![]() Attempt to directly access a protected page through the address bar in your browser to test using this method.įigure 4.4.4-1: Direct Request to Protected Page Parameter ModificationĪnother problem related to authentication design is when the application verifies a successful log in on the basis of a fixed value parameters. ![]() For example, if a user directly requests a different page via forced browsing, that page may not check the credentials of the user before granting access. If a web application implements access control only on the log in page, the authentication schema could be bypassed. There are several methods of bypassing the authentication schema that is used by a web application: Ensure that authentication is applied across all services that require it.In the application deployment phase, there may be issues during the application setup (installation and configuration activities) due to a lack in required technical skills or due to the lack of good documentation.In the development phase errors can include the incorrect implementation of input validation functionality or not following the security best practices for the specific language.In the design phase errors can include a wrong definition of application sections to be protected, the choice of not applying strong encryption protocols for securing the transmission of credentials, and many more.Problems related to the authentication schema can be found at different stages of the software development life cycle (SDLC), like the design, development, and deployment phases: This can be accomplished either by modifying the given URL parameter, by manipulating the form, or by counterfeiting sessions. In addition, it is often possible to bypass authentication measures by tampering with requests and tricking the application into thinking that the user is already authenticated. Negligence, ignorance, or simple understatement of security threats often result in authentication schemes that can be bypassed by simply skipping the log in page and directly calling an internal page that is supposed to be accessed only after authentication has been performed. While most applications require authentication to gain access to private information or to execute tasks, not every authentication method is able to provide adequate security. Testing the authentication schema means understanding how the authentication process works and using that information to circumvent the authentication mechanism. A common example of such a process is the log on process. In computer security, authentication is the process of attempting to verify the digital identity of the sender of a communication. Source: C:\Windows \Temp\\.Home > Latest > 4-Web Application Security Testing > 04-Authentication Testing Testing for Bypassing Authentication Schema ID Source: C:\Program Data\EasyS olutions\D etectUpdat e\DetectUp date.exeĬode function: 1_2_008A42 60 CryptQu eryObject, CertCloseS tore,Crypt MsgClose,C ryptMsgGet Param,Cert CloseStore ,CryptMsgC lose,Local Alloc,Cert CloseStore ,CryptMsgC lose,Crypt MsgGetPara m,LocalFre e,CertFind Certificat eInStore,Ĭode function: 1_2_008A36 90 CryptCA TAdminAcqu ireContext ,CreateFil eW,GetLast Error,Cryp tCATAdminR eleaseCont ext,CryptC ATAdminCal cHashFromF ileHandle, CryptCATAd minRelease Context,Cl oseHandle, _calloc,Cr yptCATAdmi nCalcHashF romFileHan dle,CryptC ATAdminRel easeContex t,_free,Cl oseHandle, swprintf,C ryptCATAdm inEnumCata logFromHas h,CryptCAT CatalogInf oFromConte xt,CryptCA TAdminRele aseCatalog Context,Wi nVerifyTru st,CryptCA TAdminRele aseCatalog Context,Wi nVerifyTru st,_free,C loseHandle ,CryptCATA dminReleas eContext,Ĭode function: 4_2_008A42 60 CryptQu eryObject, CertCloseS tore,Crypt MsgClose,C ryptMsgGet Param,Cert CloseStore ,CryptMsgC lose,Local Alloc,Cert CloseStore ,CryptMsgC lose,Crypt MsgGetPara m,LocalFre e,CertFind Certificat eInStore,Ĭode function: 4_2_008A36 90 CryptCA TAdminAcqu ireContext ,CreateFil eW,GetLast Error,Cryp tCATAdminR eleaseCont ext,CryptC ATAdminCal cHashFromF ileHandle, CryptCATAd minRelease Context,Cl oseHandle, _calloc,Cr yptCATAdmi nCalcHashF romFileHan dle,CryptC ATAdminRel easeContex t,_free,Cl oseHandle, swprintf,C ryptCATAdm inEnumCata logFromHas h,CryptCAT CatalogInf oFromConte xt,CryptCA TAdminRele aseCatalog Context,Wi nVerifyTru st,CryptCA TAdminRele aseCatalog Context,Wi nVerifyTru st,_free,C loseHandle ,CryptCATA dminReleas eContext, Uses Microsoft's Enhanced Cryptographic Provider Standard Non-Application Layer Protocol 2Įxfiltration Over Command and Control Channel Deobfuscate/Decode Files or Information 1
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