Full Disclosure mailing list archives

Product: 3DSecure 2.0
Manufacturer: Redsys
Affected Version(s): 3DSecure 2.0 3DS Method Authentication
Tested Version(s): 3DSecure 2.0 3DS Method Authentication
Vulnerability Type: Cross-Site Scripting (XSS)
Risk Level: Medium
Solution Status: Not yet fixed
Manufacturer Notification: 2024-01-17
Solution Date: N/A
Public Disclosure: 2024-09-17
CVE Reference: CVE-2024-25282

Overview:
3DSecure 2.0 is vulnerable to Cross-Site Scripting (XSS) in its 3DSMethod Authentication. This vulnerability allows 
remote attackers to hijack the form action and change the destination website via the params parameter, which is base64 
encoded and improperly sanitized.

Vulnerability Details:
The issue arises because the params parameter in the 3DSMethod Authentication is not properly sanitized or validated 
before being processed. Attackers can inject arbitrary HTML elements into the DOM, modifying the website's appearance 
or executing malicious code in the victim's browser. Additionally, the integrity of the base64-encoded information is 
not checked, making it vulnerable to manipulation in a man-in-the-middle attack.

Proof of Concept (PoC):
By altering the params parameter in the request URL, an attacker can modify base64-encoded values and inject malicious 
code. For example:

https://[REDACTED]/[REDACTED]/rest/online/[REDACTED]/redirect?action=challenge&txn=[REDACTED]&params=[REDACTED]";

Solution:
Currently, no solution is available. Redsys has been notified of the issue, but no patch has been released as of the 
date of this advisory.

References:
OWASP Web Security Testing Guide: Reflected Cross-Site Scripting

Discoverer:
Reported by Rubén López Herrera

________________________________

Este mensaje y sus adjuntos se dirigen exclusivamente a su destinatario, puede contener información privilegiada o 
confidencial y es para uso exclusivo de la persona o entidad de destino. Si no es usted. el destinatario indicado, 
queda notificado de que la lectura, utilización, divulgación y/o copia sin autorización puede estar prohibida en virtud 
de la legislación vigente. Si ha recibido este mensaje por error, le rogamos que nos lo comunique inmediatamente por 
esta misma vía y proceda a su destrucción.

The information contained in this transmission is confidential and privileged information intended only for the use of 
the individual or entity named above. If the reader of this message is not the intended recipient, you are hereby 
notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have 
received this transmission in error, do not read it. Please immediately reply to the sender that you have received this 
communication in error and then delete it.

Esta mensagem e seus anexos se dirigem exclusivamente ao seu destinatário, pode conter informação privilegiada ou 
confidencial e é para uso exclusivo da pessoa ou entidade de destino. Se não é vossa senhoria o destinatário indicado, 
fica notificado de que a leitura, utilização, divulgação e/ou cópia sem autorização pode estar proibida em virtude da 
legislação vigente. Se recebeu esta mensagem por erro, rogamos-lhe que nos o comunique imediatamente por esta mesma via 
e proceda a sua destruição
_______________________________________________
Sent through the Full Disclosure mailing list
https://nmap.org/mailman/listinfo/fulldisclosure
Web Archives & RSS: https://seclists.org/fulldisclosure/

Current thread:

• CVE-2024-25282 - RedSys - 3DSecure 2.0 is vulnerable to Cross-Site Scripting (XSS) in its 3DSMethod Authentication RUBEN LOPEZ HERRERA (Sep 11)