Commit 217a4d3e authored by Rocky Automation's avatar Rocky Automation 📺
Browse files

import curl-7.61.1-18.el8_4.2

parent 7a92a58e
From 03ca8c6faca7de6628f9cbec3001ec6466c88d07 Mon Sep 17 00:00:00 2001
From: Patrick Monnerat <patrick@monnerat.net>
Date: Wed, 8 Sep 2021 11:56:22 +0200
Subject: [PATCH] ftp,imap,pop3: do not ignore --ssl-reqd
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
Upstream-commit: 364f174724ef115c63d5e5dc1d3342c8a43b1cca
Signed-off-by: Kamil Dudka <kdudka@redhat.com>
---
lib/ftp.c | 9 ++++---
lib/imap.c | 24 ++++++++----------
lib/pop3.c | 33 +++++++++++-------------
tests/data/Makefile.inc | 2 ++
tests/data/test984 | 56 +++++++++++++++++++++++++++++++++++++++++
tests/data/test985 | 54 +++++++++++++++++++++++++++++++++++++++
tests/data/test986 | 53 ++++++++++++++++++++++++++++++++++++++
7 files changed, 195 insertions(+), 36 deletions(-)
create mode 100644 tests/data/test984
create mode 100644 tests/data/test985
create mode 100644 tests/data/test986
diff --git a/lib/ftp.c b/lib/ftp.c
index 71c9642..30ebeaa 100644
--- a/lib/ftp.c
+++ b/lib/ftp.c
@@ -2621,9 +2621,12 @@ static CURLcode ftp_statemach_act(struct connectdata *conn)
/* 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(conn, 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->ssl[FIRSTSOCKET].use)
+ return ftp_state_user_resp(conn, 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 bda23a5..7e159d4 100644
--- a/lib/imap.c
+++ b/lib/imap.c
@@ -910,22 +910,18 @@ static CURLcode imap_state_capability_resp(struct connectdata *conn,
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(conn);
- else if(data->set.use_ssl == CURLUSESSL_TRY)
- /* Fallback and carry on with authentication */
- result = imap_perform_authentication(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(conn);
}
- else
+ else if(data->set.use_ssl <= CURLUSESSL_TRY)
result = imap_perform_authentication(conn);
+ else {
+ failf(data, "STARTTLS not available.");
+ result = CURLE_USE_SSL_FAILED;
+ }
}
else
result = imap_perform_authentication(conn);
diff --git a/lib/pop3.c b/lib/pop3.c
index 04cc887..3e916ce 100644
--- a/lib/pop3.c
+++ b/lib/pop3.c
@@ -718,28 +718,23 @@ static CURLcode pop3_state_capa_resp(struct connectdata *conn, 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(conn);
- else if(data->set.use_ssl == CURLUSESSL_TRY)
- /* Fallback and carry on with authentication */
- result = pop3_perform_authentication(conn);
- else {
- failf(data, "STLS not supported.");
- result = CURLE_USE_SSL_FAILED;
- }
- }
- else
- result = pop3_perform_authentication(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(conn);
+ if(!data->set.use_ssl || conn->ssl[FIRSTSOCKET].use)
+ result = pop3_perform_authentication(conn);
+ else if(pop3code == '+' && pop3c->tls_supported)
+ /* Switch to TLS connection now */
+ result = pop3_perform_starttls(conn);
+ else if(data->set.use_ssl <= CURLUSESSL_TRY)
+ /* Fallback and carry on with authentication */
+ result = pop3_perform_authentication(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 ef9252b..1ba482b 100644
--- a/tests/data/Makefile.inc
+++ b/tests/data/Makefile.inc
@@ -108,6 +108,8 @@ test927 test928 test929 test930 test931 test932 test933 test934 test935 \
test936 test937 test938 test939 test940 test941 test942 test943 test944 \
test945 test946 test947 test948 test949 test950 test951 test952 \
\
+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 0000000..e573f23
--- /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 0000000..d0db4aa
--- /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 0000000..a709437
--- /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>
--
2.31.1
From a1ec463c8207bde97b3575d12e396e999a55a8d0 Mon Sep 17 00:00:00 2001
From: Patrick Monnerat <patrick@monnerat.net>
Date: Tue, 7 Sep 2021 13:26:42 +0200
Subject: [PATCH] ftp,imap,pop3,smtp: reject STARTTLS server response
pipelining
If a server pipelines future responses within the STARTTLS response, the
former are preserved in the pingpong cache across TLS negotiation and
used as responses to the encrypted commands.
