diff options
Diffstat (limited to 'php-cve-2024-2756.patch')
| -rw-r--r-- | php-cve-2024-2756.patch | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/php-cve-2024-2756.patch b/php-cve-2024-2756.patch new file mode 100644 index 0000000..9f27189 --- /dev/null +++ b/php-cve-2024-2756.patch @@ -0,0 +1,191 @@ +From 2e07a3acd7a6b53c55325b94bed97748d7697b53 Mon Sep 17 00:00:00 2001 +From: Niels Dossche <7771979+nielsdos@users.noreply.github.com> +Date: Sun, 17 Mar 2024 21:04:47 +0100 +Subject: [PATCH 1/4] Fix GHSA-wpj3-hf5j-x4v4: __Host-/__Secure- cookie bypass + due to partial CVE-2022-31629 fix + +The check happened too early as later code paths may perform more +mangling rules. Move the check downwards right before adding the actual +variable. + +(cherry picked from commit 093c08af25fb323efa0c8e6154aa9fdeae3d3b53) +--- + ext/standard/tests/ghsa-wpj3-hf5j-x4v4.phpt | 63 +++++++++++++++++++++ + main/php_variables.c | 41 +++++++++----- + 2 files changed, 90 insertions(+), 14 deletions(-) + create mode 100644 ext/standard/tests/ghsa-wpj3-hf5j-x4v4.phpt + +diff --git a/ext/standard/tests/ghsa-wpj3-hf5j-x4v4.phpt b/ext/standard/tests/ghsa-wpj3-hf5j-x4v4.phpt +new file mode 100644 +index 00000000000..77fcb680894 +--- /dev/null ++++ b/ext/standard/tests/ghsa-wpj3-hf5j-x4v4.phpt +@@ -0,0 +1,63 @@ ++--TEST-- ++ghsa-wpj3-hf5j-x4v4 (__Host-/__Secure- cookie bypass due to partial CVE-2022-31629 fix) ++--COOKIE-- ++..Host-test=ignore_1; ++._Host-test=ignore_2; ++.[Host-test=ignore_3; ++_.Host-test=ignore_4; ++__Host-test=ignore_5; ++_[Host-test=ignore_6; ++[.Host-test=ignore_7; ++[_Host-test=ignore_8; ++[[Host-test=ignore_9; ++..Host-test[]=ignore_10; ++._Host-test[]=ignore_11; ++.[Host-test[]=ignore_12; ++_.Host-test[]=ignore_13; ++__Host-test[]=legitimate_14; ++_[Host-test[]=legitimate_15; ++[.Host-test[]=ignore_16; ++[_Host-test[]=ignore_17; ++[[Host-test[]=ignore_18; ++..Secure-test=ignore_1; ++._Secure-test=ignore_2; ++.[Secure-test=ignore_3; ++_.Secure-test=ignore_4; ++__Secure-test=ignore_5; ++_[Secure-test=ignore_6; ++[.Secure-test=ignore_7; ++[_Secure-test=ignore_8; ++[[Secure-test=ignore_9; ++..Secure-test[]=ignore_10; ++._Secure-test[]=ignore_11; ++.[Secure-test[]=ignore_12; ++_.Secure-test[]=ignore_13; ++__Secure-test[]=legitimate_14; ++_[Secure-test[]=legitimate_15; ++[.Secure-test[]=ignore_16; ++[_Secure-test[]=ignore_17; ++[[Secure-test[]=ignore_18; ++--FILE-- ++<?php ++var_dump($_COOKIE); ++?> ++--EXPECT-- ++array(3) { ++ ["__Host-test"]=> ++ array(1) { ++ [0]=> ++ string(13) "legitimate_14" ++ } ++ ["_"]=> ++ array(2) { ++ ["Host-test["]=> ++ string(13) "legitimate_15" ++ ["Secure-test["]=> ++ string(13) "legitimate_15" ++ } ++ ["__Secure-test"]=> ++ array(1) { ++ [0]=> ++ string(13) "legitimate_14" ++ } ++} +diff --git a/main/php_variables.c b/main/php_variables.c +index 27a9ad089e7..dc888bdfc64 100644 +--- a/main/php_variables.c ++++ b/main/php_variables.c +@@ -54,6 +54,21 @@ static zend_always_inline void php_register_variable_quick(const char *name, siz + zend_string_release_ex(key, 0); + } + ++/* Discard variable if mangling made it