From b098174f8c72857d3af25374bc1770b39d2d5907 Mon Sep 17 00:00:00 2001 From: Remi Collet Date: Tue, 29 Sep 2020 11:07:05 +0200 Subject: Core: Fix #79699 PHP parses encoded cookie names so malicious `__Host-` cookies can be sent CVE-2020-7070 --- php-bug79699.patch | 142 +++++++++++++++++++++++++++++++++++++++++++++++++++++ php.spec | 14 +++--- 2 files changed, 150 insertions(+), 6 deletions(-) create mode 100644 php-bug79699.patch diff --git a/php-bug79699.patch b/php-bug79699.patch new file mode 100644 index 0000000..b37cbbf --- /dev/null +++ b/php-bug79699.patch @@ -0,0 +1,142 @@ +From 33a0a05b0995907eb1b2b922676ab765ac6fcac2 Mon Sep 17 00:00:00 2001 +From: Stanislav Malyshev +Date: Sun, 20 Sep 2020 18:08:55 -0700 +Subject: [PATCH] Do not decode cookie names anymore + +(cherry picked from commit 6559fe912661ca5ce5f0eeeb591d928451428ed0) +--- + main/php_variables.c | 8 ++++++-- + tests/basic/022.phpt | 10 +++++++--- + tests/basic/023.phpt | 4 +++- + tests/basic/bug79699.phpt | 22 ++++++++++++++++++++++ + 4 files changed, 38 insertions(+), 6 deletions(-) + create mode 100644 tests/basic/bug79699.phpt + +diff --git a/main/php_variables.c b/main/php_variables.c +index d3cfb7f737..50ecc663bd 100644 +--- a/main/php_variables.c ++++ b/main/php_variables.c +@@ -464,7 +464,9 @@ SAPI_API SAPI_TREAT_DATA_FUNC(php_default_treat_data) + size_t new_val_len; + + *val++ = '\0'; +- php_url_decode(var, strlen(var)); ++ if (arg != PARSE_COOKIE) { ++ php_url_decode(var, strlen(var)); ++ } + val_len = php_url_decode(val, strlen(val)); + val = estrndup(val, val_len); + if (sapi_module.input_filter(arg, var, &val, val_len, &new_val_len)) { +@@ -475,7 +477,9 @@ SAPI_API SAPI_TREAT_DATA_FUNC(php_default_treat_data) + size_t val_len; + size_t new_val_len; + +- php_url_decode(var, strlen(var)); ++ if (arg != PARSE_COOKIE) { ++ php_url_decode(var, strlen(var)); ++ } + val_len = 0; + val = estrndup("", val_len); + if (sapi_module.input_filter(arg, var, &val, val_len, &new_val_len)) { +diff --git a/tests/basic/022.phpt b/tests/basic/022.phpt +index 0ab70d4be7..bd1db13701 100644 +--- a/tests/basic/022.phpt ++++ b/tests/basic/022.phpt +@@ -10,7 +10,7 @@ cookie1=val1 ; cookie2=val2%20; cookie3=val 3.; cookie 4= value 4 %3B; cookie1= + var_dump($_COOKIE); + ?> + --EXPECT-- +-array(10) { ++array(12) { + ["cookie1"]=> + string(6) "val1 " + ["cookie2"]=> +@@ -19,11 +19,15 @@ array(10) { + string(6) "val 3." + ["cookie_4"]=> + string(10) " value 4 ;" ++ ["%20cookie1"]=> ++ string(6) "ignore" ++ ["+cookie1"]=> ++ string(6) "ignore" + ["cookie__5"]=> + string(7) " value" +- ["cookie_6"]=> ++ ["cookie%206"]=> + string(3) "þæö" +- ["cookie_7"]=> ++ ["cookie+7"]=> + string(0) "" + ["$cookie_8"]=> + string(0) "" +diff --git a/tests/basic/023.phpt b/tests/basic/023.phpt +index ca5f1dcfbb..0e2e0ac669 100644 +--- a/tests/basic/023.phpt ++++ b/tests/basic/023.phpt +@@ -10,9 +10,11 @@ c o o k i e=value; c o o k i e= v a l u e ;;c%20o+o k+i%20e=v;name="value","valu + var_dump($_COOKIE); + ?