Definition: HTTP - the Hypertext Transfer Protocol - provides a standard for Web browsers and servers to communicate. The definition of HTTP is a technical specification of a network protocol that software must implement. HTTP is an application layer network protocol built on top of TCP. HTTP ...

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1answer
1k views

ASP.NET HTTP Response Splitting Attack

By default ASP.NET checks for HTTP Response Splitting attack when you do Response.Redirect: ...
5
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4answers
1k views

How to roll my own security mechanism - avoid SSL

i'm looking at implementing my own security mechanism rather than using ssl due to ssl being 'hopelessly broken' http://www.theregister.co.uk/2011/04/11/state_of_ssl_analysis/ and also because it is ...
2
votes
3answers
1k views

HTTPS Apache2 Information Leakage

Hello IT Security! I have Apache2 vhost with HTTPS listening on port 443, ie. https:// securesecret.com. I have another vhosts with HTTP listening on port 80, ie. http:// one.com, http:// two.com. ...
2
votes
2answers
1k views

Secure SSL Session from losing itself into unsecure http

I've seen some implementations of HTTPS SSL and, as a visitor, forced to rely to a lot of those. What would a secure implementation look like and where can one expect problems? I expect the installer ...
10
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5answers
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Benefits of identifying clients based upon the “X-Forwarded-For” or similar HTTP header in addition to Client IP

The X-Forwarded-For header is used by some HTTP proxies to identify the IP address of the client. The wiki page (linked above) mentions that ISPs may use this header as well. In addition there are a ...
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3answers
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Facebook login on HTTP? [duplicate]

Possible Duplicate: Is the Facebook login form using SSL without https in the URL? If you access http://www.facebook.com/, in the top right side there is the login section. You can enter ...
2
votes
7answers
669 views

How can http data be compromised on a secure network?

I understand that it is bad to send passwords in plain text over the wire because somebody can look at it and clearly steal your information, and that the solution is to use HTTPS because the ...
8
votes
5answers
1k views

Websites that interactively test browser security (XSS, CSRF, Javascript, etc)

I'm looking for a comprehensive list of browser test sites so that I can visually prove that the browser is patched and configured for safe web browsing. My intent is to know what risks may exist ...
7
votes
1answer
599 views

Inconsistencies found in OpenID Provider's HTTP Headers. Which one is the most secure that I should imitate in my STS, and Relying Party?

I'm comparing the HTTP headers of the various providers (LiveID, Google, Yahoo, etc) and notice a broad inconsistency in implementation on the sign in page, sign out page, and subsequent pages. ...
6
votes
7answers
1k views

Should I prevent sending of GET requests for urls that are normally operated with POST request?

There is an url that is normally operated using POST requests (i.e. POST request is sent when user submits form). But attacker can form GET request with parameters that are sent in POST request. This ...
4
votes
2answers
644 views

When is an intermediate page needed before directing a user off my primary website? What is the best implementation?

The NSA has a page that intercepts redirections off the primary site. (click "TLS: "Suite B Cipher Suites for TLS," RFC 5430" for an example). I've seen this used in Exchange Outlook Web Access ...
17
votes
1answer
3k views

Does the practice of blocking an off-site “Referer:” HTTP requests improve website security?

Is there any benefit for a security-paranoid website to disallow HTTP requests that have a Referer: from 3rd party sites? The pitch is that if such a HTTP request were to come in, then certain XSS ...
10
votes
2answers
751 views

When are HTTP session cookies at risk over Wi-Fi?

If I'm using websites that do not use HTTPS, but I'm on a WEP-protected Wi-Fi network, are my cookies safe from being sniffed by third-parties? Are cookies only at risk during login, or am I at risk ...
8
votes
9answers
403 views

What is the proper way to view the sourcecode of a website?

I recently heard that Firefox makes a second HTTP request when the sourcecode is requested. Is this true? Does this mean the webserver may issue alternate source from the original? Lastly, is ...
7
votes
1answer
685 views

Should I include a random padding in every HTTPS request and response?

According to the following paper, it is possible to decrypt HTTPS traffic by inspecting AJAX calls and using the size parameter as a cryptographic oracle. Should I be sending a variable length ...
12
votes
4answers
12k views

How do the processes for digital certificates, signatures and ssl work?

I have been trying to understand how ssl works. Instead of Alice and Bob, lets consider client and server communication. Server has a digital certificate acquired from a CA. It also has public and ...
9
votes
2answers
3k views

Are there any statistics about webservers and browsers TLS support?

