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Bug #67262 bug in libapache2-mod-php5filter
Submitted: 2014-05-12 18:52 UTC Modified: -
Votes:2
Avg. Score:4.0 ± 1.0
Reproduced:2 of 2 (100.0%)
Same Version:1 (50.0%)
Same OS:1 (50.0%)
From: vladget at gmail dot com Assigned:
Status: Open Package: Apache2 related
PHP Version: 5.4.28 OS: Ubuntu
Private report: No CVE-ID: None
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From: vladget at gmail dot com
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 [2014-05-12 18:52 UTC] vladget at gmail dot com
Description:
------------
Hello!

php5filter duplicate data in POST from forms used as arrays(http://us2.php.net/manual/en/faq.html.php#faq.html.arrays)

Here is simple way to reproduce it:
cat f.php

<!DOCTYPE html>
<html>
<head>
    <meta charset="windows-1251">
</head>
<body>

<form action="f.php" method="post" enctype="multipart/form-data">
    <input type="text" name="a">
    <input type="text" name="b[]">
    <input type="text" name="b[]">
    <button type="submit">submit</button>
</form>
<?php

if (!empty($_POST)) {
    echo '<pre>';
    echo "POST:\n";
    var_dump($_POST);
    echo '</pre>';
}

?>
</body>
</html>

libapache2-mod-php5filter as apache mod_php:

  ["a"]=>
  string(1) "1"
  ["b"]=>
  array(4) {
    [0]=>
    string(1) "2"
    [1]=>
    string(1) "3"
    [2]=>
    string(1) "2"
    [3]=>
    string(1) "3"

but it works fine with libapache2-mod-php5 as apache mod_php:

array(2) {
  ["a"]=>
  string(1) "1"
  ["b"]=>
  array(2) {
    [0]=>
    string(1) "2"
    [1]=>
    string(1) "3"

Test script:
---------------
<!DOCTYPE html>
<html>
<head>
    <meta charset="windows-1251">
</head>
<body>

<form action="f.php" method="post" enctype="multipart/form-data">
    <input type="text" name="a">
    <input type="text" name="b[]">
    <input type="text" name="b[]">
    <button type="submit">submit</button>
</form>
<?php

if (!empty($_POST)) {
    echo '<pre>';
    echo "POST:\n";
    var_dump($_POST);
    echo '</pre>';
}

?>
</body>
</html>


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 [2014-05-29 12:16 UTC] rmn1024 at gmail dot com
There is also bug with non-array POST-variables. But it looks little different because variables append to last.
If you send in POST body:
a=123

You will receive

array(1) {
  ["a"]=>
  string(8) "123a=123"
}
 
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