lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [day] [month] [year] [list]
Date: 4 Jan 2007 21:35:33 -0000
Subject: Re: Re: [WEB SECURITY] Universal XSS with PDF files: highly dangerous

YMMV, but in our own testing of server-side defenses for Apache, we had to resort to the following to extract the anchor information:

# mod_rewrite defense
RewriteCond %{THE_REQUEST} .*\.pdf[^A-Za-z0-9._?&%-]
RewriteRule (.*\.(pdf)) $1 [R,L]

# mod_security defense 
SecRule REQUEST_URI_RAW: ".*\.pdf[^A-Za-z0-9._?&%-]" \
        "deny,log,status:502,id:951004,severity:2,msg:'DOM attack on static content'"

In the case of mod_rewrite, I had to use THE_REQUEST, which captures the entire 1st line of an HTTP request, not just the URI (hence capturing the anchor); in the case of mod_security, I think I just got lucky, I can't explain why REQUEST_URI_RAW worked while REQUEST_URI did not.  This was tested with Apache 2.0.59 and modsecurity-apache_2.0.4.

Powered by blists - more mailing lists