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I did not apply for a CVE identifier because there are folks who would argue that the conditions described below do not qualify as a "vulnerability." I must confess I'm ignorant of the CVE guidelines surrounding such a situation. Any further information or clarification would be greatly appreciated. Justin C. Klein Keane http://www.MadIrish.net The digital signature on this message can be confirmed using the public key at http://www.madirish.net/gpgkey On 04/27/2010 01:09 PM, Henri Salo wrote: > On Tue, 27 Apr 2010 12:07:17 -0400 > "Justin C. Klein Keane" <[email protected]> wrote: > > Description of Vulnerability: > ----------------------------- > Drupal (http://drupal.org) is a robust content management system (CMS) > written in PHP and MySQL. The Drupal Better Formats module > (http://drupal.org/project/better_formats) contains a cross site > scripting (XSS) vulnerability due to the fact that it fails to > sanitize format names before display. > > Systems affected: > ----------------- > Drupal 6.16 with Better Formats 6.x-1.2 was tested and shown to be > vulnerable > > Impact > ------ > User could inject arbitrary scripts into pages affecting site users. > This could result in administrative account compromise leading to web > server process compromise. > > Mitigating factors: > ------------------- > In order to execute arbitrary script injection malicious users must > have 'Administer filters' permission. The Drupal security team has > classified vulnerabilities that require this permission > (http://drupal.org/node/475848) as "display bugs" because access to > this permission allows for alteration of input specifications that > could allow users with permissions to create content to craft > arbitrary PHP. However, in a situation where a user had "administer > filters" permission but could not create content this vulnerability > could be used to attack other Drupal users. > > Patch: > ------------------------------------------ > Applying the following patch mitigates this issue in version 6.x-1.2. > > --- better_formats/better_formats.module 2010-02-05 > 08:59:18.000000000 -0500 > +++ better_formats/better_formats.module 2010-04-27 > 11:35:53.444189426 -0400 @@ -537,7 +537,7 @@ function > better_formats_filter_form($val > > $form = array( > '#type' => 'fieldset', > - '#title' => $fieldset_title, > + '#title' => check_plain($fieldset_title), > '#collapsible' => $collapsible, > '#collapsed' => $collapsed, > '#weight' => $weight, > @@ -551,7 +551,7 @@ function better_formats_filter_form($val > $parents_for_id = array_merge($parents, > array($format->format)); $form[$format->format] = array( > '#type' => 'radio', > - '#title' => $format->name, > + '#title' => check_plain($format->name), > '#default_value' => $default, > '#return_value' => $format->format, > '#parents' => $parents, > > Have you requested CVE-identifier for this vulnerability? > --- > Henri Salo > _______________________________________________ > Full-Disclosure - We believe in it. > Charter: http://lists.grok.org.uk/full-disclosure-charter.html > Hosted and sponsored by Secunia - http://secunia.com/ -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) Comment: Using GnuPG with Fedora - http://enigmail.mozdev.org/ iPwEAQECAAYFAkvXNdUACgkQkSlsbLsN1gDrdAb/ZauQapPp4xQ25ACnNrEPHU+8 hKoAmpX3fE5Vfwd86ybEZxyXwks0Lj6YXtGcoYzzkNCsmRCLQC1xhw00RlAHiHEp hTp2gukgdi67KJsRRhoKHV5IKl99uetF/Z7KO6DUkN9v9N33ss/L4JlSn+MQf3Hg F3zSTvVMudv38+hSGVagOcNRh03iyeAbvG9VqkpKOhRJJ0NlNCa0qizDXRDDvgF3 R/nXKIOkpCUtdCPo9sDdEZzaEQwZlgzRD78E//NJwkKaaBUQeNylCPL3GDRsywYf K2pPUCdVGEnqsxoEwnY= =+rXU -----END PGP SIGNATURE----- _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/
