diff options
Diffstat (limited to 'php-cve-2024-8925.patch')
| -rw-r--r-- | php-cve-2024-8925.patch | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/php-cve-2024-8925.patch b/php-cve-2024-8925.patch new file mode 100644 index 0000000..7853deb --- /dev/null +++ b/php-cve-2024-8925.patch @@ -0,0 +1,188 @@ +From 2b0daf421c162376892832588eccdfa9a286ed09 Mon Sep 17 00:00:00 2001 +From: Arnaud Le Blanc <arnaud.lb@gmail.com> +Date: Mon, 9 Sep 2024 15:22:07 +0200 +Subject: [PATCH 3/8] Fix GHSA-9pqp-7h25-4f32 + +multipart/form-data boundaries larger than the read buffer result in erroneous +parsing, which violates data integrity. + +Limit boundary size, as allowed by RFC 1521: + + Encapsulation boundaries [...] must be no longer than 70 characters, not + counting the two leading hyphens. + +We correctly parse payloads with boundaries of length up to +FILLUNIT-strlen("\r\n--") bytes, so allow this for BC. + +(cherry picked from commit 19b49258d0c5a61398d395d8afde1123e8d161e0) +--- + main/rfc1867.c | 7 ++ + tests/basic/GHSA-9pqp-7h25-4f32.inc | 3 + + tests/basic/GHSA-9pqp-7h25-4f32.phpt | 100 +++++++++++++++++++++++++++ + 3 files changed, 110 insertions(+) + create mode 100644 tests/basic/GHSA-9pqp-7h25-4f32.inc + create mode 100644 tests/basic/GHSA-9pqp-7h25-4f32.phpt + +diff --git a/main/rfc1867.c b/main/rfc1867.c +index 3086e8da3db..eafe6a67d2e 100644 +--- a/main/rfc1867.c ++++ b/main/rfc1867.c +@@ -752,6 +752,13 @@ SAPI_API SAPI_POST_HANDLER_FUNC(rfc1867_post_handler) /* {{{ */ + boundary_len = boundary_end-boundary; + } + ++ /* Boundaries larger than FILLUNIT-strlen("\r\n--") characters lead to ++ * erroneous parsing */ ++ if (boundary_len > FILLUNIT-strlen("\r\n--")) { ++ sapi_module.sapi_error(E_WARNING, "Boundary too large in multipart/form-data POST data"); ++ return; ++ } ++ + /* Initialize the buffer */ + if (!(mbuff = multipart_buffer_new(boundary, boundary_len))) { + sapi_module.sapi_error(E_WARNING, "Unable to initialize the input buffer"); +diff --git a/tests/basic/GHSA-9pqp-7h25-4f32.inc b/tests/basic/GHSA-9pqp-7h25-4f32.inc +new file mode 100644 +index 00000000000..adf72a361a2 +--- /dev/null ++++ b/tests/basic/GHSA-9pqp-7h25-4f32.inc +@@ -0,0 +1,3 @@ ++<?php ++print "Hello world\n"; ++var_dump($_POST); +diff --git a/tests/basic/GHSA-9pqp-7h25-4f32.phpt b/tests/basic/GHSA-9pqp-7h25-4f32.phpt +new file mode 100644 +index 00000000000..af819163705 +--- /dev/null ++++ b/tests/basic/GHSA-9pqp-7h25-4f32.phpt +@@ -0,0 +1,100 @@ ++--TEST-- ++GHSA-9pqp-7h25-4f32 ++--SKIPIF-- ++<?php ++if (!getenv('TEST_PHP_CGI_EXECUTABLE')) { ++ die("skip php-cgi not available"); ++} ++?