diff options
Diffstat (limited to 'php-cve-2024-2756.patch')
| -rw-r--r-- | php-cve-2024-2756.patch | 197 |
1 files changed, 197 insertions, 0 deletions
diff --git a/php-cve-2024-2756.patch b/php-cve-2024-2756.patch new file mode 100644 index 0000000..6e13a30 --- /dev/null +++ b/php-cve-2024-2756.patch @@ -0,0 +1,197 @@ +From c213de619a532d35e8f7abe4a245433dbf21c960 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) +(cherry picked from commit 2e07a3acd7a6b53c55325b94bed97748d7697b53) +(cherry picked from commit a6c1c62a25ac23b08a86af11d68f0e2eaafc102b) +(cherry picked from commit 46b570a1e4aeb4a414898fcc09503ac388d16256) +--- + 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 0000000000..77fcb68089 +--- /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 bd59134fc9..3e0e8d767e 100644 +--- a/main/php_variables.c ++++ b/main/php_variables.c +@@ -59,6 +59,21 @@ PHPAPI void php_register_variable_safe(char *var, char *strval, size_t str_len, + php_register_variable_ex(var, &new_entry, track_vars_array); + } + ++/* 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 zend_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 1; ++ } ++ ++ 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 1; ++ } ++ ++ return 0; ++} ++ + PHPAPI void php_register_variable_ex(char *var_name, zval *val, zval *track_vars_array) + { + char *p = NULL; +@@ -109,20 +124,6 @@ PHPAPI void php_register_variable_ex(char *var_name, zval *val, zval *track_vars + } + 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_dtor(val); + free_alloca(var_orig, use_heap); +@@ -220,6 +221,12 @@ PHPAPI void php_register_variable_ex(char *var_name, zval *val, zval *track_vars + 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(&gpc_element); + } + } else { ++ if (php_is_forbidden_variable_name(index, index_len, var_name)) { ++ zval_ptr_dtor_nogc(val); ++ free_alloca(var_orig, use_heap); ++ return; ++ } ++ + /* + * According to rfc2965, more specific paths are listed above the less specific ones. + * If we encounter a duplicate cookie name, we should skip it, since it is not possible +-- +2.44.0 + +From ee591001f7a3db7405b4fa027659768c2355df6d 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 + +(cherry picked from commit 366cc249b7d54707572beb7096e8f6c65ee79719) +(cherry picked from commit dcdd49ef3bfbd8ccc778850d6a0f9b98adf625d4) +(cherry picked from commit 8642473b624f809b768180b104c013f74e3a99a0) +--- + NEWS | 6 ++++++ + 1 file changed, 6 insertions(+) + +diff --git a/NEWS b/NEWS +index 286f3df0f4..e55195bc56 100644 +--- a/NEWS ++++ b/NEWS +@@ -1,6 +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) ++ + Backported from 8.0.30 + + - Libxml: +-- +2.44.0 + |