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jbruinaud / WebGoatNet

WebGoat .Net for demos
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CX Stored_XSS @ Content/ReadlineDoS.aspx.cs [master] #207

Open jbruinaud opened 4 years ago

jbruinaud commented 4 years ago

Stored_XSS issue exists @ Content/ReadlineDoS.aspx.cs in branch master

Method btnUpload_Click at line 14 of Content\ReadlineDoS.aspx.cs gets data from the database, for the ReadLine element. This element’s value then flows through the code without being properly filtered or encoded and is eventually displayed to the user in method btnUpload_Click at line 14 of Content\ReadlineDoS.aspx.cs. This may enable a Stored Cross-Site-Scripting attack.

Severity: High

CWE:79

Checkmarx

Lines: 23

Code (Line #23):

                    lblFileContent.Text += reader.ReadLine() + "<br />";