Home page logo

fulldisclosure logo Full Disclosure mailing list archives

CMS Made Simple: backend cross site scripting (XSS), CVE-2010-1482
From: Hanno Böck <hanno () hboeck de>
Date: Fri, 7 May 2010 14:42:16 +0200

CMS Made Simple: backend cross site scripting (XSS), CVE-2010-1482




CMS Made Simple 1.7.0 and earlier is vulnerable to cross site scripting in the
backend. The personal options page at admin/editprefs.php contains the field
date_format_string, which is not properly escaped and can be filled with
Javascript-code, e.g. "><script>alert(1)</script>.

As this page cannot be viewed by the admin or other users, this only allows
quite unlikely attack scenarios, so the impact should be considered very low.

Vendor has released 1.7.1, which filters out HTML-tags and restricts the field
size to 10 chars. Filtering out HTML-tags alone does not help, as one can
still use JavaScript event handlers (e.g. onMouseOver), but 10 chars doesn't
allow any useful code to be injected. The proper solution would be escaping
the output including quotes. So this is fixed, but it's not a very clean

Disclosure Timeline

2010-04-30: Vendor contacted
2010-04-30: Vendor replied
2010-05-01: Vendor released 1.7.1 with fix
2010-05-07: Published advisory


This vulnerability was discovered by Hanno Boeck, http://www.hboeck.de, of
schokokeks.org webhosting.

Hanno Böck              Blog:           http://www.hboeck.de/
GPG: 3DBD3B20           Jabber/Mail:    hanno () hboeck de

http://schokokeks.org - professional webhosting

Attachment: signature.asc
Description: This is a digitally signed message part.

Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
Hosted and sponsored by Secunia - http://secunia.com/

  By Date           By Thread  

Current thread:
  • CMS Made Simple: backend cross site scripting (XSS), CVE-2010-1482 Hanno Böck (May 07)
[ Nmap | Sec Tools | Mailing Lists | Site News | About/Contact | Advertising | Privacy ]