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  • WebSockets authentication

    - by Tomi
    What are the possible ways to authenticate user when websocket connection is used? Example scenario: Web based multi-user chat application through encrypted websocket connection. How can I ensure (or guarantee) that each connection in this application belongs to certain authenticated user and "can't be" exploited by false user impersonation during the connection.

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  • Good articles to read on SSL and HTTPS?

    - by Igor Romanov
    I had a problem with accepting invalid SSL certificate in my iPhone program. That problem is solved now, however I came to understanding that I have very abstract idea on how exactly the whole thing is working: how web browser is verifying that received certificate is really for host it communicates to and not faked by same party in the middle? if browser talks to some 3rd party (CA?) to do certificate check? and many other questions... Would someone please recommend good source of information with in-depth enough description of how all parts click together?

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  • What information should I log if I detect that my site is under attack?

    - by Abe Miessler
    In the code below if I get into the if statement I can safely say my site is under attack. What information is it a good idea to log? Any recommendations on actions that can be taken to minimize the damage at this point? protected void btn_Search_Click(object sender, EventArgs e) { if(tb_SearchBox.Text.Length > tb_SearchBox.MaxLength) { //What should i log? //What actions should I take? } //Otherwise search }

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  • Kohana v3, automatically escape illegal characters?

    - by Dom
    Quick question, does Kohana (version 3) automatically escape data that is passed into ORM::factory..... (and everywhere else that has to do with the database)? For example: $thread = ORM::factory('thread', $this->request->param('id')); Would the data passed in the second argument be auto-escaped before it goes in the SQL query or do I have to manually do it? Probably a stupid question and it's better to be safe than sorry, but yeah... I usually do manually escape the data, but I want to know if Kohana does this for me? Thanks

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  • Invoke an action that is using ASP.NET MVC [Authorize] from outside the application

    - by Nate Bross
    Is this possible? I'd like to expose a URL (action) such as http://mysever/myapp/UpdateHeartbeat/. In my MVC application it looks like [Authorize] [AcceptsVerbs(HttpVerbs.Post)] public ActionResult UpdateHeartbeat() { // update date in DB to DateTime.Now } Now, in my MVC application the user has logged in via FORMS authentication and they can execute that action to their hearts content. What I want to do, is hit that URL progromatically (as part of an API that I wouldl like to build) -- is there a way I can do that without removing the [Authorize] attribute and adding username/password as parameters to the POST?

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  • extracting secrets from an embedded chip

    - by Will
    I am looking at an embedded system where secrets are stored in flash that is internal to the chip package, and there is no physical interface to get that information out - all access to this flash is policed by program code. All DMA attacks and JTAG and such are disabled. This seems to be a common locked-down configuration for system-on-a-chip. How might an attacker recover the secrets in that Flash? I understand they can fuzz for vulnerabilities in the app code and exploit it, that there could be some indistinct general side channel attack or something. But how would an attacker really go about trying to recover those keys? Are there viable approaches for a determined attacker to somehow shave-down the chip or some kind of microscope attack?

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  • Sql Server copying table information between databases

    - by Andrew
    Hi, I have a script that I am using to copy data from a table in one database to a table in another database on the same Sql Server instance. The script works great when I am connected to the Sql Server instance as myself as I have dbo access to both databases. The problem is that this won't be the case on the client's Sql Server. They have seperate logins for each database (Sql Authentication Logins). Does anyone know if there is a way to run a script under these circumstances. The script would be doing something like. use sourceDB Insert targetDB.dbo.tblTest (id, test_name) Select id, test_name from dbo.tblTest Thanks

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  • iphone secure network identification

    - by CocoaNewBee
    Hello!!! can anyone tell me (code sample woudl be awesome) how to get the the secure wi-fi userid and password for the current logged user on the iphone for example: Wi-fi settings for a network using WPA2 Enterprise (network/username/password) how can I found out who's logged for said network ?? Thanks in advance!!! Cheers

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  • How do I secure all the admin actions in all controllers in cakePHP

    - by Gaurav Sharma
    Hello Everyone, I am developing an application using cakePHP v 1.3 on windows (XAMPP). Most of the controllers are baked with the admin routing enabled. I want to secure the admin actions of every controller with a login page. How can I do this without repeating much ? One solution to the problem is that "I check for login information in the admin_index action of every controller" and then show the login screen accordingly. Is there any better way of doing this ? The detault URL to admin (http://localhost/app/admin) is pointing to the index_admin action of users controller (created a new route for this in routes.php file) Thanks

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  • What's the best way to detect web applications attacks ?

