Concrete5 5.7.3.1 Cross Site Scripting

Concrete5 5.7.3.1 Cross Site Scripting

Concrete5 5.7.3.1 - Multiple XSS
Advisory ID: Concrete5 5.7.3.1 Cross Site Scripting

Concrete5 5.7.3.1 - Multiple XSS
Advisory ID: RO-15-002
CVE ID: CVE-2015-2250
Severity: Medium
Vendor: Concrete5
Product: Concrete5 CMS
Version: 5.7.3.1


Overview #

Multiple Cross-site Scripting (XSS) vulnerabilities exist in Concrete5 CMS version 5.7.3.1. These vulnerabilities allow remote attackers to inject arbitrary web script or HTML.


Vulnerability Details #

Affected Versions: 5.7.3.1 and earlier

Root Cause: Insufficient input validation and output encoding on multiple parameters allows XSS attacks.


Exploitation Requirements #

No authentication required for some vectors
Victim must visit crafted URLs or pages

Impact #

Remote attackers can exploit these vulnerabilities to:

Steal admin session cookies
Perform actions on behalf of users
Compromise the CMS installation

Proof of Concept #

Details available upon request.


Solution #

Upgrade to a patched version of Concrete5 that includes proper input sanitization and output encoding.


References #

CVE-2015-2250

Timeline:

[2015-01-01] - Discovered

Credits: Omar Kurt