> ++--FILE-- ++<?php ++ ++const FILLUNIT = 5 * 1024; ++ ++function test($boundaryLen) { ++ printf("Boundary len: %d\n", $boundaryLen); ++ ++ $cmd = [ ++ getenv('TEST_PHP_CGI_EXECUTABLE'), ++ '-C', ++ '-n', ++ __DIR__ . '/GHSA-9pqp-7h25-4f32.inc', ++ ]; ++ ++ $boundary = str_repeat('A', $boundaryLen); ++ $body = "" ++ . "--$boundary\r\n" ++ . "Content-Disposition: form-data; name=\"koko\"\r\n" ++ . "\r\n" ++ . "BBB\r\n--" . substr($boundary, 0, -1) . "CCC\r\n" ++ . "--$boundary--\r\n" ++ ; ++ ++ $env = array_merge($_ENV, [ ++ 'REDIRECT_STATUS' => '1', ++ 'CONTENT_TYPE' => "multipart/form-data; boundary=$boundary", ++ 'CONTENT_LENGTH' => strlen($body), ++ 'REQUEST_METHOD' => 'POST', ++ 'SCRIPT_FILENAME' => __DIR__ . '/GHSA-9pqp-7h25-4f32.inc', ++ ]); ++ ++ $spec = [ ++ 0 => ['pipe', 'r'], ++ 1 => STDOUT, ++ 2 => STDOUT, ++ ]; ++ ++ $pipes = []; ++ ++ print "Starting...\n"; ++ ++ $handle = proc_open($cmd, $spec, $pipes, getcwd(), $env); ++ ++ fwrite($pipes[0], $body); ++ ++ $status = proc_close($handle); ++ ++ print "\n"; ++} ++ ++for ($offset = -1; $offset <= 1; $offset++) { ++ test(FILLUNIT - strlen("\r\n--") + $offset); ++} ++ ++?> ++--EXPECTF-- ++Boundary len: 5115 ++Starting... ++X-Powered-By: %s ++Content-type: text/html; charset=UTF-8 ++ ++Hello world ++array(1) { ++ ["koko"]=> ++ string(5124) "BBB ++--AAA%sCCC" ++} ++ ++Boundary len: 5116 ++Starting... ++X-Powered-By: %s ++Content-type: text/html; charset=UTF-8 ++ ++Hello world ++array(1) { ++ ["koko"]=> ++ string(5125) "BBB ++--AAA%sCCC" ++} ++ ++Boundary len: 5117 ++Starting... ++X-Powered-By: %s ++Content-type: text/html; charset=UTF-8 ++ ++<br /> ++<b>Warning</b>: Boundary too large in multipart/form-data POST data in <b>Unknown</b> on line <b>0</b><br /> ++Hello world ++array(0) { ++} ++ +-- +2.46.1 + +From c75683864f6e4188439e8ca2adbb05824918be12 Mon Sep 17 00:00:00 2001 +From: Jakub Zelenka <bukka@php.net> +Date: Mon, 23 Sep 2024 18:54:31 +0100 +Subject: [PATCH 7/8] Skip GHSA-9pqp-7h25-4f32 test on Windows + +(cherry picked from commit c70e25630832fa10d421328eed2b8e1a36af7a64) +--- + tests/basic/GHSA-9pqp-7h25-4f32.phpt | 3 +++ + 1 file changed, 3 insertions(+) + +diff --git a/tests/basic/GHSA-9pqp-7h25-4f32.phpt b/tests/basic/GHSA-9pqp-7h25-4f32.phpt +index af819163705..29bcb6557d5 100644 +--- a/tests/basic/GHSA-9pqp-7h25-4f32.phpt ++++ b/tests/basic/GHSA-9pqp-7h25-4f32.phpt +@@ -5,6 +5,9 @@ GHSA-9pqp-7h25-4f32 + if (!getenv('TEST_PHP_CGI_EXECUTABLE')) { + die("skip php-cgi not available"); + } ++if (substr(PHP_OS, 0, 3) == 'WIN') { ++ die("skip not for Windows in CI - probably resource issue"); ++} + ?> + --FILE-- + <?php +-- +2.46.1 + |