KirbyCMS Cross Site Scripting

Risk: Low
Local: No
Remote: Yes

CVSS Base Score: 3.5/10
Impact Subscore: 2.9/10
Exploitability Subscore: 6.8/10
Exploit range: Remote
Attack complexity: Medium
Authentication: Single time
Confidentiality impact: None
Integrity impact: Partial
Availability impact: None

# Exploit Title: KirbyCMS <2.5.7 Stored Cross Site Scripting # Vendor Homepage: # Software Link: # Discovered by: Ishaq Mohammed # Contact: # Website: # Category: webapps # Platform: PHP # CVE: CVE-2017-16807 1. Description A cross-site Scripting (XSS) vulnerability in Kirby Panel before 2.3.3, 2.4.x before 2.4.2, and 2.5.x before 2.5.7 exists when displaying a specially prepared SVG document that has been uploaded as a content file. 2. Proof of Concept Steps to Reproduce: Log in as an Editor and click on Site Options Add the malicious .svg file which contains the javascript to the Site Login to another browser with Admin Credentials. Click on Site Options. Click on the newly added .svg file 3. Reference 4. Solution The vulnerability is patched by the vendor in the version 2.5.7. -- Best Regards, Ishaq Mohammed

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