diff options
Diffstat (limited to 'php-cve-2024-8926.patch')
| -rw-r--r-- | php-cve-2024-8926.patch | 203 |
1 files changed, 203 insertions, 0 deletions
diff --git a/php-cve-2024-8926.patch b/php-cve-2024-8926.patch new file mode 100644 index 0000000..9c1a703 --- /dev/null +++ b/php-cve-2024-8926.patch @@ -0,0 +1,203 @@ +From 3ee3a1f5c72921e99da8a8da096c0d11f89735d1 Mon Sep 17 00:00:00 2001 +From: Jan Ehrhardt <github@ehrhardt.nl> +Date: Wed, 5 Jun 2024 20:27:51 +0200 +Subject: [PATCH 1/8] Fix GHSA-3qgc-jrrr-25jv + +--- + sapi/cgi/cgi_main.c | 23 ++++++++++++++- + sapi/cgi/tests/ghsa-3qgc-jrrr-25jv.phpt | 38 +++++++++++++++++++++++++ + 2 files changed, 60 insertions(+), 1 deletion(-) + create mode 100644 sapi/cgi/tests/ghsa-3qgc-jrrr-25jv.phpt + +diff --git a/sapi/cgi/cgi_main.c b/sapi/cgi/cgi_main.c +index 37f8eac6e0..47fbc410bc 100644 +--- a/sapi/cgi/cgi_main.c ++++ b/sapi/cgi/cgi_main.c +@@ -1835,8 +1835,13 @@ int main(int argc, char *argv[]) + } + } + ++ /* Apache CGI will pass the query string to the command line if it doesn't contain a '='. ++ * This can create an issue where a malicious request can pass command line arguments to ++ * the executable. Ideally we skip argument parsing when we're in cgi or fastcgi mode, ++ * but that breaks PHP scripts on Linux with a hashbang: `#!/php-cgi -d option=value`. ++ * Therefore, this code only prevents passing arguments if the query string starts with a '-'. ++ * Similarly, scripts spawned in subprocesses on Windows may have the same issue. */ + if((query_string = getenv("QUERY_STRING")) != NULL && strchr(query_string, '=') == NULL) { +- /* we've got query string that has no = - apache CGI will pass it to command line */ + unsigned char *p; + decoded_query_string = strdup(query_string); + php_url_decode(decoded_query_string, strlen(decoded_query_string)); +@@ -1846,6 +1851,22 @@ int main(int argc, char *argv[]) + if(*p == '-') { + skip_getopt = 1; + } ++ ++ /* On Windows we have to take into account the "best fit" mapping behaviour. */ ++#ifdef PHP_WIN32 ++ if (*p >= 0x80) { ++ wchar_t wide_buf[1]; ++ wide_buf[0] = *p; ++ char char_buf[4]; ++ size_t wide_buf_len = sizeof(wide_buf) / sizeof(wide_buf[0]); ++ size_t char_buf_len = sizeof(char_buf) / sizeof(char_buf[0]); ++ if (WideCharToMultiByte(CP_ACP, 0, wide_buf, wide_buf_len, char_buf, char_buf_len, NULL, NULL) == 0 ++ || char_buf[0] == '-') { ++ skip_getopt = 1; ++ } ++ } ++#endif ++ + free(decoded_query_string); + } + +diff --git a/sapi/cgi/tests/ghsa-3qgc-jrrr-25jv.phpt b/sapi/cgi/tests/ghsa-3qgc-jrrr-25jv.phpt +new file mode 100644 +index 0000000000..fd2fcdfbf8 +--- /dev/null ++++ b/sapi/cgi/tests/ghsa-3qgc-jrrr-25jv.phpt +@@ -0,0 +1,38 @@ ++--TEST-- ++GHSA-3qgc-jrrr-25jv ++--SKIPIF-- ++<?php ++include 'skipif.inc'; ++if (PHP_OS_FAMILY !== "Windows") die("skip Only for Windows"); ++ ++$codepage = trim(shell_exec("powershell Get-ItemPropertyValue HKLM:\\SYSTEM\\CurrentControlSet\\Control\\Nls\\CodePage ACP")); ++if ($codepage !== '932' && $codepage !== '936' && $codepage !== '950') die("skip Wrong codepage"); ++?> ++--FILE-- ++<?php ++include 'include.inc'; ++ ++$filename = __DIR__."/GHSA-3qgc-jrrr-25jv_tmp.php"; ++$script = '<?php echo "hello "; echo "world"; ?>'; ++file_put_contents($filename, $script); ++ ++$php = get_cgi_path(); ++reset_env_vars(); ++ ++putenv("SERVER_NAME=Test"); ++putenv("SCRIPT_FILENAME=$filename"); ++putenv("QUERY_STRING=%ads"); ++putenv("REDIRECT_STATUS=1"); ++ ++passthru("$php -s"); ++ ++?> ++--CLEAN-- ++<?php ++@unlink(__DIR__."/GHSA-3qgc-jrrr-25jv_tmp.php"); ++?