TITLE:
RCBlog File Upload and Disclosure of Sensitive Information

SECUNIA ADVISORY ID:
SA18547

VERIFY ADVISORY:
http://secunia.com/advisories/18547/

CRITICAL:
Moderately critical

IMPACT:
Exposure of sensitive information, System access

WHERE:
>From remote

SOFTWARE:
RCBlog 1.x
http://secunia.com/product/6891/

DESCRIPTION:
Aliaksandr Hartsuyeu has reported two vulnerabilities and a security
issue in RCBlog, which can be exploited by malicious users to
potentially compromise a vulnerable system and by malicious people to
disclose sensitive information.

1) The problem is that user information is stored in text files in
the "data" and "config" directories inside the web root. This can be
exploited to disclose usernames and encrypted passwords, and other
user information.

2) Input passed to the "post" parameter in "index.php" isn't properly
verified, before being used to view files. This can be exploited to
view arbitrary files with the ".txt" file extension via directory
traversal attacks.

3) The problem is that administrators can upload arbitrary files to a
location inside the web root. This can e.g. be exploited to upload and
execute an arbitrary PHP script.

The vulnerabilities and the security issue have been reported in
version 1.0.3. Other versions may also be affected.

SOLUTION:
Edit the source code to ensure that input is properly verified, add
only trusted users as administrators, and restrict web access to the
"data" and "config" directories (e.g. with a .htaccess file).

Use another product.

PROVIDED AND/OR DISCOVERED BY:
Aliaksandr Hartsuyeu

ORIGINAL ADVISORY:
http://evuln.com/vulns/42/summary.html

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