From d4f5aed22193106271510efd643ba8f349b7d85f Mon Sep 17 00:00:00 2001 From: Stanislav Malyshev Date: Fri, 1 Jan 2021 21:06:07 -0800 Subject: Fix #77423: parse_url() will deliver a wrong host to user (cherry picked from commit 128fca40376140c60b47a1c3750bb6435866838e) --- NEWS | 2 ++ ext/standard/tests/strings/url_t.phpt | 6 ++--- ext/standard/tests/url/bug77423.phpt | 30 ++++++++++++++++++++++ ext/standard/tests/url/parse_url_basic_001.phpt | 6 ++--- ext/standard/tests/url/parse_url_basic_003.phpt | 2 +- ext/standard/tests/url/parse_url_basic_005.phpt | 2 +- ext/standard/tests/url/parse_url_unterminated.phpt | 6 ++--- ext/standard/url.c | 24 ++++++++++++++++- 8 files changed, 63 insertions(+), 15 deletions(-) create mode 100644 ext/standard/tests/url/bug77423.phpt diff --git a/NEWS b/NEWS index e3c0c8e112..f7418f769e 100644 --- a/NEWS +++ b/NEWS @@ -3,6 +3,8 @@ PHP NEWS 07 Jan 2021, PHP 7.3.26 - Standard: + . Fixed bug #77423 (FILTER_VALIDATE_URL accepts URLs with invalid userinfo). + (CVE-2020-7071) (cmb) . Fixed bug #80457 (stream_get_contents() fails with maxlength=-1 or default). (bruno dot premont at restena dot lu) diff --git a/ext/standard/tests/strings/url_t.phpt b/ext/standard/tests/strings/url_t.phpt index 79ff3bc4a8..f564f59f06 100644 --- a/ext/standard/tests/strings/url_t.phpt +++ b/ext/standard/tests/strings/url_t.phpt @@ -575,15 +575,13 @@ $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(7) { +--> http://secret@hideout@www.php.net:80/index.php?test=1&test2=char&test3=mixesCI#some_page_ref123: array(6) { ["scheme"]=> string(4) "http" ["host"]=> - string(11) "www.php.net" + string(26) "secret@hideout@www.php.net" ["port"]=> int(80) - ["user"]=> - string(14) "secret@hideout" ["path"]=> string(10) "/index.php" ["query"]=> diff --git a/ext/standard/tests/url/bug77423.phpt b/ext/standard/tests/url/bug77423.phpt new file mode 100644 index 0000000000..be03fe95e2 --- /dev/null +++ b/ext/standard/tests/url/bug77423.phpt @@ -0,0 +1,30 @@ +--TEST-- +Bug #77423 (parse_url() will deliver a wrong host to user) +--FILE-- + +--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/url/parse_url_basic_001.phpt b/ext/standard/tests/url/parse_url_basic_001.phpt index 7ffd001856..57014f0839 100644 --- a/ext/standard/tests/url/parse_url_basic_001.phpt +++ b/ext/standard/tests/url/parse_url_basic_001.phpt @@ -506,15 +506,13 @@ 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(7) { +--> http://secret@hideout@www.php.net:80/index.php?test=1&test2=char&test3=mixesCI#some_page_ref123: array(6) { ["scheme"]=> string(4) "http" ["host"]=> - string(11) "www.php.net" + string(26) "secret@hideout@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 8b0e7eb875..e7cd24c969 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(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: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 a5ca381a69..8617d37059 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 : string(14) "secret@hideout" +--> http://secret@hideout@www.php.net:80/index.php?test=1&test2=char&test3=mixesCI#some_page_ref123 : NULL --> 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 8f46eb3dbe..1377cb7735 100644 --- a/ext/standard/tests/url/parse_url_unterminated.phpt +++ b/ext/standard/tests/url/parse_url_unterminated.phpt @@ -508,15 +508,13 @@ 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(7) { +--> http://secret@hideout@www.php.net:80/index.php?test=1&test2=char&test3=mixesCI#some_page_ref123: array(6) { ["scheme"]=> string(4) "http" ["host"]=> - string(11) "www.php.net" + string(26) "secret@hideout@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 98dc0f786d..157d61466e 100644 --- a/ext/standard/url.c +++ b/ext/standard/url.c @@ -102,6 +102,24 @@ static const char *binary_strcspn(const char *s, const char *e, const char *char return e; } +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) { zend_bool has_port; @@ -242,13 +260,17 @@ parse_host: ret->pass = zend_string_init(pp, (p-pp), 0); php_replace_controlchars_ex(ZSTR_VAL(ret->pass), ZSTR_LEN(ret->pass)); } else { - ret->user = zend_string_init(s, (p-s), 0); + if (!is_userinfo_valid(s, p-s)) { + goto check_port; + } + ret->user = zend_string_init(s, (p-s), 0); php_replace_controlchars_ex(ZSTR_VAL(ret->user), ZSTR_LEN(ret->user)); } s = p + 1; } +check_port: /* check for port */ if (s < ue && *s == '[' && *(e-1) == ']') { /* Short circuit portscan, -- cgit v1.2.1