Eggblog v3.1.0 XSS Vulnerability

2007-11-12T00:00:00
ID SECURITYVULNS:DOC:18389
Type securityvulns
Reporter Securityvulns
Modified 2007-11-12T00:00:00

Description

H - Security Labs
Eggblog v3.1.0 Security Advisory ID : HSEC#20071111 General Information


Name : EggBlog v.3.1.0 Vendor HomePage :http://sourceforge.net/projects/eggblog/ Platforms : PHP && MySQL Vulnerability Type : Input Validation Error

Timeline

08 October 2007 -- Vendor Contacted
30 October 2007 -- Vendor Replied 11 November 2007 -- New Release 11 November 2007 -- Advisory Released

What is Eggblog

eggblog is a free PHP & MySQL blogging package. Features include an internal search engine,

photo albums, forums, plug-ins, guest comments to blog articles, automatic monthly archiving

of blog articles and RSS XML feeds for both the blog and forums. I discovered the security holes when I was testing it for my personel web blog.

Vulnerability Overview

The script is vulnerable to XSS attacks.

Details About Vulnerability

XSS Vulnerability(home/rss.php)

At the rss.php line 6-7; there are unfiltered PHP_SELFs that can be used for XSS attacks.

<a

href=\"../rss/blog.php\">".$_SERVER['SERVER_NAME'].str_replace("/home/rss.php","",$_SERVER['

PHP_SELF'])."/rss/blog.php</a></li> <a

href=\"../rss/topics.php\">".$_SERVER['SERVER_NAME'].str_replace("/home/rss.php","",$_SERVER

['PHP_SELF'])."/rss/topics.php</a></li>

The attacker can succesfully launch XSS attacks with loading payload on to the URL after the

home\rss.php. For example : http://www.example.com/home/rss.php/<script>alert(1)</script>

Solutions

Download the new release : EggBlog v3.1.1

Credits

The vulnerabilities found on 08 October 2007 by Mesut Timur <mesut@h-labs.org> H - Security Labs , http://www.h-labs.org Gebze Institue of Technology,Computer Engineering,http://www.gyte.edu.tr

References

http://sourceforge.net/forum/forum.php?forum_id=753622 http://www.eggblog.net http://sourceforge.net/projects/eggblog/ Original Advisory : http://www.h-labs.org/blog/2007/11/11/eggblog_v3_1_0_xss_issues.html

Mesut TIMUR http://www.h-labs.org H - Security Labs Gьvenlik Editцrь GYTE Bilgisayar Mьhendisligi