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TITLE:
Winn Guestbook "name" Script Insertion Vulnerability

SECUNIA ADVISORY ID:
SA47391

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/47391/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=47391

RELEASE DATE:
2011-12-30

DISCUSS ADVISORY:
http://secunia.com/advisories/47391/#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/47391/

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=47391

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 Winn Guestbook, which can be
exploited by malicious people to conduct script insertion attacks.

Input passed via the "name" parameter to index.php is not properly
sanitised in the "addPost()" function in data/functions.php before
being used. 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 vulnerability is confirmed in version 2.4.8c. Other versions may
also be affected.

SOLUTION:
Update to version 2.4.8d.

PROVIDED AND/OR DISCOVERED BY:
G13.

ORIGINAL ADVISORY:
http://code.google.com/p/winn-guestbook/issues/detail?id=34

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXPLOIT:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

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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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Definitions: (Criticality, Where etc.)
http://secunia.com/advisories/about_secunia_advisories/


Please Note:
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Secunia NEVER sends attached files with advisories.
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