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Message-ID: <4A9E2DEB.7090107@keamera.org> Date: Wed, 02 Sep 2009 10:33:47 +0200 From: Guido Landi <lists@...mera.org> To: Vladimir '3APA3A' Dubrovin <3APA3A@...URITY.NNOV.RU> Cc: full-disclosure@...ts.grok.org.uk, bugtraq@...urityfocus.com, Thierry Zoller <Thierry@...ler.lu> Subject: Re: Microsoft Internet Information Server ftpd zeroday no, MKDIR is *not* required, also write access is *not* required. Assuming a directory with a name that starts with "A" exists and that is at least 14 chars long, this pattern will trigger the overflow: NLST [Ax206]*/../A*/../A*/../A*/../A*/../A*/../A*/../A*/\r\n At least on win2k3. Therefore, the workarounds for kb975191 on microsoft.com are wrong. Guido Landi Vladimir '3APA3A' Dubrovin wrote: > Dear Thierry Zoller, > > I think yes, MKDIR is required. It should be variation of > S99-003/MS02-018. fuzzer should be very smart to create directory and > user both oversized buffer and ../ in NLST - it makes path longer than > MAX_PATH with existing directory. > > --Monday, August 31, 2009, 8:21:12 PM, you wrote to full-disclosure@...ts.grok.org.uk: > > > TZ> Confirmed. > > TZ> Ask yourselves why your fuzzers haven't found that one - Combination of > TZ> MKDIR are required before reaching vuln code ? > > > > > _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/
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