From 8dab7d0bb9c4133a082c70403af0c6a4c1b0025b Mon Sep 17 00:00:00 2001
From: Jakub Zelenka <bukka@php.net>
Date: Fri, 8 Nov 2024 23:43:47 +0100
Subject: [PATCH 4/9] Fix GHSA-c5f2-jwm7-mmq2: stream HTTP fulluri CRLF
 injection

(cherry picked from commit 426a6d4539ebee34879ac5de857036bb6ff0e732)
(cherry picked from commit bc1f192102dd8cbda028e40aa31604c4885d387c)
(cherry picked from commit 8d130e16fbfda7d154fedfa0f1ff1d5ad5e26815)
(cherry picked from commit 494de65139592da0e5e5b6fdf198c2f9c762f4d6)
(cherry picked from commit dcb89ed9d0217510f3906ce0c517f704e6bd80dc)
(cherry picked from commit 11787051a17d2fcea427cd66c3fcc5e99ab94a03)
(cherry picked from commit 59bfc165234a2bb79916c340cd98d011deedc995)
---
 ext/standard/http_fopen_wrapper.c             | 18 ++++++++----
 .../tests/http/ghsa-c5f2-jwm7-mmq2.phpt       | 28 +++++++++++++++++++
 2 files changed, 40 insertions(+), 6 deletions(-)
 create mode 100644 ext/standard/tests/http/ghsa-c5f2-jwm7-mmq2.phpt

diff --git a/ext/standard/http_fopen_wrapper.c b/ext/standard/http_fopen_wrapper.c
index ab10ed11b6..b1a13ee1cf 100644
--- a/ext/standard/http_fopen_wrapper.c
+++ b/ext/standard/http_fopen_wrapper.c
@@ -182,6 +182,11 @@ php_stream *php_stream_url_wrap_http_ex(php_stream_wrapper *wrapper,
 			return NULL;
 		}
 
+		/* Should we send the entire path in the request line, default to no. */
+		if (context && (tmpzval = php_stream_context_get_option(context, "http", "request_fulluri")) != NULL) {
+			request_fulluri = zend_is_true(tmpzval);
+		}
+
 		use_ssl = resource->scheme && (strlen(resource->scheme) > 4) && resource->scheme[4] == 's';
 		/* choose default ports */
 		if (use_ssl && resource->port == 0)
@@ -201,6 +206,13 @@ php_stream *php_stream_url_wrap_http_ex(php_stream_wrapper *wrapper,
 		}
 	}
 
+	if (request_fulluri && (strchr(path, '\n') != NULL || strchr(path, '\r') != NULL)) {
+		php_stream_wrapper_log_error(wrapper, options, "HTTP wrapper full URI path does not allow CR or LF characters");
+		php_url_free(resource);
+		efree(transport_string);
+		return NULL;
+	}
+
 	if (context && (tmpzval = php_stream_context_get_option(context, wrapper->wops->label, "timeout")) != NULL) {
 		double d = zval_get_double(tmpzval);
 #ifndef PHP_WIN32
@@ -387,12 +399,6 @@ finish:
 		strncpy(scratch, "GET ", scratch_len);
 	}
 
-	/* Should we send the entire path in the request line, default to no. */
-	if (!request_fulluri && context &&
-		(tmpzval = php_stream_context_get_option(context, "http", "request_fulluri")) != NULL) {
-		request_fulluri = zend_is_true(tmpzval);
-	}
-
 	if (request_fulluri) {
 		/* Ask for everything */
 		strcat(scratch, path);
diff --git a/ext/standard/tests/http/ghsa-c5f2-jwm7-mmq2.phpt b/ext/standard/tests/http/ghsa-c5f2-jwm7-mmq2.phpt
new file mode 100644
index 0000000000..6e68f67654
--- /dev/null
+++ b/ext/standard/tests/http/ghsa-c5f2-jwm7-mmq2.phpt
@@ -0,0 +1,28 @@
+--TEST--
+GHSA-c5f2-jwm7-mmq2 (Configuring a proxy in a stream context might allow for CRLF injection in URIs)
+--INI--
+allow_url_fopen=1
+--CONFLICTS--
+server
+--FILE--
+<?php
+$serverCode = <<<'CODE'
+echo $_SERVER['REQUEST_URI'];
+CODE;
+
+include __DIR__."/../../../../sapi/cli/tests/php_cli_server.inc";
+php_cli_server_start($serverCode, null);
+
+$host = PHP_CLI_SERVER_ADDRESS;
+$userinput = "index.php HTTP/1.1\r\nHost: $host\r\n\r\nGET /index2.php HTTP/1.1\r\nHost: $host\r\n\r\nGET /index.php";
+$context = stream_context_create(['http' => ['proxy' => 'tcp://' . $host, 'request_fulluri' => true]]);
+echo file_get_contents("http://$host/$userinput", false, $context);
+?>
+--EXPECTF--
+Warning: file_get_contents(http://localhost:%d/index.php HTTP/1.1
+Host: localhost:%d
+
+GET /index2.php HTTP/1.1
+Host: localhost:%d
+
+GET /index.php): failed to open stream: HTTP wrapper full URI path does not allow CR or LF characters in %s on line %d
-- 
2.47.0