Full Disclosure mailing list archives
Re[2]: NUL Character Evasion
From: 3APA3A <3APA3A () SECURITY NNOV RU>
Date: Fri, 16 Sep 2005 17:16:42 +0400
Dear Steffen Kluge, This is old news reported long time ago by ben moeckel (ben.moeckel at online.de), see http://www.security.nnov.ru/advisories/content.asp 9. Bypassing filters with special characters There are some characters client application may ignore silently. For Example, for HTML browsers: 0, 9, 10, 13, 173 for Opera 13, 10, 9, 0 for Internet Explorer by inserting characters with this codes into document it's possible to hide some dangerous tags from content filter. Reported by ben.moeckel at online.de --Friday, September 16, 2005, 10:25:06 AM, you wrote to full-disclosure () lists grok org uk: SK> On Tue, 2005-09-13 at 23:24 +0200, ju () heisec de wrote:
Internet Explorer ignores NUL characters -- i.e. ascii characters with the value 0x00 -- most security software does not.
SK> Interesting. Did you test this with Outlook as well? SK> Cheers SK> Steffen. -- ~/ZARAZA Есть там версии Отелло, где Дездемона душит Мавра. (Лем) _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/
Current thread:
- NUL Character Evasion ju (Sep 14)
- Re: NUL Character Evasion Steffen Kluge (Sep 15)
- Re[2]: NUL Character Evasion 3APA3A (Sep 16)
- <Possible follow-ups>
- Re: NUL Character Evasion Williams, James K (Sep 14)
- Re: NUL Character Evasion fd (Sep 15)
- Re: NUL Character Evasion Williams, James K (Sep 16)
- Re: NUL Character Evasion Steffen Kluge (Sep 15)