This fix detects pipelined STARTTLS responses and rejects them with an
error.
CVE-2021-22947
Bug: https://curl.se/docs/CVE-2021-22947.html
Upstream-commit: 8ef147c43646e91fdaad5d0e7b60351f842e5c68
Signed-off-by: Kamil Dudka <kdudka@redhat.com>
---
lib/ftp.c | 3 +++
lib/imap.c | 4 +++
lib/pop3.c | 4 +++
lib/smtp.c | 4 +++
tests/data/Makefile.inc | 2 +-
tests/data/test980 | 52 ++++++++++++++++++++++++++++++++++++
tests/data/test981 | 59 +++++++++++++++++++++++++++++++++++++++++
tests/data/test982 | 57 +++++++++++++++++++++++++++++++++++++++
tests/data/test983 | 52 ++++++++++++++++++++++++++++++++++++
9 files changed, 236 insertions(+), 1 deletion(-)
create mode 100644 tests/data/test980
create mode 100644 tests/data/test981
create mode 100644 tests/data/test982
create mode 100644 tests/data/test983
diff --git a/lib/ftp.c b/lib/ftp.c
index 71f998e..e920138 100644
--- a/lib/ftp.c
+++ b/lib/ftp.c
@@ -2688,6 +2688,9 @@ static CURLcode ftp_statemach_act(struct connectdata *conn)
case FTP_AUTH:
/* we have gotten the response to a previous AUTH command */
+ if(pp->cache_size)
+ return CURLE_WEIRD_SERVER_REPLY; /* Forbid pipelining in response. */
+
/* RFC2228 (page 5) says:
*
* If the server is willing to accept the named security mechanism,
diff --git a/lib/imap.c b/lib/imap.c
index feb7445..09bc5d6 100644
--- a/lib/imap.c
+++ b/lib/imap.c
@@ -939,6 +939,10 @@ static CURLcode imap_state_starttls_resp(struct connectdata *conn,
(void)instate; /* no use for this yet */
+ /* Pipelining in response is forbidden. */
+ if(conn->proto.imapc.pp.cache_size)
+ return CURLE_WEIRD_SERVER_REPLY;
+
if(imapcode != IMAP_RESP_OK) {
if(data->set.use_ssl != CURLUSESSL_TRY) {
failf(data, "STARTTLS denied");
diff --git a/lib/pop3.c b/lib/pop3.c
index 7698d1c..dccfced 100644
--- a/lib/pop3.c
+++ b/lib/pop3.c
@@ -750,6 +750,10 @@ static CURLcode pop3_state_starttls_resp(struct connectdata *conn,
(void)instate; /* no use for this yet */
+ /* Pipelining in response is forbidden. */
+ if(conn->proto.pop3c.pp.cache_size)
+ return CURLE_WEIRD_SERVER_REPLY;
+
if(pop3code != '+') {
if(data->set.use_ssl != CURLUSESSL_TRY) {
failf(data, "STARTTLS denied");
diff --git a/lib/smtp.c b/lib/smtp.c
index 1defb25..1f89777 100644
--- a/lib/smtp.c
+++ b/lib/smtp.c
@@ -685,6 +685,10 @@ static CURLcode smtp_state_starttls_resp(struct connectdata *conn,
(void)instate; /* no use for this yet */
+ /* Pipelining in response is forbidden. */
+ if(conn->proto.smtpc.pp.cache_size)
+ return CURLE_WEIRD_SERVER_REPLY;
+
if(smtpcode != 220) {
if(data->set.use_ssl != CURLUSESSL_TRY) {
failf(data, "STARTTLS denied, code %d", smtpcode);
diff --git a/tests/data/Makefile.inc b/tests/data/Makefile.inc
index 163ce59..42b0569 100644
--- a/tests/data/Makefile.inc
+++ b/tests/data/Makefile.inc
@@ -108,7 +108,7 @@ test927 test928 test929 test930 test931 test932 test933 test934 test935 \
test936 test937 test938 test939 test940 test941 test942 test943 test944 \
test945 test946 test947 test948 test949 test950 test951 test952 \
\
-test984 test985 test986 \
+test980 test981 test982 test983 test984 test985 test986 \
