diff options
Diffstat (limited to 'php-bug80710.patch')
| -rw-r--r-- | php-bug80710.patch | 373 |
1 files changed, 373 insertions, 0 deletions
diff --git a/php-bug80710.patch b/php-bug80710.patch new file mode 100644 index 0000000..d66dd07 --- /dev/null +++ b/php-bug80710.patch @@ -0,0 +1,373 @@ +From bfa81ac72836e53a75665eb1f78a6d67489da2e3 Mon Sep 17 00:00:00 2001 +From: "Christoph M. Becker" <cmbecker69@gmx.de> +Date: Fri, 5 Feb 2021 22:51:41 +0100 +Subject: [PATCH 1/2] Fix #80710: imap_mail_compose() header injection + +Like `mail()` and `mb_send_mail()`, `imap_mail_compose()` must prevent +header injection. For maximum backward compatibility, we still allow +header folding for general headers, and still accept trailing line +breaks for address lists. + +(cherry picked from commit 37962c61d29794645ec45d45d78123382d82c2e5) +(cherry picked from commit 9017896cccefe000938f80b49361b1c183849922) +--- + ext/imap/php_imap.c | 56 ++++++++++++++++++++++++++++++++++ + ext/imap/tests/bug80710_1.phpt | 37 ++++++++++++++++++++++ + ext/imap/tests/bug80710_2.phpt | 37 ++++++++++++++++++++++ + 3 files changed, 130 insertions(+) + create mode 100644 ext/imap/tests/bug80710_1.phpt + create mode 100644 ext/imap/tests/bug80710_2.phpt + +diff --git a/ext/imap/php_imap.c b/ext/imap/php_imap.c +index 011cbc0dfd..5f8c0da79a 100644 +--- a/ext/imap/php_imap.c ++++ b/ext/imap/php_imap.c +@@ -3531,6 +3531,23 @@ PHP_FUNCTION(imap_fetch_overview) + } + /* }}} */ + ++static zend_bool header_injection(zend_string *str, zend_bool adrlist) ++{ ++ char *p = ZSTR_VAL(str); ++ ++ while ((p = strpbrk(p, "\r\n")) != NULL) { ++ if (!(p[0] == '\r' && p[1] == '\n') ++ /* adrlists do not support folding, but swallow trailing line breaks */ ++ && !((adrlist && p[1] == '\0') ++ /* other headers support folding */ ++ || !adrlist && (p[1] == ' ' || p[1] == '\t'))) { ++ return 1; ++ } ++ p++; ++ } ++ return 0; ++} ++ + /* {{{ proto string imap_mail_compose(array envelope, array body) + Create a MIME message based on given envelope and body sections */ + PHP_FUNCTION(imap_mail_compose) +@@ -3551,6 +3568,13 @@ PHP_FUNCTION(imap_mail_compose) + return; + } + ++#define CHECK_HEADER_INJECTION(zstr, adrlist, header) \ ++ if (header_injection(zstr, adrlist)) { \ ++ php_error_docref(NULL, E_WARNING, "header injection attempt in " header); \ ++ RETVAL_FALSE; \ ++ goto done; \ ++ } ++ + #define PHP_RFC822_PARSE_ADRLIST(target, value) \ + str_copy = estrndup(Z_STRVAL_P(value), Z_STRLEN_P(value)); \ + rfc822_parse_adrlist(target, str_copy, "NO HOST"); \ +@@ -3559,46 +3583,57 @@ PHP_FUNCTION(imap_mail_compose) + env = mail_newenvelope(); + if ((pvalue = zend_hash_str_find(Z_ARRVAL_P(envelope), "remail", sizeof("remail") - 1)) != NULL) { + convert_to_string_ex(pvalue); ++ CHECK_HEADER_INJECTION(Z_STR_P(pvalue), 0, "remail"); + env->remail = cpystr(Z_STRVAL_P(pvalue)); + } + if ((pvalue = zend_hash_str_find(Z_ARRVAL_P(envelope), "return_path", sizeof("return_path") - 1)) != NULL) { + convert_to_string_ex(pvalue); ++ CHECK_HEADER_INJECTION(Z_STR_P(pvalue), 1, "return_path"); + PHP_RFC822_PARSE_ADRLIST(&env->return_path, pvalue); + } + if ((pvalue = zend_hash_str_find(Z_ARRVAL_P(envelope), "date", sizeof("date") - 1)) != NULL) { + convert_to_string_ex(pvalue); ++ CHECK_HEADER_INJECTION(Z_STR_P(pvalue), 0, "date"); + env->date = (unsigned char*)cpystr(Z_STRVAL_P(pvalue)); + } + if ((pvalue = zend_hash_str_find(Z_ARRVAL_P(envelope), "from", sizeof("from") - 1)) != NULL) { + convert_to_string_ex(pvalue); ++ CHECK_HEADER_INJECTION(Z_STR_P(pvalue), 1, "from"); + PHP_RFC822_PARSE_ADRLIST(&env->from, pvalue); + } + if ((pvalue = zend_hash_str_find(Z_ARRVAL_P(envelope), "reply_to", sizeof("reply_to") - 1)) != NULL) { + convert_to_string_ex(pvalue); ++ CHECK_HEADER_INJECTION(Z_STR_P(pvalue), 1, "reply_to"); + PHP_RFC822_PARSE_ADRLIST(&env->reply_to, pvalue); + } + if ((pvalue = zend_hash_str_find(Z_ARRVAL_P(envelope), "in_reply_to", sizeof("in_reply_to") - 1)) != NULL) { + convert_to_string_ex(pvalue); ++ CHECK_HEADER_INJECTION(Z_STR_P(pvalue), 0, "in_reply_to"); + env->in_reply_to = cpystr(Z_STRVAL_P(pvalue)); + } + if ((pvalue = zend_hash_str_find(Z_ARRVAL_P(envelope), "subject", sizeof("subject") - 1)) != NULL) { + convert_to_string_ex(pvalue); ++ CHECK_HEADER_INJECTION(Z_STR_P(pvalue), 0, "subject"); + env->subject = cpystr(Z_STRVAL_P(pvalue)); + } + if ((pvalue = zend_hash_str_find(Z_ARRVAL_P(envelope), "to", sizeof("to") - 1)) != NULL) { + convert_to_string_ex(pvalue); ++ CHECK_HEADER_INJECTION(Z_STR_P(pvalue), 1, "to"); + PHP_RFC822_PARSE_ADRLIST(&env->to, pvalue); + } + if ((pvalue = zend_hash_str_find(Z_ARRVAL_P(envelope), "cc", sizeof("cc") - 1)) != NULL) { + convert_to_string_ex(pvalue); ++ CHECK_HEADER_INJECTION(Z_STR_P(pvalue), 1, "cc"); + PHP_RFC822_PARSE_ADRLIST(&env->cc, pvalue); + } + if ((pvalue = zend_hash_str_find(Z_ARRVAL_P(envelope), "bcc", sizeof("bcc") - 1)) != NULL) { + convert_to_string_ex(pvalue); ++ CHECK_HEADER_INJECTION(Z_STR_P(pvalue), 1, "bcc"); + PHP_RFC822_PARSE_ADRLIST(&env->bcc, pvalue); + } + if ((pvalue = zend_hash_str_find(Z_ARRVAL_P(envelope), "message_id", sizeof("message_id") - 1)) != NULL) { + convert_to_string_ex(pvalue); ++ CHECK_HEADER_INJECTION(Z_STR_P(pvalue), 0, "message_id"); + env->message_id=cpystr(Z_STRVAL_P(pvalue)); + } + +@@ -3608,6 +3643,7 @@ PHP_FUNCTION(imap_mail_compose) + ZEND_HASH_FOREACH_VAL(Z_ARRVAL_P(pvalue), env_data) { + custom_headers_param = mail_newbody_parameter(); + convert_to_string_ex(env_data); ++ CHECK_HEADER_INJECTION(Z_STR_P(env_data), 0, "custom_headers"); + custom_headers_param->value = (char *) fs_get(Z_STRLEN_P(env_data) + 1); + custom_headers_param->attribute = NULL; + memcpy(custom_headers_param->value, Z_STRVAL_P(env_data), Z_STRLEN_P(env_data) + 1); +@@ -3640,6 +3676,7 @@ PHP_FUNCTION(imap_mail_compose) + } + if ((pvalue = zend_hash_str_find(Z_ARRVAL_P(data), "charset", sizeof("charset") - 1)) != NULL) { + convert_to_string_ex(pvalue); ++ CHECK_HEADER_INJECTION(Z_STR_P(pvalue), 0, "body charset"); + tmp_param = mail_newbody_parameter(); + tmp_param->value = cpystr(Z_STRVAL_P(pvalue)); + tmp_param->attribute = cpystr("CHARSET"); +@@ -3650,9 +3687,11 @@ PHP_FUNCTION(imap_mail_compose) + if(Z_TYPE_P(pvalue) == IS_ARRAY) { + disp_param = tmp_param = NULL; + ZEND_HASH_FOREACH_STR_KEY_VAL(Z_ARRVAL_P(pvalue), key, disp_data) { ++ CHECK_HEADER_INJECTION(key, 0, "body disposition key"); + disp_param = mail_newbody_parameter(); + disp_param->attribute = cpystr(ZSTR_VAL(key)); + convert_to_string_ex(disp_data); ++ CHECK_HEADER_INJECTION(Z_STR_P(disp_data), 0, "body disposition value"); + disp_param->value = (char *) fs_get(Z_STRLEN_P(disp_data) + 1); + memcpy(disp_param->value, Z_STRVAL_P(disp_data), Z_STRLEN_P(disp_data) + 1); + disp_param->next = tmp_param; +@@ -3663,18 +3702,22 @@ PHP_FUNCTION(imap_mail_compose) + } + if ((pvalue = zend_hash_str_find(Z_ARRVAL_P(data), "subtype", sizeof("subtype") - 1)) != NULL) { + convert_to_string_ex(pvalue); ++ CHECK_HEADER_INJECTION(Z_STR_P(pvalue), 0, "body subtype"); + bod->subtype = cpystr(Z_STRVAL_P(pvalue)); + } + if ((pvalue = zend_hash_str_find(Z_ARRVAL_P(data), "id", sizeof("id") - 1)) != NULL) { + convert_to_string_ex(pvalue); ++ CHECK_HEADER_INJECTION(Z_STR_P(pvalue), 0, "body id"); + bod->id = cpystr(Z_STRVAL_P(pvalue)); + } + if ((pvalue = zend_hash_str_find(Z_ARRVAL_P(data), "description", sizeof("description") - 1)) != NULL) { + convert_to_string_ex(pvalue); ++ CHECK_HEADER_INJECTION(Z_STR_P(pvalue), 0, "body description"); + bod->description = cpystr(Z_STRVAL_P(pvalue)); + } + if ((pvalue = zend_hash_str_find(Z_ARRVAL_P(data), "disposition.type", sizeof("disposition.type") - 1)) != NULL) { + convert_to_string_ex(pvalue); ++ CHECK_HEADER_INJECTION(Z_STR_P(pvalue), 0, "body disposition.type"); + bod->disposition.type = (char *) fs_get(Z_STRLEN_P(pvalue) + 1); + memcpy(bod->disposition.type, Z_STRVAL_P(pvalue), Z_STRLEN_P(pvalue)+1); + } +@@ -3682,9 +3725,11 @@ PHP_FUNCTION(imap_mail_compose) + if (Z_TYPE_P(pvalue) == IS_ARRAY) { + disp_param = tmp_param = NULL; + ZEND_HASH_FOREACH_STR_KEY_VAL(Z_ARRVAL_P(pvalue), key, disp_data) { ++ CHECK_HEADER_INJECTION(key, 0, "body type.parameters key"); + disp_param = mail_newbody_parameter(); + disp_param->attribute = cpystr(ZSTR_VAL(key)); + convert_to_string_ex(disp_data); ++ CHECK_HEADER_INJECTION(Z_STR_P(disp_data), 0, "body type.parameters value"); + disp_param->value = (char *) fs_get(Z_STRLEN_P(disp_data) + 1); + memcpy(disp_param->value, Z_STRVAL_P(disp_data), Z_STRLEN_P(disp_data) + 1); + disp_param->next = tmp_param; +@@ -3713,6 +3758,7 @@ PHP_FUNCTION(imap_mail_compose) + } + if ((pvalue = zend_hash_str_find(Z_ARRVAL_P(data), "md5", sizeof("md5") - 1)) != NULL) { + convert_to_string_ex(pvalue); ++ CHECK_HEADER_INJECTION(Z_STR_P(pvalue), 0, "body md5"); + bod->md5 = cpystr(Z_STRVAL_P(pvalue)); + } + } else if (Z_TYPE_P(data) == IS_ARRAY) { +@@ -3743,6 +3789,7 @@ PHP_FUNCTION(imap_mail_compose) + } + if ((pvalue = zend_hash_str_find(Z_ARRVAL_P(data), "charset", sizeof("charset") - 1)) != NULL) { + convert_to_string_ex(pvalue); ++ CHECK_HEADER_INJECTION(Z_STR_P(pvalue), 0, "body charset"); + tmp_param = mail_newbody_parameter(); + tmp_param->value = (char *) fs_get(Z_STRLEN_P(pvalue) + 1); + memcpy(tmp_param->value, Z_STRVAL_P(pvalue), Z_STRLEN_P(pvalue) + 1); +@@ -3754,9 +3801,11 @@ PHP_FUNCTION(imap_mail_compose) + if (Z_TYPE_P(pvalue) == IS_ARRAY) { + disp_param = tmp_param = NULL; + ZEND_HASH_FOREACH_STR_KEY_VAL(Z_ARRVAL_P(pvalue), key, disp_data) { ++ CHECK_HEADER_INJECTION(key, 0, "body type.parameters key"); + disp_param = mail_newbody_parameter(); + disp_param->attribute = cpystr(ZSTR_VAL(key)); + convert_to_string_ex(disp_data); ++ CHECK_HEADER_INJECTION(Z_STR_P(disp_data), 0, "body type.parameters value"); + disp_param->value = (char *)fs_get(Z_STRLEN_P(disp_data) + 1); + memcpy(disp_param->value, Z_STRVAL_P(disp_data), Z_STRLEN_P(disp_data) + 1); + disp_param->next = tmp_param; +@@ -3767,18 +3816,22 @@ PHP_FUNCTION(imap_mail_compose) + } + if ((pvalue = zend_hash_str_find(Z_ARRVAL_P(data), "subtype", sizeof("subtype") - 1)) != NULL) { + convert_to_string_ex(pvalue); ++ CHECK_HEADER_INJECTION(Z_STR_P(pvalue), 0, "body subtype"); + bod->subtype = cpystr(Z_STRVAL_P(pvalue)); + } + if ((pvalue = zend_hash_str_find(Z_ARRVAL_P(data), "id", sizeof("id") - 1)) != NULL) { + convert_to_string_ex(pvalue); ++ CHECK_HEADER_INJECTION(Z_STR_P(pvalue), 0, "body id"); + bod->id = cpystr(Z_STRVAL_P(pvalue)); + } + if ((pvalue = zend_hash_str_find(Z_ARRVAL_P(data), "description", sizeof("description") - 1)) != NULL) { + convert_to_string_ex(pvalue); ++ CHECK_HEADER_INJECTION(Z_STR_P(pvalue), 0, "body description"); + bod->description = cpystr(Z_STRVAL_P(pvalue)); + } + if ((pvalue = zend_hash_str_find(Z_ARRVAL_P(data), "disposition.type", sizeof("disposition.type") - 1)) != NULL) { + convert_to_string_ex(pvalue); ++ CHECK_HEADER_INJECTION(Z_STR_P(pvalue), 0, "body disposition.type"); + bod->disposition.type = (char *) fs_get(Z_STRLEN_P(pvalue) + 1); + memcpy(bod->disposition.type, Z_STRVAL_P(pvalue), Z_STRLEN_P(pvalue)+1); + } +@@ -3786,9 +3839,11 @@ PHP_FUNCTION(imap_mail_compose) + if (Z_TYPE_P(pvalue) == IS_ARRAY) { + disp_param = tmp_param = NULL; + ZEND_HASH_FOREACH_STR_KEY_VAL(Z_ARRVAL_P(pvalue), key, disp_data) { ++ CHECK_HEADER_INJECTION(key, 0, "body disposition key"); + disp_param = mail_newbody_parameter(); + disp_param->attribute = cpystr(ZSTR_VAL(key)); + convert_to_string_ex(disp_data); ++ CHECK_HEADER_INJECTION(Z_STR_P(disp_data), 0, "body disposition value"); + disp_param->value = (char *) fs_get(Z_STRLEN_P(disp_data) + 1); + memcpy(disp_param->value, Z_STRVAL_P(disp_data), Z_STRLEN_P(disp_data) + 1); + disp_param->next = tmp_param; +@@ -3817,6 +3872,7 @@ PHP_FUNCTION(imap_mail_compose) + } + if ((pvalue = zend_hash_str_find(Z_ARRVAL_P(data), "md5", sizeof("md5") - 1)) != NULL) { + convert_to_string_ex(pvalue); ++ CHECK_HEADER_INJECTION(Z_STR_P(pvalue), 0, "body md5"); + bod->md5 = cpystr(Z_STRVAL_P(pvalue)); + } + } +diff --git a/ext/imap/tests/bug80710_1.phpt b/ext/imap/tests/bug80710_1.phpt +new file mode 100644 +index 0000000000..5cdee03401 +--- /dev/null ++++ b/ext/imap/tests/bug80710_1.phpt +@@ -0,0 +1,37 @@ ++--TEST-- ++Bug #80710 (imap_mail_compose() header injection) - MIME Splitting Attack ++--SKIPIF-- ++<?php ++if (!extension_loaded("imap")) die("skip imap extension not available"); ++?