diff options
Diffstat (limited to 'meta/recipes-support/curl/curl/cve-2021-22947.patch')
| -rw-r--r-- | meta/recipes-support/curl/curl/cve-2021-22947.patch | 355 |
1 files changed, 355 insertions, 0 deletions
diff --git a/meta/recipes-support/curl/curl/cve-2021-22947.patch b/meta/recipes-support/curl/curl/cve-2021-22947.patch new file mode 100644 index 0000000000..8a5031275a --- /dev/null +++ b/meta/recipes-support/curl/curl/cve-2021-22947.patch @@ -0,0 +1,355 @@ +CVE: CVE-2021-22947 +Upstream-Status: Backport +Signed-off-by: Ross Burton <ross.burton@arm.com> + +From aefa7370cb02801a571d51287d290d67068998b8 Mon Sep 17 00:00:00 2001 +From: Patrick Monnerat <patrick@monnerat.net> +Date: Tue, 7 Sep 2021 13:26:42 +0200 +Subject: [PATCH 3/3] 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 +--- + 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 08d18ca74..0b9c9b732 100644 +--- a/lib/ftp.c ++++ b/lib/ftp.c +@@ -2743,6 +2743,9 @@ static CURLcode ftp_statemachine(struct Curl_easy *data, + 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 efc0420ce..d1a48d7e3 100644 +--- a/lib/imap.c ++++ b/lib/imap.c +@@ -964,6 +964,10 @@ static CURLcode imap_state_starttls_resp(struct Curl_easy *data, + + (void)instate; /* no use for this yet */ + ++ /* Pipelining in response is forbidden. */ ++ if(data->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 f97e10eab..a06acb7b8 100644 +--- a/lib/pop3.c ++++ b/lib/pop3.c +@@ -772,6 +772,10 @@ static CURLcode pop3_state_starttls_resp(struct Curl_easy *data, + CURLcode result = CURLE_OK; + (void)instate; /* no use for this yet */ + ++ /* Pipelining in response is forbidden. */ ++ if(data->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 1a3da1559..9b9403b3d 100644 +--- a/lib/smtp.c ++++ b/lib/smtp.c +@@ -835,6 +835,10 @@ static CURLcode smtp_state_starttls_resp(struct Curl_easy *data, + CURLcode result = CURLE_OK; + (void)instate; /* no use for this yet */ + ++ /* Pipelining in response is forbidden. */ ++ if(data->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 5cd092192..c524b993e 100644 +--- a/tests/data/Makefile.inc ++++ b/tests/data/Makefile.inc +@@ -118,7 +118,7 @@ test954 test955 test956 test957 test958 test959 test960 test961 test962 \ + test963 test964 test965 test966 test967 test968 test969 test970 test971 \ + test972 \ + \ +-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 000000000..97567f856 +--- /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 000000000..2b98ce42a +--- /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 000000000..9e07cc0b3 +--- /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 000000000..300ec459c +--- /dev/null ++++ b/tests/data/test983 +@@ -0,0 +1,52 @@ ++<testcase> ++<info> ++<keywords> ++FTP ++STARTTLS ++</keywords> ++</info> ++ ++# ++# Server-side ++<reply> ++<servercmd> ++REPLY AUTH 500 unknown command\r\n500 unknown command\r\n331 give password\r\n230 Authenticated\r\n257 "/"\r\n200 OK\r\n200 OK\r\n200 OK\r\n226 Transfer complete ++REPLY PASS 530 Login incorrect ++</servercmd> ++</reply> ++ ++# Client-side ++<client> ++<features> ++SSL ++</features> ++<server> ++ftp ++</server> ++ <name> ++FTP STARTTLS pipelined server response ++ </name> ++<file name="log/test%TESTNUMBER.txt"> ++data ++ to ++ see ++that FTPS ++works ++ so does it? ++</file> ++ <command> ++--ssl --ftp-ssl-control ftp://%HOSTIP:%FTPPORT/%TESTNUMBER -T log/test%TESTNUMBER.txt -u user:secret -P %CLIENTIP ++</command> ++</client> ++ ++# Verify data after the test has been "shot" ++<verify> ++# 8 is CURLE_WEIRD_SERVER_REPLY ++<errorcode> ++8 ++</errorcode> ++<protocol> ++AUTH SSL ++</protocol> ++</verify> ++</testcase> +-- +2.25.1 + |