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Arrow  Topic :

Apache (mod_proxy_ftp) Undefined Charset UTF-7 XSS Vulnerability


Arrow  SecurityAlert : 3526
Arrow  CVE : CVE-2008-0005
Arrow  SecurityRisk : Low  Security Risk Low  (About)
Arrow  Remote Exploit : Yes
Arrow  Local Exploit : Yes
Arrow  Exploit Given : No
Arrow  Credit : sp3x
Arrow  Published : 10.01.2008

Arrow  Affected Software : Apache 2.2.x (mod_proxy_ftp)
Apache 1.3.x
Apache 2.0.x



Arrow  Advisory Text :  

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

[SecurityReason - Apache (mod_proxy_ftp) Undefined Charset UTF-7 XSS
Vulnerability]

Author: sp3x

Date:
- - Written: 15.12.2007
- - Public: 10.01.2008

SecurityReason Research
SecurityAlert Id: 49

CVE: CVE-2008-0005
SecurityRisk: Low

Affected Software: Apache 2.2.x (mod_proxy_ftp)
Apache 1.3.x
Apache 2.0.x

Advisory URL: http://securityreason.com/achievement_securityalert/49
Vendor: http://httpd.apache.org

- --- 0.Description ---

The Apache HTTP Server Project is an effort to develop and maintain an
open-source HTTP server for modern operating systems including UNIX and
Windows NT. The goal of this project is to provide a secure, efficient and
extensible server that provides HTTP services in sync with the current HTTP
standards.

Apache has been the most popular web server on the Internet since April
1996. The November 2005 Netcraft Web Server Survey found that more than 70%
of the web sites on the Internet are using Apache, thus making it more
widely used than all other web servers combined.

mod_proxy_ftp : http://httpd.apache.org/docs/2.2/mod/mod_proxy_ftp.html

- From apache site : "It provides support for the proxying FTP sites. Note
that FTP support is currently limited to the GET method."

- --- 1. Apache Undefined Charset UTF-7 XSS Vulnerability ---

The XSS(UTF7) exist in mod_proxy_ftp.c . Charset is not defined
and we can provide XSS attack using ";" char in URL by setting Charset to
UTF-7.

- --- 2. Exploit ---

SecurityReason is not going to release a exploit to the general public.
Exploit was provided and tested for Apache Team .

- --- 3. How to fix ---

Update to Apache 2.2.7-dev
Apache 1.3.40-dev
Apache 2.0.62-dev

- --- 4. References ---

Apache2 Undefined Charset UTF-7 XSS Vulnerability :
http://securityreason.com/achievement_securityalert/46 by Maksymilian
Arciemowicz

- --- 5. Greets ---

For: Maksymilian Arciemowicz ( cXIb8O3 ), Infospec, pi3, p_e_a, mpp

- --- 6. Contact ---

Author: sp3x
Email: sp3x [at] securityreason [dot] com
GPG: http://securityreason.com/key/sp3x.gpg
http://securityreason.com
http://securityreason.pl
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