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Highly critical

LightBlog Multiple Vulnerabilities

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Release Date:  2008-10-22    Last Update:  2009-04-28    Views:  4,532

Secunia Advisory SA32345

Where:

From remote

Impact:

Security Bypass, Exposure of system information, Exposure of sensitive information, System access

Solution Status:

Unpatched

Software:

CVE Reference(s):

Description


Some vulnerabilities have been reported in LightBlog, which can be exploited by malicious people to disclose sensitive information, bypass certain security restrictions, or compromise a vulnerable system.

1) Input passed to the "username_post" parameter in login.php (when "password_post" is set) and the "Lightblog_username" cookie in check_user.php (when the "Lightblog_password" cookie is set) is not properly verified before being used to include files. This can be exploited to include arbitrary files from local resources via directory traversal attacks and URL-encoded NULL bytes.

Successful exploitation requires that "magic_quotes_gpc" is disabled.

The vulnerabilities are confirmed in version 9.8. Other versions may also be affected.

2) Input passed via parameters (e.g. "email_post") to register.php is not properly sanitised before being stored within a php file. This can be exploited to inject and execute arbitrary PHP code.

3) Input passed via the "Lightblog_username" cookie in check_user.php is not properly verified before being used to include files. This can be exploited to include arbitrary files from local resources via directory traversal attacks.

NOTE: This can further be exploited to gain access to the application by providing a specially crafted "Lightblog_username" cookie and to upload and execute arbitrary PHP code.

Vulnerabilities #2 and #3 are reported in version 9.9.2. Other versions may also be affected.


Solution:
Use another product.

Provided and/or discovered by:
1) JosS
2-3) EgiX

Original Advisory:
1) http://milw0rm.com/exploits/6797
2, 3) http://milw0rm.com/exploits/8543

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: LightBlog Multiple Vulnerabilities

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