ if(imapcode == IMAP_RESP_OK && imapc->tls_supported && !imapc->preauth) {
+ /* Switch to TLS connection now */
+ result = imap_perform_starttls(data, conn);
}
- else
+ else if(data->set.use_ssl <= CURLUSESSL_TRY)
result = imap_perform_authentication(data, conn);
+ else {
+ failf(data, "STARTTLS not available.");
+ result = CURLE_USE_SSL_FAILED;
+ }
}
else
result = imap_perform_authentication(data, conn);
diff --git a/lib/pop3.c b/lib/pop3.c
index 5fdd6f3e0..f97e10eab 100644
--- a/lib/pop3.c
+++ b/lib/pop3.c
@@ -741,28 +741,23 @@ static CURLcode pop3_state_capa_resp(struct Curl_easy *data, int pop3code,
}
}
}
- else if(pop3code == '+') {
- if(data->set.use_ssl && !conn->ssl[FIRSTSOCKET].use) {
- /* We don't have a SSL/TLS connection yet, but SSL is requested */
- if(pop3c->tls_supported)
- /* Switch to TLS connection now */
- result = pop3_perform_starttls(data, conn);
- else if(data->set.use_ssl == CURLUSESSL_TRY)
- /* Fallback and carry on with authentication */
- result = pop3_perform_authentication(data, conn);
- else {
- failf(data, "STLS not supported.");
- result = CURLE_USE_SSL_FAILED;
- }
- }
- else
- result = pop3_perform_authentication(data, conn);
- }
else {
/* Clear text is supported when CAPA isn't recognised */
- pop3c->authtypes |= POP3_TYPE_CLEARTEXT;
+ if(pop3code != '+')
+ pop3c->authtypes |= POP3_TYPE_CLEARTEXT;
- result = pop3_perform_authentication(data, conn);
+ if(!data->set.use_ssl || conn->ssl[FIRSTSOCKET].use)
+ result = pop3_perform_authentication(data, conn);
+ else if(pop3code == '+' && pop3c->tls_supported)
+ /* Switch to TLS connection now */
+ result = pop3_perform_starttls(data, conn);
+ else if(data->set.use_ssl <= CURLUSESSL_TRY)
+ /* Fallback and carry on with authentication */
+ result = pop3_perform_authentication(data, conn);
+ else {
+ failf(data, "STLS not supported.");
+ result = CURLE_USE_SSL_FAILED;
+ }
}
return result;
diff --git a/tests/data/Makefile.inc b/tests/data/Makefile.inc
index 163696962..5cd092192 100644
--- a/tests/data/Makefile.inc
+++ b/tests/data/Makefile.inc
@@ -118,6 +118,8 @@ test954 test955 test956 test957 test958 test959 test960 test961 test962 \
test963 test964 test965 test966 test967 test968 test969 test970 test971 \
test972 \
\
+test984 test985 test986 \
+\
test1000 test1001 test1002 test1003 test1004 test1005 test1006 test1007 \
test1008 test1009 test1010 test1011 test1012 test1013 test1014 test1015 \
test1016 test1017 test1018 test1019 test1020 test1021 test1022 test1023 \
diff --git a/tests/data/test984 b/tests/data/test984
new file mode 100644
index 000000000..51dee427e
--- /dev/null
+++ b/tests/data/test984
@@ -0,0 +1,56 @@
+<testcase>
+<info>
+<keywords>
+IMAP
+STARTTLS
+</keywords>
+</info>
+
+#
+# Server-side
+<reply>
+<servercmd>
+REPLY CAPABILITY A001 BAD Not implemented
+</servercmd>
+</reply>
+
+#
+# Client-side
+<client>
+<features>
+SSL
+</features>
+<server>
+imap
+</server>
+ <name>
+IMAP require STARTTLS with failing capabilities
+ </name>
+ <command>
+imap://%HOSTIP:%IMAPPORT/%TESTNUMBER -T log/upload%TESTNUMBER -u user:secret --ssl-reqd
+</command>
+<file name="log/upload%TESTNUMBER">
+Date: Mon, 7 Feb 1994 21:52:25 -0800 (PST)
+From: Fred Foobar <foobar@example.COM>
+Subject: afternoon meeting
+To: joe@example.com
+Message-Id: <B27397-0100000@example.COM>
+MIME-Version: 1.0
+Content-Type: TEXT/PLAIN; CHARSET=US-ASCII
+
+Hello Joe, do you think we can meet at 3:30 tomorrow?
+</file>
+</client>
+
+#
+# Verify data after the test has been "shot"
+<verify>
+# 64 is CURLE_USE_SSL_FAILED
+<errorcode>
+64
+</errorcode>
+<protocol>
+A001 CAPABILITY
+</protocol>
+</verify>
+</testcase>
diff --git a/tests/data/test985 b/tests/data/test985
new file mode 100644
index 000000000..62f52ca1e
--- /dev/null
+++ b/tests/data/test985
@@ -0,0 +1,54 @@
+<testcase>
+<info>
+<keywords>
+POP3
+STARTTLS
+</keywords>
+</info>
+
+#
+# Server-side
+<reply>
+<servercmd>
+REPLY CAPA -ERR Not implemented
+</servercmd>
+<data nocheck="yes">
+From: me@somewhere
+To: fake@nowhere
+
+body
+
+--
+ yours sincerely
+</data>
+</reply>
+
+#
+# Client-side
+<client>
+<features>
+SSL
+</features>
+<server>
+pop3
+</server>
+ <name>
+POP3 require STARTTLS with failing capabilities
+ </name>
+ <command>
+pop3://%HOSTIP:%POP3PORT/%TESTNUMBER -u user:secret --ssl-reqd
+ </command>
+</client>
+
+#
+# Verify data after the test has been "shot"
+<verify>
+# 64 is CURLE_USE_SSL_FAILED
+<errorcode>
+64
+</errorcode>
+<protocol>
+CAPA
+</protocol>
+</verify>
+</testcase>
diff --git a/tests/data/test986 b/tests/data/test986
new file mode 100644
index 000000000..6c22c7771
--- /dev/null
+++ b/tests/data/test986
@@ -0,0 +1,53 @@
+<testcase>
+<info>
+<keywords>
+FTP
+STARTTLS
+</keywords>
+</info>
+
+#
+# Server-side
+<reply>
+<servercmd>
+REPLY welcome 230 Welcome
+REPLY AUTH 500 unknown command
+</servercmd>
+</reply>
+
+# Client-side
+<client>
+<features>
+SSL
+</features>
+<server>
+ftp
+</server>
+ <name>
+FTP require STARTTLS while preauthenticated
+ </name>
+<file name="log/test%TESTNUMBER.txt">
+data
+ to
+ see
+that FTPS
+works
+ so does it?
+</file>
+ <command>
+--ssl-reqd --ftp-ssl-control ftp://%HOSTIP:%FTPPORT/%TESTNUMBER -T log/test%TESTNUMBER.txt -u user:secret
+</command>
+</client>
+
+# Verify data after the test has been "shot"
+<verify>
+# 64 is CURLE_USE_SSL_FAILED
+<errorcode>
+64
+</errorcode>
+<protocol>
+AUTH SSL
+AUTH TLS
+</protocol>
+</verify>
+</testcase>
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