> + --EXPECT-- +-array(3) { ++array(4) { + ["c_o_o_k_i_e"]=> + string(5) "value" ++ ["c%20o+o_k+i%20e"]=> ++ string(1) "v" + ["name"]=> + string(24) ""value","value",UEhQIQ==" + ["UEhQIQ"]=> +diff --git a/tests/basic/bug79699.phpt b/tests/basic/bug79699.phpt +new file mode 100644 +index 0000000000..fc3d3fedb0 +--- /dev/null ++++ b/tests/basic/bug79699.phpt +@@ -0,0 +1,22 @@ ++--TEST-- ++Cookies Security Bug ++--INI-- ++max_input_vars=1000 ++filter.default=unsafe_raw ++--COOKIE-- ++__%48ost-evil=evil; __Host-evil=good; %66oo=baz;foo=bar ++--FILE-- ++ ++--EXPECT-- ++array(4) { ++ ["__%48ost-evil"]=> ++ string(4) "evil" ++ ["__Host-evil"]=> ++ string(4) "good" ++ ["%66oo"]=> ++ string(3) "baz" ++ ["foo"]=> ++ string(3) "bar" ++} +From 4248ab3d8ef089f23b93cdf979ce7a5690f8bf9d Mon Sep 17 00:00:00 2001 +From: Remi Collet +Date: Tue, 29 Sep 2020 09:11:38 +0200 +Subject: [PATCH] NEWS + +--- + NEWS | 6 ++++++ + 1 file changed, 6 insertions(+) + +diff --git a/NEWS b/NEWS +index d826960c11..47848d24b7 100644 +--- a/NEWS ++++ b/NEWS +@@ -1,6 +1,12 @@ + PHP NEWS + ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| + ++Backported from 7.2.34 ++ ++- Core: ++ . Fixed bug #79699 (PHP parses encoded cookie names so malicious `__Host-` ++ cookies can be sent). (CVE-2020-7070) (Stas) ++ + Backported from 7.2.33 + + - Core: diff --git a/php.spec b/php.spec index 6e3c4d4..da48921 100644 --- a/php.spec +++ b/php.spec @@ -86,12 +86,7 @@ # Optional components; pass "--with mssql" etc to rpmbuild. %global with_oci8 %{?_with_oci8:1}%{!?_with_oci8:0} %global with_imap 1 -# until firebird available in EPEL -%if 0%{?rhel} == 8 -%global with_interbase 0 -%else %global with_interbase 1 -%endif %global with_mcrypt 1 %global with_freetds 1 %global with_tidy 1 @@ -146,7 +141,7 @@ Summary: PHP scripting language for creating dynamic web sites Name: %{?scl_prefix}php Version: %{upver}%{?rcver:~%{rcver}} -Release: 22%{?dist} +Release: 23%{?dist} # All files licensed under PHP version 3.01, except # Zend is licensed under Zend # TSRM is licensed under BSD @@ -256,6 +251,7 @@ Patch242: php-bug78875.patch Patch243: php-bug78876.patch Patch244: php-bug79797.patch Patch245: php-bug79877.patch +Patch246: php-bug79699.patch # Fixes for tests (300+) # Factory is droped from system tzdata @@ -1044,6 +1040,7 @@ sed -e 's/php-devel/%{?scl_prefix}php-devel/' -i scripts/phpize.in %patch243 -p1 -b .bug78876 %patch244 -p1 -b .bug79797 %patch245 -p1 -b .bug79877 +%patch246 -p1 -b .bug79699 : --------------------------- #exit 1 @@ -2002,6 +1999,11 @@ EOF %changelog +* Tue Sep 29 2020 Remi Collet - 7.0.33-23 +- Core: + Fix #79699 PHP parses encoded cookie names so malicious `__Host-` cookies can be sent + CVE-2020-7070 + * Tue Aug 4 2020 Remi Collet - 7.0.33-22 - Core: Fix #79877 getimagesize function silently truncates after a null byte -- cgit