> ++--FILE-- ++<?php ++$envelope["from"]= "joe@example.com\n From : X-INJECTED"; ++$envelope["to"] = "foo@example.com\nFrom: X-INJECTED"; ++$envelope["cc"] = "bar@example.com\nFrom: X-INJECTED"; ++$envelope["subject"] = "bar@example.com\n\n From : X-INJECTED"; ++$envelope["x-remail"] = "bar@example.com\nFrom: X-INJECTED"; ++$envelope["something"] = "bar@example.com\nFrom: X-INJECTED"; ++ ++$part1["type"] = TYPEMULTIPART; ++$part1["subtype"] = "mixed"; ++ ++$part2["type"] = TYPEAPPLICATION; ++$part2["encoding"] = ENCBINARY; ++$part2["subtype"] = "octet-stream\nContent-Type: X-INJECTED"; ++$part2["description"] = "some file\nContent-Type: X-INJECTED"; ++$part2["contents.data"] = "ABC\nContent-Type: X-INJECTED"; ++ ++$part3["type"] = TYPETEXT; ++$part3["subtype"] = "plain"; ++$part3["description"] = "description3"; ++$part3["contents.data"] = "contents.data3\n\n\n\t"; ++ ++$body[1] = $part1; ++$body[2] = $part2; ++$body[3] = $part3; ++ ++echo imap_mail_compose($envelope, $body); ++?> ++--EXPECTF-- ++Warning: imap_mail_compose(): header injection attempt in from in %s on line %d +diff --git a/ext/imap/tests/bug80710_2.phpt b/ext/imap/tests/bug80710_2.phpt +new file mode 100644 +index 0000000000..b9f2fa8544 +--- /dev/null ++++ b/ext/imap/tests/bug80710_2.phpt +@@ -0,0 +1,37 @@ ++--TEST-- ++Bug #80710 (imap_mail_compose() header injection) - Remail ++--SKIPIF-- ++<?php ++if (!extension_loaded("imap")) die("skip imap extension not available"); ++?> ++--FILE-- ++<?php ++$envelope["from"]= "joe@example.com\n From : X-INJECTED"; ++$envelope["to"] = "foo@example.com\nFrom: X-INJECTED"; ++$envelope["cc"] = "bar@example.com\nFrom: X-INJECTED"; ++$envelope["subject"] = "bar@example.com\n\n From : X-INJECTED"; ++$envelope["remail"] = "X-INJECTED-REMAIL: X-INJECTED\nFrom: X-INJECTED-REMAIL-FROM"; //<--- Injected as first hdr ++$envelope["something"] = "bar@example.com\nFrom: X-INJECTED"; ++ ++$part1["type"] = TYPEMULTIPART; ++$part1["subtype"] = "mixed"; ++ ++$part2["type"] = TYPEAPPLICATION; ++$part2["encoding"] = ENCBINARY; ++$part2["subtype"] = "octet-stream\nContent-Type: X-INJECTED"; ++$part2["description"] = "some file\nContent-Type: X-INJECTED"; ++$part2["contents.data"] = "ABC\nContent-Type: X-INJECTED"; ++ ++$part3["type"] = TYPETEXT; ++$part3["subtype"] = "plain"; ++$part3["description"] = "description3"; ++$part3["contents.data"] = "contents.data3\n\n\n\t"; ++ ++$body[1] = $part1; ++$body[2] = $part2; ++$body[3] = $part3; ++ ++echo imap_mail_compose($envelope, $body); ++?> ++--EXPECTF-- ++Warning: imap_mail_compose(): header injection attempt in remail in %s on line %d +-- +2.30.2 + +From 5a31584debadbb8e7195d768edece32b249e14bb Mon Sep 17 00:00:00 2001 +From: "Christoph M. Becker" <cmbecker69@gmx.de> +Date: Tue, 27 Apr 2021 13:38:39 +0200 +Subject: [PATCH 2/2] Add missing NEWS entry for #80710 + +(cherry picked from commit 60a68a45c3e9f63585151221e7fe9ddff78bd71f) +(cherry picked from commit f16c623ec8ae3f3cdc73ab3fa05ae6bb0a77d1f3) +--- + NEWS | 5 +++++ + 1 file changed, 5 insertions(+) + +diff --git a/NEWS b/NEWS +index fe5564de15..9eff4bd7ae 100644 +--- a/NEWS ++++ b/NEWS +@@ -1,6 +1,11 @@ + PHP NEWS + ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| + ++Backported from 7.3.28 ++ ++- Imap: ++ . Fixed bug #80710 (imap_mail_compose() header injection). (cmb, Stas) ++ + Backported from 7.3.27 + + - SOAP: +-- +2.30.2 + |