    - by paulgreg
    What is the best way to survey and detect bad users behavior or attacks like deny of services or exploits on my web app ? I know server's statistics (like Awstats) are very useful for that kind of purpose, specially to see 3XX, 4XX and 5XX errors (here's an Awstats example page) which are often bots or bad intentioned users that try well-known bad or malformed URLs. Is there others (and betters) ways to analyze and detect that kind of attack tentative ? Note : I'm speaking about URL based attacks, not attacks on server's component (like database or TCP/IP).

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  • Which SHA-256 is correct? The Java SHA-256 digest or the Linux commandline tool

    - by Peter Tillemans
    When I calculate in Java an SHA-256 of a string with the following method I get : 5e884898da2847151d0e56f8dc6292773603dd6aabbdd62a11ef721d1542d8 on the commandline I do : echo "password" | sha256sum and get 5e884898da28047151d0e56f8dc6292773603d0d6aabbdd62a11ef721d1542d8 if we compare these more closely I find 2 subtle differences 5e884898da2847151d0e56f8dc6292773603dd6aabbdd62a11ef721d1542d8 5e884898da28047151d0e56f8dc6292773603d0d6aabbdd62a11ef721d1542d8 or : 5e884898da28 47151d0e56f8dc6292773603d d6aabbdd62a11ef721d1542d8 5e884898da28 0 47151d0e56f8dc6292773603d 0 d6aabbdd62a11ef721d1542d8 Which of the 2 is correct here?

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  • How does XmlSiteMapProvider check user to be in specific role?

    - by abatishchev
    I roll my own SiteMapProvider inheriting System.Web.XmlSiteMapProvider. I want to override logic of checking user to be in a role specified in siteMapNode's property roles: <siteMapNode url="Add.aspx?type=user" title="Add user" roles="admin" /> How can I do that? Which class's member does XmlSiteMapProvider call to check that if securityTrimmingEnabled="true"?

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  • How do I send email over SMTP with SSL using Java client?

    - by Ido
    I need to send email over smtp with ssl using java client. I'm not sure how to do that. If I have my server certificate installed on my Windows machine, how do I use it? If I want it to work on a non-Windows machine, do I need to get the certificates in a different way? BTW: If the SMTP server that I use is using SSL, can I be sure that it will send the mail to the recipient using SSL?

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  • How important is it to use SSL?

    - by Mark
    Recently I installed a certificate on the website I'm working on. I've made as much of the site as possible work with HTTP, but after you log in, it has to remain in HTTPS to prevent session hi-jacking, doesn't it? Unfortunately, this causes some problems with Google Maps; I get warnings in IE saying "this page contains insecure content". I don't think we can afford Google Maps Premier right now to get their secure service. It's sort of an auction site so it's fairly important that people don't get charged for things they didn't purchase because some hacker got into their account. All payments are done through PayPal though, so I'm not saving any sort of credit card info, but I am keeping personal contact information. Fraudulent charges could be reversed fairly easily if it ever came to that. What do you guys suggest I do? Should I take the bulk of the site off HTTPS and just secure certain pages like where ever you enter your password, and that's it? That's what our competition seems to do.

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  • RESTFul, statelesness and sessions

    - by Per Arneng
    RESTFul service has a rule that it should be stateless. By beeing that it does not allow a session to be created and maintained by sending a session key between the client and the server and then holding a session state on the server. If i look at the definition in wikipedia of stateless server http://en.wikipedia.org/wiki/Stateless_server "A stateless server is a server that treats each request as an independent transaction that is unrelated to any previous request" It states that it should be unrelated to any previous request. In practice this means that any type of authentication will be comparing the credentials of a user to a state on the server that was created by a previous operation. So a service called login is related to and dependent on the state that has been created by previous requests (ex: create_user and/or change_password). In my view you are breaking statelessnes by doing authentication. My point is that people are complaining about having sessions in RESTFul is breaking statelesness but doing authentication is also breaking the same rule. What do you think?

