From: Archana Polampalli <archana.polampa...@windriver.com> This flaw makes curl overflow a heap based buffer in the SOCKS5 proxy handshake.
Signed-off-by: Archana Polampalli <archana.polampa...@windriver.com> --- .../curl/curl/CVE-2023-38545.patch | 133 ++++++++++++++++++ meta/recipes-support/curl/curl_8.0.1.bb | 1 + 2 files changed, 134 insertions(+) create mode 100644 meta/recipes-support/curl/curl/CVE-2023-38545.patch diff --git a/meta/recipes-support/curl/curl/CVE-2023-38545.patch b/meta/recipes-support/curl/curl/CVE-2023-38545.patch new file mode 100644 index 0000000000..b90677fa5f --- /dev/null +++ b/meta/recipes-support/curl/curl/CVE-2023-38545.patch @@ -0,0 +1,133 @@ +From fb4415d8aee6c1045be932a34fe6107c2f5ed147 Mon Sep 17 00:00:00 2001 +From: Jay Satiro <raysat...@yahoo.com> +Date: Wed, 11 Oct 2023 07:34:19 +0200 +Subject: [PATCH] socks: return error if hostname too long for remote resolve + +Prior to this change the state machine attempted to change the remote +resolve to a local resolve if the hostname was longer than 255 +characters. Unfortunately that did not work as intended and caused a +security issue. + +Bug: https://curl.se/docs/CVE-2023-38545.html + +Upstream-Status: Backport [https://github.com/curl/curl/commit/fb4415d8aee6c1045be932a34fe6107c2f5ed147] +CVE: CVE-2023-38545 +Signed-off-by: Archana Polampalli <archana.polampa...@windriver.com> +--- + lib/socks.c | 8 +++--- + tests/data/Makefile.inc | 2 +- + tests/data/test722 | 64 +++++++++++++++++++++++++++++++++++++++++ + 3 files changed, 69 insertions(+), 5 deletions(-) + create mode 100644 tests/data/test722 + +diff --git a/lib/socks.c b/lib/socks.c +index 95c2b00..8cf694d 100644 +--- a/lib/socks.c ++++ b/lib/socks.c +@@ -588,9 +588,9 @@ static CURLproxycode do_SOCKS5(struct Curl_cfilter *cf, + + /* RFC1928 chapter 5 specifies max 255 chars for domain name in packet */ + if(!socks5_resolve_local && hostname_len > 255) { +- infof(data, "SOCKS5: server resolving disabled for hostnames of " +- "length > 255 [actual len=%zu]", hostname_len); +- socks5_resolve_local = TRUE; ++ failf(data, "SOCKS5: the destination hostname is too long to be " ++ "resolved remotely by the proxy."); ++ return CURLPX_LONG_HOSTNAME; + } + + if(auth & ~(CURLAUTH_BASIC | CURLAUTH_GSSAPI)) +@@ -904,7 +904,7 @@ static CURLproxycode do_SOCKS5(struct Curl_cfilter *cf, + } + else { + socksreq[len++] = 3; +- socksreq[len++] = (char) hostname_len; /* one byte address length */ ++ socksreq[len++] = (unsigned char) hostname_len; /* one byte length */ + memcpy(&socksreq[len], sx->hostname, hostname_len); /* w/o NULL */ + len += hostname_len; + } +diff --git a/tests/data/Makefile.inc b/tests/data/Makefile.inc +index 7ed03a2..643c9fe 100644 +--- a/tests/data/Makefile.inc ++++ b/tests/data/Makefile.inc +@@ -100,7 +100,7 @@ test679 test680 test681 test682 test683 test684 test685 test686 \ + \ + test700 test701 test702 test703 test704 test705 test706 test707 test708 \ + test709 test710 test711 test712 test713 test714 test715 test716 test717 \ +-test718 test719 test720 test721 \ ++test718 test719 test720 test721 test722 \ + \ + test800 test801 test802 test803 test804 test805 test806 test807 test808 \ + test809 test810 test811 test812 test813 test814 test815 test816 test817 \ +diff --git a/tests/data/test722 b/tests/data/test722 +new file mode 100644 +index 0000000..05bcf28 +--- /dev/null ++++ b/tests/data/test722 +@@ -0,0 +1,64 @@ ++<testcase> ++<info> ++<keywords> ++HTTP ++HTTP GET ++SOCKS5 ++SOCKS5h ++followlocation ++</keywords> ++</info> ++ ++# ++# Server-side ++<reply> ++# The hostname in this redirect is 256 characters and too long (> 255) for ++# SOCKS5 remote resolve. curl must return error CURLE_PROXY in this case. ++<data> ++HTTP/1.1 301 Moved Permanently ++Location: http://AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA/ ++Content-Length: 0 ++Connection: close ++ ++</data> ++</reply> ++ ++# ++# Client-side ++<client> ++<features> ++proxy ++</features> ++<server> ++http ++socks5 ++</server> ++ <name> ++SOCKS5h with HTTP redirect to hostname too long ++ </name> ++ <command> ++--no-progress-meter --location --proxy socks5h://%HOSTIP:%SOCKSPORT http://%HOSTIP:%HTTPPORT/%TESTNUMBER ++</command> ++</client> ++ ++# ++# Verify data after the test has been "shot" ++<verify> ++<protocol crlf="yes"> ++GET /%TESTNUMBER HTTP/1.1 ++Host: %HOSTIP:%HTTPPORT ++User-Agent: curl/%VERSION ++Accept: */* ++ ++</protocol> ++<errorcode> ++97 ++</errorcode> ++# the error message is verified because error code CURLE_PROXY (97) may be ++# returned for any number of reasons and we need to make sure it is ++# specifically for the reason below so that we know the check is working. ++<stderr mode="text"> ++curl: (97) SOCKS5: the destination hostname is too long to be resolved remotely by the proxy. ++</stderr> ++</verify> ++</testcase> +-- +2.40.0 diff --git a/meta/recipes-support/curl/curl_8.0.1.bb b/meta/recipes-support/curl/curl_8.0.1.bb index 708f622fe1..bdffe7be34 100644 --- a/meta/recipes-support/curl/curl_8.0.1.bb +++ b/meta/recipes-support/curl/curl_8.0.1.bb @@ -19,6 +19,7 @@ SRC_URI = " \ file://CVE-2023-28321.patch \ file://CVE-2023-32001.patch \ file://CVE-2023-28320-fol1.patch \ + file://CVE-2023-38545.patch \ " SRC_URI[sha256sum] = "0a381cd82f4d00a9a334438b8ca239afea5bfefcfa9a1025f2bf118e79e0b5f0" -- 2.40.0
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