• Summary
• Description
• PoC/ Exploit
• Solution

Description - Multiple flaws in Leif M. Wright Blog

Multiple Vulnerabilities found in Leif M. Wright's Blog script.

Exploit

Available

Solution

Not available - check vendor's website

1. Sensitive Information Disclosure and Authentication Bypass

All "txt" files isn't protected by htaccess(or any other ways) in default installiation. This can be used to retrieve administrator's password from config file.

2. Cookie Authentication Bypass

"blog.cgi" script dont make password comparisson when identifying administrator by cookie.

3. Shell Command Execution

Administrator has an ability to edit blog configuration including full path to sendmail program. This can be used to execute arbitrary shell commands.

System access is possible.

4. 'Referer' and 'User-Agent' Cross-Site Scripting

Environment variables HTTP_REFERER and HTTP_USER_AGENT are not properly sanitized. This can be used to post HTTP query with fake Referer or User-Agent values which may contain arbitrary html or script code. This code will be executed when administrator will open "Log" page.