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TITLE:
gpEasy CMS "jsoncallback" Cross-Site Scripting Vulnerability

SECUNIA ADVISORY ID:
SA48994

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/48994/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=48994

RELEASE DATE:
2012-04-27

DISCUSS ADVISORY:
http://secunia.com/advisories/48994/#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/48994/

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=48994

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:
Haunt IT has discovered a vulnerability in gpEasy CMS, which can be
exploited by malicious people to conduct cross-site scripting
attacks.

Input passed via the "jsoncallback" parameter to index.php (when
"gpreq" is set to "json") is not properly sanitised before being
returned to the user. This can be exploited to execute arbitrary HTML
and script code in a user's browser session in context of an affected
site.

The vulnerability is confirmed in version 2.3.3. Prior versions may
also be affected.

SOLUTION:
Update to version 2.4.

PROVIDED AND/OR DISCOVERED BY:
Haunt IT

ORIGINAL ADVISORY:
http://hauntit.blogspot.com/2012/03/en-gpeasy-233-html-injection-xss.html

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.

Subscribe:
http://secunia.com/advisories/secunia_security_advisories/

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


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

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