A cross-site scripting (XSS) attack can cause arbitrary code (javascript) to run in a user’s browser while the browser is connected to a trusted web site. The application targets your application’s users and not the application itself, but it uses your application as the vehicle for the attack. XSS payload is executed whenever the user submits the crafted POST request with XSS Payload in Openfire 4.4.4 Product.
Securin Zero-Days
CVE-2019-20363 – Multiple Reflected Cross-Site Scripting in Openfire Product
Severity:Medium
Vendor
Openfire
Affected Product
Ignite Realtime
CVE
CVE-2019-20363
Securin ID
2019-CSW-12-1033
Status
Fixed
Date
December 31, 2019
Description
Proof of Concept (POC):
The following vulnerability is tested on Openfire version 4.4.4 Product.
Issue 01: Reflected cross-site scripting:
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Figure 01: Save the import CA certificate alias information (here Alias is ‘reflected XSS’).
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Figure 02: Add XSS payload to the variable “Alias.”
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Figure 03: HTTP Response for the modified “alias” variable with the XSS payload.
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Figure 04: Injected XSS payload, “><script>alert(document.cookie)</script>gets reflected in the browser response.
Impact
- Stealing cookies
- End-user files disclosure.
- Redirection of the user to some other page or site.
Remediations
Perform context-sensitive encoding of untrusted input before it is echoed back to a browser by using an encoding library. Implement input validation for special characters on all the variables that are reflecting to the browser and storing it in the database. Implement client-side validation.
Timeline
Dec 30, 2019: Vulnerability Discovered in OpenFire
Dec 31, 2019: Vulnerability Reported to Vendor
Dec 31, 2019: Vendor Responded
Dec 31, 2019: Vendor Released Fix
Jan 08, 2020: CVE Assigned