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Improvement
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Resolution: Fixed
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Major
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3.0.5
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None
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PHP Environment: 5.2.9
Database:
phpBB uses getimagesize() to get image dimensions when setting an off-site avatar or when using [img] if image size limits are enabled.
If you set http://noc.gts.pl/100mb.gts?.gif as an avatar, the server will download a huge file.
It is possible to limit the size:
function getimagesize_limit($url, $limit)
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{
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global $phpbb_root_path;
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$tmpfilename = tempnam($phpbb_root_path . 'store/', unique_id() . '-');
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$fp = fopen($url, 'r');
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if (!$fp) return false;
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$tmpfile = fopen($tmpfilename, 'w');
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$size = 0;
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while (!feof($fp) && $size<$limit)
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{
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$content = fread($fp, 8192);
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$size += 8192; fwrite($tmpfile, $content);
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}
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fclose($fp);
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fclose($tmpfile);
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$is = getimagesize($tmpfilename);
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unlink($tmpfilename);
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return $is;
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}
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The size of remote upload should also be limited. The function uses fsockopen, so it's very easy to add a size limit.
- is duplicated by
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- Closed
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