> ++--EXPECTF-- ++X-Powered-By: PHP/%s ++Content-type: %s ++ ++hello world +-- +2.46.1 + +From 5c2e7a769bf834e9e2890919067f3efd4d605b13 Mon Sep 17 00:00:00 2001 +From: Jan Ehrhardt <github@ehrhardt.nl> +Date: Sun, 9 Jun 2024 20:11:49 +0200 +Subject: [PATCH 2/8] NEWS: Add backport from 8.1.29 + +--- + NEWS | 4 ++++ + 1 file changed, 4 insertions(+) + +diff --git a/NEWS b/NEWS +index 1075db151f..db10d85a5b 100644 +--- a/NEWS ++++ b/NEWS +@@ -3,6 +3,10 @@ PHP NEWS + + Backported from 8.1.29 + ++- CGI: ++ . Fixed bug GHSA-3qgc-jrrr-25jv (Bypass of CVE-2012-1823, Argument Injection ++ in PHP-CGI). (CVE-2024-4577) (nielsdos) ++ + - Filter: + . Fixed bug GHSA-w8qr-v226-r27w (Filter bypass in filter_var FILTER_VALIDATE_URL). + (CVE-2024-5458) (nielsdos) +-- +2.46.1 + +From 89c66773413267949de995671bfb4bd03c34fbf9 Mon Sep 17 00:00:00 2001 +From: Niels Dossche <7771979+nielsdos@users.noreply.github.com> +Date: Fri, 14 Jun 2024 19:49:22 +0200 +Subject: [PATCH 4/8] Fix GHSA-p99j-rfp4-xqvq + +It's no use trying to work around whatever the operating system and Apache +do because we'll be fighting that until eternity. +Change the skip_getopt condition such that when we're running in +CGI or FastCGI mode we always skip the argument parsing. +This is a BC break, but this seems to be the only way to get rid of this +class of issues. + +(cherry picked from commit abcfd980bfa03298792fd3aba051c78d52f10642) +(cherry picked from commit 2d2552e092b6ff32cd823692d512f126ee629842) +(cherry picked from commit 1158d06f0b20532ab7309cb20f0be843f9662e3c) +--- + sapi/cgi/cgi_main.c | 26 ++++++++------------------ + 1 file changed, 8 insertions(+), 18 deletions(-) + +diff --git a/sapi/cgi/cgi_main.c b/sapi/cgi/cgi_main.c +index 47fbc410bc..62a01d51fe 100644 +--- a/sapi/cgi/cgi_main.c ++++ b/sapi/cgi/cgi_main.c +@@ -1784,7 +1784,6 @@ int main(int argc, char *argv[]) + int status = 0; + #endif + char *query_string; +- char *decoded_query_string; + int skip_getopt = 0; + + #ifdef HAVE_SIGNAL_H +@@ -1840,10 +1839,15 @@ int main(int argc, char *argv[]) + * the executable. Ideally we skip argument parsing when we're in cgi or fastcgi mode, + * but that breaks PHP scripts on Linux with a hashbang: `#!/php-cgi -d option=value`. + * Therefore, this code only prevents passing arguments if the query string starts with a '-'. +- * Similarly, scripts spawned in subprocesses on Windows may have the same issue. */ ++ * Similarly, scripts spawned in subprocesses on Windows may have the same issue. ++ * However, Windows has lots of conversion rules and command line parsing rules that ++ * are too difficult and dangerous to reliably emulate. */ + if((query_string = getenv("QUERY_STRING")) != NULL && strchr(query_string, '=') == NULL) { ++#ifdef PHP_WIN32 ++ skip_getopt = cgi || fastcgi; ++#else + unsigned char *p; +- decoded_query_string = strdup(query_string); ++ char *decoded_query_string = strdup(query_string); + php_url_decode(decoded_query_string, strlen(decoded_query_string)); + for (p = (unsigned char *)decoded_query_string; *p && *p <= ' '; p++) { + /* skip all leading spaces */ +@@ -1852,22 +1856,8 @@ int main(int argc, char *argv[]) + skip_getopt = 1; + } + +- /* On Windows we have to take into account the "best fit" mapping behaviour. */ +-#ifdef PHP_WIN32 +- if (*p >= 0x80) { +- wchar_t wide_buf[1]; +- wide_buf[0] = *p; +- char char_buf[4]; +- size_t wide_buf_len = sizeof(wide_buf) / sizeof(wide_buf[0]); +- size_t char_buf_len = sizeof(char_buf) / sizeof(char_buf[0]); +- if (WideCharToMultiByte(CP_ACP, 0, wide_buf, wide_buf_len, char_buf, char_buf_len, NULL, NULL) == 0 +- || char_buf[0] == '-') { +- skip_getopt = 1; +- } +- } +-#endif +- + free(decoded_query_string); ++#endif + } + + while (!skip_getopt && (c = php_getopt(argc, argv, OPTIONS, &php_optarg, &php_optind, 0, 2)) != -1) { +-- +2.46.1 + |