From Hackers break SSL encryption used by millions of sites: The vulnerability resides in versions 1.0 and earlier of TLS, or transport layer security, the successor to the secure sockets layer ...
2
votes
3answers
3k views

SSL verification of host name of https server

I recently found that a library I am using (specifically Apache HTTPClient) when is configured to verify the hostname of the remote server against the certificate's CN it just seems to be doing a ...
-4
votes
2answers
665 views

Web service that converts HTTP GET to POST? [closed]

Is there some online forwarding service that I can give HTTP GET parameters to, and it would create a form with the parameters and submit it as POST? For example, I'd like to give someone the URL: ...
9
votes
1answer
1k views

Strict Transport Security — max_age value

I've been wondering what max-age should the HTTP Strict Transport Security header have. Both paypal and lastpass sites leave it very low: 500 (seconds = bit over 8 minutes) market.android.com has it ...
19
votes
2answers
2k views

Which HTTP status codes are interesting from a security point of view?

I'm looking to extract interesting information from webserver logs and I wonder which HTTP status codes should I filter out? For example, 200 hits can be considered to be 'regular behavior' whereas ...
7
votes
3answers
3k views

Can I block the true IP address using X-Forwarded-For header in IIS?

All the traffic gets to my IIS server through a proxy. I can't block or white list IP addresses because all the traffic comes from the proxy's IP address. Can I use the X-Forwarded-For header with ...
-1
votes
1answer
2k views

How can I avoid sending passwords in plain text when logging into a website?

Suppose that I login to a website. When I type my personal data, aka, password and email, the password is sent in clear text to the server, correct? Then, a network card in promiscuous mode can ...
1
vote
1answer
1k views

Is it possible to secure a web app without HTTPS? [duplicate]

Possible Duplicate: Can you secure a web app from FireSheep without using SSL? Think of a typical web application where the users log in, and then the session is kept with a session key. Is ...
38
votes
8answers
4k views

Why is HTTPS not the default protocol?

Why is HTTP still commonly used, instead what I would believe much more secure HTTPS?
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2answers
1k views

Strange 400 requests in webserver nginx logs (possible exploit scan?)

It's one of the logged by nginx webserver requests: ‹\x11Г»=џ&gьµЈБЈx¬ёђАЙхPЙuN0жЫ¶@Oc[ќЮmћC”Ь™\x04»c/‹\x1F or ...
3
votes
3answers
303 views

How do you make sure a pdf is deleted after being viewed in the browser?

For things like images or html documents, cache headers make sure that the data is deleted when the browser is closed. However as PDFs are opened in a plugin, the cache headers do not seem to have the ...
34
votes
9answers
25k views

Can my company see what HTTPS sites I went to?

At work my company uses internet monitoring software (websense). I know if I visit a https ssl-encrypted site (such as https://secure.logmein.com) they can't see what I'm doing on the site since all ...
11
votes
8answers
2k views

What chars should I not allow in passwords?

I am planning to develop a website that require that the users register a username and a password. When I let the user choose a password, what chars should I allow the users to have in the password? ...
6
votes
2answers
771 views

GET with additional parameters leads to “code injection” in html displayed

We got a security review done of our PHP code and the security company sent this in their report: Request GET ...
10
votes
6answers
2k views

Security review: “HTTP header user-agent has been set to (something)”

We got a security review done of our PHP code and they team advised this in their report (amongst other things): /appdir/ Details The HTTP header user-agent has been set to \" . Request GET ...
9
votes
5answers
6k views

Can I block based on Mac Address?

Incase of dynamic IP's the hacker can work around by taking a new IP or use a Proxy, is it possible to make a ban based on Mac Address ? I want to block at the Webserver level so that unwanted users ...
102
votes
8answers
43k views

Is BASIC-Auth secure if done over HTTPS?

I'm making a REST-API and it's straight forward to do BASIC auth login. Then let HTTPS secure the connection so the password is protected when the api is used. Can this be considered secure?
9
votes
1answer
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How does basic HTTP Auth work?

How does basic HTTP Auth work?
18
votes
8answers
1k views

Ways to secure yourself from Firesheep kiddies and other sniffing

Just a few days ago I had my first encounter with Firesheep. Luckily I was the one using it. Well, it scared me into looking for ways to secure myself. So I have two questions: In exactly what ...