Reflected_XSS_All_Clients @ /02_02_WS_Cliente/src/main/java/com/curso/java/servlets/CadenasS.java

[oscardatastream]

Checkmarx (SAST): Reflected_XSS_All_Clients
Security Issue: Read More about Reflected_XSS_All_Clients
Checkmarx Project: oscardatastream/slackDatastream
Repository URL: https://github.com/oscardatastream/slackDatastream
Branch: master
Scan ID: c523472e-01c3-4305-b7dd-e80238456bde

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The method cadenas embeds untrusted data in generated output with cadena, at line 43 of /02_02_WS_Cliente/src/main/webapp/cadenas.jsp. This untrusted data is embedded into the output without proper sanitization or encoding, enabling an attacker to inject malicious code into the generated web-page.

The attacker would be able to alter the returned web page by simply providing modified data in the user input ""cadena"", which is read by the doGet method at line 47 of /02_02_WS_Cliente/src/main/java/com/curso/java/servlets/CadenasS.java. This input then flows through the code straight to the output web page, without sanitization. 

This can enable a Reflected Cross-Site Scripting (XSS) attack.

Result #1:
Severity: HIGH
State: TO_VERIFY
Status: RECURRENT
Attack Vector:

    1. ""cadena"": /02_02_WS_Cliente/src/main/java/com/curso/java/servlets/CadenasS.java[47,40]
    2. getParameter: /02_02_WS_Cliente/src/main/java/com/curso/java/servlets/CadenasS.java[47,39]
    3. cadena: /02_02_WS_Cliente/src/main/java/com/curso/java/servlets/CadenasS.java[47,10]
    4. cadena: /02_02_WS_Cliente/src/main/java/com/curso/java/servlets/CadenasS.java[81,34]
    5. getAttribute: /02_02_WS_Cliente/src/main/webapp/cadenas.jsp[30,48]
    6. cadena: /02_02_WS_Cliente/src/main/webapp/cadenas.jsp[30,10]
    7. cadena: /02_02_WS_Cliente/src/main/webapp/cadenas.jsp[43,-2]
    Review result in Checkmarx One: Reflected_XSS_All_Clients