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  • Create x509 certificate with openssl/makecert tool

    - by Zé Carlos
    I'm creating a x509 certificate using makecert with the following parameters: makecert -r -pe -n "CN=Client" -ss MyApp I want to use this certificate to encrypt and decrypt data with RSA algoritm. I look to generated certificate in windows certificate store and everything seems ok (It has a private key, public key is a RSA key with 1024 bits and so on..) Now i use this C# code to encrypt data: X509Store store = new X509Store("MyApp", StoreLocation.CurrentUser); store.Open(OpenFlags.ReadOnly); X509Certificate2Collection certs = store.Certificates.Find(X509FindType.FindBySubjectName, "Client", false); X509Certificate2 _x509 = certs[0]; using (RSACryptoServiceProvider rsa = (RSACryptoServiceProvider)_x509.PrivateKey) { byte[] dataToEncrypt = Encoding.UTF8.GetBytes("hello"); _encryptedData = rsa.Encrypt(dataToEncrypt, true); } When executing the Encrypt method, i receive a CryptographicException with message "Bad key". I think the code is fine. Probably i'm not creating the certificate properly. Any comments? Thanks ---------------- EDIT -------------- If anyone know how to create the certificate using OpenSsl, its also a valid answer for me.

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  • How does XmlSiteMapProvider check user to be in specified role?

    - by abatishchev
    I roll my own SiteMapProvider inheriting System.Web.XmlSiteMapProvider. I want to override logic of checking user to be in a role specified in siteMapNode's property roles: <siteMapNode url="Add.aspx?type=user" title="Add user" roles="admin" /> How can I do that? Which class's member does XmlSiteMapProvider call to check that if securityTrimmingEnabled="true"?

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  • Reported error code considered SQL Injection?

    - by inquam
    SQL injection that actually runs a SQL command is one thing. But injecting data that doesn't actually run a harmful query but that might tell you something valuable about the database, is that considered SQL injection? Or is it just used as part to construct a valid SQL injection? An example could be set rs = conn.execute("select headline from pressReleases where categoryID = " & cdbl(request("id")) ) Passing this a string that could not be turned into a numeric value would cause Microsoft VBScript runtime error '800a000d' Type mismatch: 'cdbl' which would tell you that the column in question only accepts numeric data and is thus probably of type integer or similar. I seem to find this in a lot of pages discussing SQL injection, but don't really get an answer if this in itself is considered SQL injection. The reason for my question is that I have a scanning tool that report a SQL injection vulnerability and reports a VBScript runtime error '800a000d' as the reason for the finding.

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  • How to restrict access to my web service?

    - by Hank
    I have http://example.com/index.html, which from within the HTML uses JavaScript to call a web services at http://example.com/json/?a=...&b=... The web service returns to index.html a JSON array of information to then be displayed on index.html. Since anyone can view the source code for index.html and see how I'm calling the JSON web services (http://example.com/json/), how do I prevent people from calling my JSON web service directly? Since the web service is essentially an open read into my database, I don't want people to abuse the web service and start DoS my server, fetching more information than they should, etc..

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  • How to retreive SID's byte array

    - by rursw1
    Hello experts, How can I convert a PSID type into a byte array that contains the byte value of the SID? Something like: PSID pSid; byte sidBytes[68];//Max. length of SID in bytes is 68 if(GetAccountSid( NULL, // default lookup logic AccountName,// account to obtain SID &pSid // buffer to allocate to contain resultant SID ) { ConvertPSIDToByteArray(pSid, sidBytes); } --how should I write the function ConvertPSIDToByteArray? Thank you!

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  • Debate: Can a HTTPS connection be hijacked with a man-in-the-middle kind of attack?

    - by Iulian Serbanoiu
    Hi, I'm wondering if the company I work for can see what I'm doing when I'm using a HTTPS connection - gmail for example. My case: I'm using gmail from work but I need to enter a password for a proxy when accesing the first web page - the password is asked inside the browser. I receive from the proxy a certificate which I must accept in order to make the Internet connection work. So the question is: Can https data exchange, between gmail and browser, be tracked? Thanks, Iulian

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  • Prevent query string manipulation by adding a hash?

    - by saille
    To protect a web application from query string manipulation, I was considering adding a query string parameter to every url which stores a SHA1 hash of all the other query string parameters & values, then validating against the hash on every request. Does this method provide strong protection against user manipulation of query string values? Are there any other downsides/side-effects to doing this? I am not particularly concerned about the 'ugly' urls for this private web application. Url's will still be 'bookmarkable' as the hash will always be the same for the same query string arguments. This is an ASP.NET application.

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