start with __Host-, where pre-mangling it did not start with __Host- ++ * Discard variable if mangling made it start with __Secure-, where pre-mangling it did not start with __Secure- */ ++static bool php_is_forbidden_variable_name(const char *mangled_name, size_t mangled_name_len, const char *pre_mangled_name) ++{ ++ if (mangled_name_len >= sizeof("__Host-")-1 && strncmp(mangled_name, "__Host-", sizeof("__Host-")-1) == 0 && strncmp(pre_mangled_name, "__Host-", sizeof("__Host-")-1) != 0) { ++ return true; ++ } ++ ++ if (mangled_name_len >= sizeof("__Secure-")-1 && strncmp(mangled_name, "__Secure-", sizeof("__Secure-")-1) == 0 && strncmp(pre_mangled_name, "__Secure-", sizeof("__Secure-")-1) != 0) { ++ return true; ++ } ++ ++ return false; ++} ++ + PHPAPI void php_register_variable_ex(const char *var_name, zval *val, zval *track_vars_array) + { + char *p = NULL; +@@ -104,20 +119,6 @@ PHPAPI void php_register_variable_ex(const char *var_name, zval *val, zval *trac + } + var_len = p - var; + +- /* Discard variable if mangling made it start with __Host-, where pre-mangling it did not start with __Host- */ +- if (strncmp(var, "__Host-", sizeof("__Host-")-1) == 0 && strncmp(var_name, "__Host-", sizeof("__Host-")-1) != 0) { +- zval_ptr_dtor_nogc(val); +- free_alloca(var_orig, use_heap); +- return; +- } +- +- /* Discard variable if mangling made it start with __Secure-, where pre-mangling it did not start with __Secure- */ +- if (strncmp(var, "__Secure-", sizeof("__Secure-")-1) == 0 && strncmp(var_name, "__Secure-", sizeof("__Secure-")-1) != 0) { +- zval_ptr_dtor_nogc(val); +- free_alloca(var_orig, use_heap); +- return; +- } +- + if (var_len==0) { /* empty variable name, or variable name with a space in it */ + zval_ptr_dtor_nogc(val); + free_alloca(var_orig, use_heap); +@@ -221,6 +222,12 @@ PHPAPI void php_register_variable_ex(const char *var_name, zval *val, zval *trac + return; + } + } else { ++ if (php_is_forbidden_variable_name(index, index_len, var_name)) { ++ zval_ptr_dtor_nogc(val); ++ free_alloca(var_orig, use_heap); ++ return; ++ } ++ + gpc_element_p = zend_symtable_str_find(symtable1, index, index_len); + if (!gpc_element_p) { + zval tmp; +@@ -258,6 +265,12 @@ plain_var: + zval_ptr_dtor_nogc(val); + } + } else { ++ if (php_is_forbidden_variable_name(index, index_len, var_name)) { ++ zval_ptr_dtor_nogc(val); ++ free_alloca(var_orig, use_heap); ++ return; ++ } ++ + zend_ulong idx; + + /* +-- +2.44.0 + +From 366cc249b7d54707572beb7096e8f6c65ee79719 Mon Sep 17 00:00:00 2001 +From: Remi Collet <remi@remirepo.net> +Date: Wed, 10 Apr 2024 08:59:32 +0200 +Subject: [PATCH 2/4] NEWS + +--- + NEWS | 7 +++++++ + 1 file changed, 7 insertions(+) + +diff --git a/NEWS b/NEWS +index 8147a7e517c..14fda3a58b9 100644 +--- a/NEWS ++++ b/NEWS +@@ -1,5 +1,12 @@ + PHP NEWS + ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| ++ ++Backported from 8.1.28 ++ ++- Standard: ++ . Fixed bug GHSA-wpj3-hf5j-x4v4 (__Host-/__Secure- cookie bypass due to ++ partial CVE-2022-31629 fix). (CVE-2024-2756) (nielsdos) ++ + 03 Aug 2023, PHP 8.0.30 + + - Libxml: +-- +2.44.0 + |