\
test1000 test1001 test1002 test1003 test1004 test1005 test1006 test1007 \
test1008 test1009 test1010 test1011 test1012 test1013 test1014 test1015 \
diff --git a/tests/data/test980 b/tests/data/test980
new file mode 100644
index 0000000..97567f8
--- /dev/null
+++ b/tests/data/test980
@@ -0,0 +1,52 @@
+<testcase>
+<info>
+<keywords>
+SMTP
+STARTTLS
+</keywords>
+</info>
+
+#
+# Server-side
+<reply>
+<servercmd>
+CAPA STARTTLS
+AUTH PLAIN
+REPLY STARTTLS 454 currently unavailable\r\n235 Authenticated\r\n250 2.1.0 Sender ok\r\n250 2.1.5 Recipient ok\r\n354 Enter mail\r\n250 2.0.0 Accepted
+REPLY AUTH 535 5.7.8 Authentication credentials invalid
+</servercmd>
+</reply>
+
+#
+# Client-side
+<client>
+<features>
+SSL
+</features>
+<server>
+smtp
+</server>
+ <name>
+SMTP STARTTLS pipelined server response
+ </name>
+<stdin>
+mail body
+</stdin>
+ <command>
+smtp://%HOSTIP:%SMTPPORT/%TESTNUMBER --mail-rcpt recipient@example.com --mail-from sender@example.com -u user:secret --ssl --sasl-ir -T -
+</command>
+</client>
+
+#
+# Verify data after the test has been "shot"
+<verify>
+# 8 is CURLE_WEIRD_SERVER_REPLY
+<errorcode>
+8
+</errorcode>
+<protocol>
+EHLO %TESTNUMBER
+STARTTLS
+</protocol>
+</verify>
+</testcase>
diff --git a/tests/data/test981 b/tests/data/test981
new file mode 100644
index 0000000..2b98ce4
--- /dev/null
+++ b/tests/data/test981
@@ -0,0 +1,59 @@
+<testcase>
+<info>
+<keywords>
+IMAP
+STARTTLS
+</keywords>
+</info>
+
+#
+# Server-side
+<reply>
+<servercmd>
+CAPA STARTTLS
+REPLY STARTTLS A002 BAD currently unavailable\r\nA003 OK Authenticated\r\nA004 OK Accepted
+REPLY LOGIN A003 BAD Authentication credentials invalid
+</servercmd>
+</reply>
+
+#
+# Client-side
+<client>
+<features>
+SSL
+</features>
+<server>
+imap
+</server>
+ <name>
+IMAP STARTTLS pipelined server response
+ </name>
+ <command>
+imap://%HOSTIP:%IMAPPORT/%TESTNUMBER -T log/upload%TESTNUMBER -u user:secret --ssl
+</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>
+# 8 is CURLE_WEIRD_SERVER_REPLY
+<errorcode>
+8
+</errorcode>
+<protocol>
+A001 CAPABILITY
+A002 STARTTLS
+</protocol>
+</verify>
+</testcase>
diff --git a/tests/data/test982 b/tests/data/test982
new file mode 100644
index 0000000..9e07cc0
--- /dev/null
+++ b/tests/data/test982
@@ -0,0 +1,57 @@
+<testcase>
+<info>
+<keywords>
+POP3
+STARTTLS
+</keywords>
+</info>
+
+#
+# Server-side
+<reply>
+<servercmd>
+CAPA STLS USER
+REPLY STLS -ERR currently unavailable\r\n+OK user accepted\r\n+OK authenticated
+REPLY PASS -ERR Authentication credentials invalid
+</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 STARTTLS pipelined server response
+ </name>
+ <command>
+pop3://%HOSTIP:%POP3PORT/%TESTNUMBER -u user:secret --ssl
+ </command>
+</client>
+
+#
+# Verify data after the test has been "shot"
+<verify>
+# 8 is CURLE_WEIRD_SERVER_REPLY
+<errorcode>
+8
+</errorcode>
+<protocol>
+CAPA
+STLS
+</protocol>
+</verify>
+</testcase>
diff --git a/tests/data/test983 b/tests/data/test983
new file mode 100644
index 0000000..300ec45
--- /dev/null
+++ b/tests/data/test983
@@ -0,0 +1,52 @@
+<testcase>
+<info>