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TITLE:
Contao "X_FORWARDED_FOR" Script Insertion Vulnerability

SECUNIA ADVISORY ID:
SA42899

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/42899/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=42899

RELEASE DATE:
2011-01-14

DISCUSS ADVISORY:
http://secunia.com/advisories/42899/#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/42899/

ONLY AVAILABLE IN CUSTOMER AREA:
 * Authentication Level
 * Report Reliability
 * Secunia PoC
 * Secunia Analysis
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https://ca.secunia.com/?page=viewadvisory&vuln_id=42899

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:
A vulnerability has been discovered in Contao, which can be exploited
by malicious people to conduct script-insertion attacks.

Input passed via the "X_FORWARDED_FOR" HTTP header is not properly
sanitised before being used when submitting a comment. This can be
exploited to insert arbitrary HTML and script code, which will get
executed in a user's browser session in context of an affected site
when the malicious data is being viewed.

The vulnerability is confirmed in version 2.9.2. Prior versions may
also be affected.

SOLUTION:
Update to version 2.9.3.

PROVIDED AND/OR DISCOVERED BY:
David Vieira-Kurz, MajorSecurity

ORIGINAL ADVISORY:
Contao:
http://www.contao.org/news/items/contao-2_9_3.html
http://dev.contao.org/issues/2751

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:
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