mailing list archives
Re: double dot vulnerability on a site running Informix database.
From: "Randolf Richardson" <randy () inter-corporate com>
Date: Tue, 27 Nov 2001 14:04:00 -0800
I found a doubledot vulnerability on a site running
Informix database. I can read of any file on the
system by putting /../ into the url. But so far I have
only found two sites with this problem.
The site is running Netscape-Enterprise/4.0 on
Solaris according to Netcraft.com
I have tested this on Apache 1.3.12/Solaris 7/webdriver 4.10.UC1,
Netscape Enterprise 3.6/NT4/webdriver 4.10.TC1, IIS 5.0/Win2K/webdriver
4.11.TC1, Apache 1.3.12/Linux/webdriver 4.10.UC1, running on Informix
Universal Server 9.2x on Linux, NT4 and Win2K with the web datablade
4.x. All do not have this problem.
All the platforms I have tested simply close the connection immediately,
giving a zero-sized reply. I also tested using MIvalObj= instead of
LO=, MIvalObj gives a 500 reply.
Apache v1.3.22 running on Novell NetWare returns a "Bad request"
error message, so it's not vulnerable here either. I suspect that Apache is secure
in this regard since the OS has very little to do with this type of exploit.
Randolf Richardson - rr () 8x ca
Inter-Corporate Computer & Network Services, Inc.
Vancouver, British Columbia, Canada
"Radioactive cats have 18 half-lives."