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Bug #47220 segfault in dom_document_parser in recovery mode
Submitted: 2009-01-26 16:54 UTC Modified: 2009-01-26 20:04 UTC
From: felix-php at 7val dot com Assigned:
Status: Closed Package: DOM XML related
PHP Version: 5.2.8 OS: Debian Linux
Private report: No CVE-ID:
 [2009-01-26 16:54 UTC] felix-php at 7val dot com
A call to DOMDocument::load() or ::loadXML() in recovery mode leads to segmentation fault in dom_document_parser) when the XML declaration contains an unknown (and unrecoverable) encoding.

The segfault occurs in document.c +1690 when trying to access properties of the result document (ret), which is NULL in this case:

  if (ret->URL == NULL && ctxt->directory != NULL) {

Reproduce code:
$xml = '<?xml version="1.0" encoding="bad"?>';
$dom = new DOMDocument;
$dom->recover = true;
echo $dom->saveXML();

Expected result:
<?xml version="1.0"?>

Actual result:
Segmentation Fault


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 [2009-01-26 20:05 UTC]
This bug has been fixed in CVS.

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