Bug #78083 [NEW]: exif_read_data() corrupt EXIF header: maximum directory nesting level reached

From: Date: Wed, 29 May 2019 16:53:39 +0000
Subject: Bug #78083 [NEW]: exif_read_data() corrupt EXIF header: maximum directory nesting level reached
Groups: php.bugs 
Request: Send a blank email to php-bugs+get-221042@lists.php.net to get a copy of this message
From:             fermin at ares dot uy
Operating system: Windows 10
PHP version:      7.3.5
Package:          EXIF related
Bug Type:         Bug
Bug description:exif_read_data() corrupt EXIF header: maximum directory nesting level reached

Description:
------------
When using the function "exif_read_data()" on certain jpg images it
outputs this warning:

"Warning: exif_read_data(php7D62.tmp): corrupt EXIF header: maximum
directory nesting level reached in \path\to\index.php on line 4"

And the metadata field 'title' does not show up on the resulting array.

You can download a problematic image for testing here
https://ares.uy/P1110193.JPG

Test script:
---------------
<?php
if (!empty($_FILES)) {
  $imagen = $_FILES['imagen']['tmp_name'];
  $metadata = exif_read_data($imagen, 0, true);
  highlight_string("<?php\n\$metadata =\n" . var_export($metadata, true)
. ";\n?>");
}
?>

<!DOCTYPE html>
<html lang="en" dir="ltr">
  <head>
    <meta charset="utf-8">
    <title>EXIF TEST</title>
  </head>
  <body>
    <form action="/" method="post"
enctype="multipart/form-data">
      <input type="file" name="imagen" value="">
      <input type="submit" name="" value="Print EXIF">
    </form>
  </body>
</html>


Expected result:
----------------
No warning message and the complete list of metadata fields on the array
outputted by the function exif_read_data.

Actual result:
--------------
Warning message and incomplete metadata array.

-- 
Edit bug report at https://bugs.php.net/bug.php?id=78083&edit=1
-- 
Try a snapshot (PHP 5.4):   https://bugs.php.net/fix.php?id=78083&r=trysnapshot54
Try a snapshot (PHP 5.5):   https://bugs.php.net/fix.php?id=78083&r=trysnapshot55
Try a snapshot (trunk):     https://bugs.php.net/fix.php?id=78083&r=trysnapshottrunk
Fixed in SVN:               https://bugs.php.net/fix.php?id=78083&r=fixed
Fixed in release:           https://bugs.php.net/fix.php?id=78083&r=alreadyfixed
Need backtrace:             https://bugs.php.net/fix.php?id=78083&r=needtrace
Need Reproduce Script:      https://bugs.php.net/fix.php?id=78083&r=needscript
Try newer version:          https://bugs.php.net/fix.php?id=78083&r=oldversion
Not developer issue:        https://bugs.php.net/fix.php?id=78083&r=support
Expected behavior:          https://bugs.php.net/fix.php?id=78083&r=notwrong
Not enough info:            https://bugs.php.net/fix.php?id=78083&r=notenoughinfo
Submitted twice:            https://bugs.php.net/fix.php?id=78083&r=submittedtwice
register_globals:           https://bugs.php.net/fix.php?id=78083&r=globals
PHP 4 support discontinued: https://bugs.php.net/fix.php?id=78083&r=php4
Daylight Savings:           https://bugs.php.net/fix.php?id=78083&r=dst
IIS Stability:              https://bugs.php.net/fix.php?id=78083&r=isapi
Install GNU Sed:            https://bugs.php.net/fix.php?id=78083&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=78083&r=float
No Zend Extensions:         https://bugs.php.net/fix.php?id=78083&r=nozend
MySQL Configuration Error:  https://bugs.php.net/fix.php?id=78083&r=mysqlcfg



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