From dd857d5102875f14dcbd964c3c1cbe596fd6f0f9 Mon Sep 17 00:00:00 2001 From: Remi Collet Date: Wed, 3 Feb 2021 09:32:19 +0100 Subject: Fix #80672 Null Dereference in SoapClient CVE-2021-21702 better fix for #77423 --- php-bug77423.patch | 269 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 269 insertions(+) (limited to 'php-bug77423.patch') diff --git a/php-bug77423.patch b/php-bug77423.patch index ced3680..5d61bc1 100644 --- a/php-bug77423.patch +++ b/php-bug77423.patch @@ -194,3 +194,272 @@ index 1dd073e2bb42..8d155bb9846c 100644 /* check for port */ if (s < ue && *s == '[' && *(e-1) == ']') { /* Short circuit portscan, +From 22756113c67b9fc7dce542c80722f24351e85a45 Mon Sep 17 00:00:00 2001 +From: Remi Collet +Date: Thu, 7 Jan 2021 11:42:58 +0100 +Subject: [PATCH] NEWS + +--- + NEWS | 7 +++++++ + 1 file changed, 7 insertions(+) + +diff --git a/NEWS b/NEWS +index 1f037cb301..7f2d588c4d 100644 +--- a/NEWS ++++ b/NEWS +@@ -1,5 +1,12 @@ + PHP NEWS + ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| ++ ++Backported from 7.3.26 ++ ++- Standard: ++ . Fixed bug #77423 (FILTER_VALIDATE_URL accepts URLs with invalid userinfo). ++ (CVE-2020-7071) (cmb) ++ + 01 Oct 2020, PHP 7.2.34 + + - Core: +From 356f7008f36da60ec9794d48c55d117f1dd31903 Mon Sep 17 00:00:00 2001 +From: "Christoph M. Becker" +Date: Tue, 19 Jan 2021 11:23:25 +0100 +Subject: [PATCH] Alternative fix for bug 77423 + +That bug report originally was about `parse_url()` misbehaving, but the +security aspect was actually only regarding `FILTER_VALIDATE_URL`. +Since the changes to `parse_url_ex()` apparently affect userland code +which is relying on the sloppy URL parsing[1], this alternative +restores the old parsing behavior, but ensures that the userinfo is +checked for correctness for `FILTER_VALIDATE_URL`. + +[1] + +(cherry picked from commit 4a89e726bd4d0571991dc22a9a1ad4509e8fe347) +(cherry picked from commit 9c673083cd46ee2a954a62156acbe4b6e657c048) +--- + ext/filter/logical_filters.c | 25 +++++++++++++++++++ + .../tests/url => filter/tests}/bug77423.phpt | 15 ----------- + ext/standard/tests/strings/url_t.phpt | 6 +++-- + .../tests/url/parse_url_basic_001.phpt | 6 +++-- + .../tests/url/parse_url_basic_003.phpt | 2 +- + .../tests/url/parse_url_basic_005.phpt | 2 +- + .../tests/url/parse_url_unterminated.phpt | 6 +++-- + ext/standard/url.c | 21 ---------------- + 8 files changed, 39 insertions(+), 44 deletions(-) + rename ext/{standard/tests/url => filter/tests}/bug77423.phpt (53%) + +diff --git a/ext/filter/logical_filters.c b/ext/filter/logical_filters.c +index b2d0264b76..ad0956a505 100644 +--- a/ext/filter/logical_filters.c ++++ b/ext/filter/logical_filters.c +@@ -514,6 +514,24 @@ void php_filter_validate_domain(PHP_INPUT_FILTER_PARAM_DECL) /* {{{ */ + } + /* }}} */ + ++static int is_userinfo_valid(char *str) ++{ ++ const char *valid = "-._~!$&'()*+,;=:"; ++ const char *p = str; ++ size_t len = strlen(str); ++ ++ while (p - str < len) { ++ if (isalpha(*p) || isdigit(*p) || strchr(valid, *p)) { ++ p++; ++ } else if (*p == '%' && p - str <= len - 3 && isdigit(*(p+1)) && isxdigit(*(p+2))) { ++ p += 3; ++ } else { ++ return 0; ++ } ++ } ++ return 1; ++} ++ + void php_filter_validate_url(PHP_INPUT_FILTER_PARAM_DECL) /* {{{ */ + { + php_url *url; +@@ -568,6 +586,13 @@ bad_url: + php_url_free(url); + RETURN_VALIDATION_FAILED + } ++ ++ if (url->user != NULL && !is_userinfo_valid(url->user)) { ++ php_url_free(url); ++ RETURN_VALIDATION_FAILED ++ ++ } ++ + php_url_free(url); + } + /* }}} */ +diff --git a/ext/standard/tests/url/bug77423.phpt b/ext/filter/tests/bug77423.phpt +similarity index 53% +rename from ext/standard/tests/url/bug77423.phpt +rename to ext/filter/tests/bug77423.phpt +index be03fe95e2..761c7c359a 100644 +--- a/ext/standard/tests/url/bug77423.phpt ++++ b/ext/filter/tests/bug77423.phpt +@@ -8,23 +8,8 @@ $urls = array( + ); + foreach ($urls as $url) { + var_dump(filter_var($url, FILTER_VALIDATE_URL)); +- var_dump(parse_url($url)); + } + ?> + --EXPECT-- + bool(false) +-array(3) { +- ["scheme"]=> +- string(4) "http" +- ["host"]=> +- string(19) "php.net\@aliyun.com" +- ["path"]=> +- string(7) "/aaa.do" +-} + bool(false) +-array(2) { +- ["scheme"]=> +- string(5) "https" +- ["host"]=> +- string(26) "example.com\uFF03@bing.com" +-} +diff --git a/ext/standard/tests/strings/url_t.phpt b/ext/standard/tests/strings/url_t.phpt +index f564f59f06..79ff3bc4a8 100644 +--- a/ext/standard/tests/strings/url_t.phpt ++++ b/ext/standard/tests/strings/url_t.phpt +@@ -575,13 +575,15 @@ $sample_urls = array ( + string(16) "some_page_ref123" + } + +---> http://secret@hideout@www.php.net:80/index.php?test=1&test2=char&test3=mixesCI#some_page_ref123: array(6) { ++--> http://secret@hideout@www.php.net:80/index.php?test=1&test2=char&test3=mixesCI#some_page_ref123: array(7) { + ["scheme"]=> + string(4) "http" + ["host"]=> +- string(26) "secret@hideout@www.php.net" ++ string(11) "www.php.net" + ["port"]=> + int(80) ++ ["user"]=> ++ string(14) "secret@hideout" + ["path"]=> + string(10) "/index.php" + ["query"]=> +diff --git a/ext/standard/tests/url/parse_url_basic_001.phpt b/ext/standard/tests/url/parse_url_basic_001.phpt +index 5101099132..4606849c57 100644 +--- a/ext/standard/tests/url/parse_url_basic_001.phpt ++++ b/ext/standard/tests/url/parse_url_basic_001.phpt +@@ -506,13 +506,15 @@ echo "Done"; + string(16) "some_page_ref123" + } + +---> http://secret@hideout@www.php.net:80/index.php?test=1&test2=char&test3=mixesCI#some_page_ref123: array(6) { ++--> http://secret@hideout@www.php.net:80/index.php?test=1&test2=char&test3=mixesCI#some_page_ref123: array(7) { + ["scheme"]=> + string(4) "http" + ["host"]=> +- string(26) "secret@hideout@www.php.net" ++ string(11) "www.php.net" + ["port"]=> + int(80) ++ ["user"]=> ++ string(14) "secret@hideout" + ["path"]=> + string(10) "/index.php" + ["query"]=> +diff --git a/ext/standard/tests/url/parse_url_basic_003.phpt b/ext/standard/tests/url/parse_url_basic_003.phpt +index 7968fd3f09..3d5a4a344a 100644 +--- a/ext/standard/tests/url/parse_url_basic_003.phpt ++++ b/ext/standard/tests/url/parse_url_basic_003.phpt +@@ -68,7 +68,7 @@ echo "Done"; + --> http://secret:@www.php.net/index.php?test=1&test2=char&test3=mixesCI#some_page_ref123 : string(11) "www.php.net" + --> http://:hideout@www.php.net:80/index.php?test=1&test2=char&test3=mixesCI#some_page_ref123 : string(11) "www.php.net" + --> http://secret:hideout@www.php.net/index.php?test=1&test2=char&test3=mixesCI#some_page_ref123 : string(11) "www.php.net" +---> http://secret@hideout@www.php.net:80/index.php?test=1&test2=char&test3=mixesCI#some_page_ref123 : string(26) "secret@hideout@www.php.net" ++--> http://secret@hideout@www.php.net:80/index.php?test=1&test2=char&test3=mixesCI#some_page_ref123 : string(11) "www.php.net" + --> http://secret:hid:out@www.php.net:80/index.php?test=1&test2=char&test3=mixesCI#some_page_ref123 : string(11) "www.php.net" + --> nntp://news.php.net : string(12) "news.php.net" + --> ftp://ftp.gnu.org/gnu/glic/glibc.tar.gz : string(11) "ftp.gnu.org" +diff --git a/ext/standard/tests/url/parse_url_basic_005.phpt b/ext/standard/tests/url/parse_url_basic_005.phpt +index ba778bf903..aefb33964b 100644 +--- a/ext/standard/tests/url/parse_url_basic_005.phpt ++++ b/ext/standard/tests/url/parse_url_basic_005.phpt +@@ -68,7 +68,7 @@ echo "Done"; + --> http://secret:@www.php.net/index.php?test=1&test2=char&test3=mixesCI#some_page_ref123 : string(6) "secret" + --> http://:hideout@www.php.net:80/index.php?test=1&test2=char&test3=mixesCI#some_page_ref123 : string(0) "" + --> http://secret:hideout@www.php.net/index.php?test=1&test2=char&test3=mixesCI#some_page_ref123 : string(6) "secret" +---> http://secret@hideout@www.php.net:80/index.php?test=1&test2=char&test3=mixesCI#some_page_ref123 : NULL ++--> http://secret@hideout@www.php.net:80/index.php?test=1&test2=char&test3=mixesCI#some_page_ref123 : string(14) "secret@hideout" + --> http://secret:hid:out@www.php.net:80/index.php?test=1&test2=char&test3=mixesCI#some_page_ref123 : string(6) "secret" + --> nntp://news.php.net : NULL + --> ftp://ftp.gnu.org/gnu/glic/glibc.tar.gz : NULL +diff --git a/ext/standard/tests/url/parse_url_unterminated.phpt b/ext/standard/tests/url/parse_url_unterminated.phpt +index 875d93a109..912b6a5641 100644 +--- a/ext/standard/tests/url/parse_url_unterminated.phpt ++++ b/ext/standard/tests/url/parse_url_unterminated.phpt +@@ -508,13 +508,15 @@ echo "Done"; + string(16) "some_page_ref123" + } + +---> http://secret@hideout@www.php.net:80/index.php?test=1&test2=char&test3=mixesCI#some_page_ref123: array(6) { ++--> http://secret@hideout@www.php.net:80/index.php?test=1&test2=char&test3=mixesCI#some_page_ref123: array(7) { + ["scheme"]=> + string(4) "http" + ["host"]=> +- string(26) "secret@hideout@www.php.net" ++ string(11) "www.php.net" + ["port"]=> + int(80) ++ ["user"]=> ++ string(14) "secret@hideout" + ["path"]=> + string(10) "/index.php" + ["query"]=> +diff --git a/ext/standard/url.c b/ext/standard/url.c +index 8d155bb984..1dd073e2bb 100644 +--- a/ext/standard/url.c ++++ b/ext/standard/url.c +@@ -92,22 +92,6 @@ PHPAPI php_url *php_url_parse(char const *str) + return php_url_parse_ex(str, strlen(str)); + } + +-static int is_userinfo_valid(const char *str, size_t len) +-{ +- char *valid = "-._~!$&'()*+,;=:"; +- char *p = str; +- while (p - str < len) { +- if (isalpha(*p) || isdigit(*p) || strchr(valid, *p)) { +- p++; +- } else if (*p == '%' && p - str <= len - 3 && isdigit(*(p+1)) && isxdigit(*(p+2))) { +- p += 3; +- } else { +- return 0; +- } +- } +- return 1; +-} +- + /* {{{ php_url_parse + */ + PHPAPI php_url *php_url_parse_ex(char const *str, size_t length) +@@ -251,18 +235,13 @@ PHPAPI php_url *php_url_parse_ex(char const *str, size_t length) + ret->pass = estrndup(pp, (p-pp)); + php_replace_controlchars_ex(ret->pass, (p-pp)); + } else { +- if (!is_userinfo_valid(s, p-s)) { +- goto check_port; +- } + ret->user = estrndup(s, (p-s)); + php_replace_controlchars_ex(ret->user, (p-s)); +- + } + + s = p + 1; + } + +-check_port: + /* check for port */ + if (s < ue && *s == '[' && *(e-1) == ']') { + /* Short circuit portscan, +-- +2.29.2 + -- cgit