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TITLE:
FlatnuX CMS Cross-Site Request Forgery and Script Insertion
Vulnerabilities

SECUNIA ADVISORY ID:
SA40136

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/40136/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=40136

RELEASE DATE:
2010-06-10

DISCUSS ADVISORY:
http://secunia.com/advisories/40136/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
 * Last Update
 * Popularity
 * Comments
 * Criticality Level
 * Impact
 * Where
 * Solution Status
 * Operating System / Software
 * CVE Reference(s)

http://secunia.com/advisories/40136/

ONLY AVAILABLE IN CUSTOMER AREA:
 * Authentication Level
 * Report Reliability
 * Secunia PoC
 * Secunia Analysis
 * Systems Affected
 * Approve Distribution
 * Remediation Status
 * Secunia CVSS Score
 * CVSS

https://ca.secunia.com/?page=viewadvisory&vuln_id=40136

ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:
 * AUTOMATED SCANNING

http://secunia.com/vulnerability_scanning/personal/
http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/

DESCRIPTION:
High-Tech Bridge SA has discovered some vulnerabilities in FlatnuX
CMS, which can be exploited by malicious users to conduct script
insertion attacks and by malicious people to conduct cross-site
request forgery attacks.

1) The application allows users to perform certain actions via HTTP
requests without performing any validity checks to verify the
requests. This can be exploited to e.g. add an administrative user
tricking a logged in administrator into visiting a malicious web
site.

2) Input passed via the "head" parameter to index.php (when "mod" is
set to "news") is not properly sanitised before being displayed to
the user. This can be exploited to insert arbitrary HTML and script
code, which will be executed in a user's browser session in context
of an affected site when the malicious data is being viewed.

The vulnerabilities are confirmed in version 2010-06-09. Other
versions may also be affected.

SOLUTION:
Do not browse untrusted websites or follow untrusted links while
logged in to the application. Edit the source code to ensure that
input is properly sanitised.

PROVIDED AND/OR DISCOVERED BY:
High-Tech Bridge SA

ORIGINAL ADVISORY:
http://www.htbridge.ch/advisory/xss_vulnerability_in_flatnux_cms.html
http://www.htbridge.ch/advisory/xss_vulnerability_in_flatnux_cms_news_module.html

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXPLOIT:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

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About:
This Advisory was delivered by Secunia as a free service to help
private users keeping their systems up to date against the latest
vulnerabilities.

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