exploit the possibilities
Home Files News &[SERVICES_TAB]About Contact Add New

acFreeProxy.txt

acFreeProxy.txt
Posted Nov 25, 2002
Authored by Matthew Murphy

acFreeProxy (aka "acfp") is an HTTP/1.x proxy for Microsoft Windows that generates error pages when unable to reach a destination host. The results of the error page do not have any input validation leaving it vulnerable to cross-site scripting attacks.

tags | web, xss
systems | windows
SHA-256 | b73cb37d7003a95b03e17334931602a4021c36c50e68d3f36d09ad572bddca2d

acFreeProxy.txt

Change Mirror Download
Product Information

acFreeProxy (aka "acfp") is an HTTP/1.x proxy for Microsoft Windows
environments. It offers caching, and several other features, and has a
plug-in format designed for extensibility. A flaw in the product may allow
attackers to execute content across domains.

Description

The proxy server may generate an error message if given a host that it
cannot reach, or some other exceptional condition. The error page generated
during this process does not have any input validation, and is vulnerable to
cross-site scripting. This allows an attacker to inject code as *any site*
the victim can visit, because this problem is in the proxy, and not a
specific site.

Impact

This vulnerability is significantly more dangerous than any site-specific
flaw, as it can be exploited to read content from any domain, instead of the
limited scope of a typical cross-site scripting flaw, where the site that is
flawed is the only site that can be impacted.

Exploit

http://www.hotmail.com:41997/%3CSCRIPT%3Ealert%28document%3EURL%29%3C/SCRIPT
%3E/

If a vulnerable proxy is being run, script execution begins.

I've also found bizarre crash behavior within acfp. When it accesses
www.hotmail.com it crashes for some reason that I have yet to isolate. I
believe that this may have something to do with empty entities in responses.
Any ideas?

Login or Register to add favorites

File Archive:

July 2022

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Jul 1st
    52 Files
  • 2
    Jul 2nd
    0 Files
  • 3
    Jul 3rd
    0 Files
  • 4
    Jul 4th
    0 Files
  • 5
    Jul 5th
    0 Files
  • 6
    Jul 6th
    0 Files
  • 7
    Jul 7th
    0 Files
  • 8
    Jul 8th
    0 Files
  • 9
    Jul 9th
    0 Files
  • 10
    Jul 10th
    0 Files
  • 11
    Jul 11th
    0 Files
  • 12
    Jul 12th
    0 Files
  • 13
    Jul 13th
    0 Files
  • 14
    Jul 14th
    0 Files
  • 15
    Jul 15th
    0 Files
  • 16
    Jul 16th
    0 Files
  • 17
    Jul 17th
    0 Files
  • 18
    Jul 18th
    0 Files
  • 19
    Jul 19th
    0 Files
  • 20
    Jul 20th
    0 Files
  • 21
    Jul 21st
    0 Files
  • 22
    Jul 22nd
    0 Files
  • 23
    Jul 23rd
    0 Files
  • 24
    Jul 24th
    0 Files
  • 25
    Jul 25th
    0 Files
  • 26
    Jul 26th
    0 Files
  • 27
    Jul 27th
    0 Files
  • 28
    Jul 28th
    0 Files
  • 29
    Jul 29th
    0 Files
  • 30
    Jul 30th
    0 Files
  • 31
    Jul 31st
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2022 Packet Storm. All rights reserved.

Hosting By
Rokasec
close