An application that is accessed over a network such as the Internet or an intranet using a browser.

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2
votes
2answers
18 views

Assuring Client is Authorized to use JSON Web Token

JSON Web Tokens ( JWT ) are server-signed objects that the issuing server uses to identify a user, track session data and authorize requests. The fact that JWT are server-signed gives assurance that ...
3
votes
2answers
94 views

Encrypt part of users' data in web application vs. password recovery

I'm developing a web-application that stores sensitive user data. Although the data is sensitive we want it stored permanently because the users might want to come back later and reuse it. The user ...
0
votes
1answer
41 views

How to secure a websocket connection with challenge-response?

TL;DR Given that all of the state information for a web browser is accessible to a (potentially hostile) user, how can challenge-response authentication between the browser and the server be ...
2
votes
2answers
50 views

Is encryption application credentials using certificate encryption good practice?

I'm working on a small web application. The web application needs access to a database, so the application needs access to a database username and password. The application runs in an environment ...
-3
votes
2answers
34 views

Data to be Logged in a Web Application [on hold]

What data should be logged in a web application? From all the perspective such as security, user access, data modification, path traveled by a user in application and anything that matters.
0
votes
1answer
48 views

How can you draw attention to your web application honeypot? [duplicate]

Unsatisfied with existing software, I'm currently toying around with writing a web application honeypot. My question is: how do you draw the attention of attackers and automated attacking software to ...
3
votes
2answers
191 views

Crossdomain.xml vulnerabilities

<cross-domain-policy> <allow-access-from domain="*" secure="false"/> <site-control permitted-cross-domain-policies="master-only"/> </cross-domain-policy> I would like to ...
-2
votes
0answers
39 views

Http splitting attack via webgoat [on hold]

I'm trying to do the webgoat http splitting attack, I'm using firefox and burp suite. Note that I have already read the question that is already posted (Why is this response splitting attack not ...
2
votes
4answers
530 views

Why self-signed https is less trustworthy than unencrypted http?

It wouldn't be far-fetched to guesstimate that at least 50% of the web traffic can be intercepted in 2014. However, a guesstimate of active interception attacks is likely an order of magnitude ...
2
votes
2answers
157 views

Is always using HTTPS a good idea? [duplicate]

OK, this question might seem a no-brainer for a professional but keep in mind I am not a professional web developer so my knowledge in this field is very limited. I have been pondering over time ...
6
votes
2answers
1k views

Should content delivery depend on FCrDNS (forward-confirmed reverse DNS) look-ups and why?

First, let me clear that this isn't a duplicate of Does deliberately wrong information from a DNS server violate standards generally accepted good practices? thread, as I'm not interested in legal ...
0
votes
1answer
72 views

Discovered a security flaw in a company, what to do? [duplicate]

While playing with a site I have discovered a huge security problem. The thing is, if I tell them about it they might question what was I doing in the first place. I was trying to hack my friends ...
0
votes
0answers
55 views

Is there a list of web technologies, and the corresponding privacy risks and mitigations? [closed]

I'm looking for a consolidated list of web technologies, the risks, and mitigations. Does such a thing exist? For example, the basic stuff would be Javascript, IP address, proxy header information, ...
0
votes
1answer
36 views

Getting a certificate warning for one email but not another

When I log into outlook.com using Chrome browser, I get a certificate warning for one account but not another. One says my connection is private, the other says it "may not be private". Here are the ...
3
votes
1answer
232 views

Session Management for Private Key Passphrases in a Web Application

Use Case I would like to encrypt data in a database for a Web Application. The following requirements exist: Decryption should only be possible when a user provides a passphrase Encryption should ...
2
votes
1answer
150 views

Is Two-way SSL sufficient for Multiple web servers communicating to each other?

I have a fixed number of web servers. Each web server represents a company and the users of the company talk to their assigned web server. I have this setup to decentralise the databases. So if one ...
0
votes
2answers
72 views

Multiple types of tracking

In a system where I have reviews of products, to avoid fake reviews I have thought about doing the following: Limit one review for each account -> To bypass this measure, the user could create ...
0
votes
0answers
20 views

Struts standard administrative actions unprotected - so what?

In an Apache Struts deployment, the struts-config.xml has the following stanzas: <!-- The standard administrative actions available with Struts --> <!-- These would be either omitted or ...
0
votes
1answer
138 views

Why enter again (or at the very least confirm) my email address when I click “Forgot password”?

In most, if not all, web forms for logging into a site, you have your forgot password link. When clicking the link, you get a new form (usually in a new page) either empty (!) or prefilled with the ...
1
vote
2answers
96 views

Is there a way to steal PHP or ASP code from a web server through the HTTP(S) protocols?

I am working on a web application that would include some custom development and got a bit concerned about code theft. So the question I wanted to ask is whether it is - generally speaking - possible ...
-3
votes
2answers
47 views

Which HTTP requests support custom data in URL? [closed]

I am aware that HTTP GET requests are sent to web-server using query-string name/value pair in URL. This means that one is able to pass custom data to web-server. For example ...
3
votes
3answers
4k views

How does a website owner decrypt ASP.NET's Viewstate, and cookies

I'd like to audit my viewstate for information I don't want to be sent down to the client. What are the steps needed to decrypt this information into human readable form? How would I decrypt the ...
15
votes
3answers
3k views

Best practice in web application security authentication to avoid bruteforce attack

I want to cover the possible cases of attacking. My application already has captcha and two-factor authentication, but how can I avoid a tiny attack without annoying my users? The possible cases that ...
81
votes
17answers
13k views

Does an established SSL connection mean a line is really secure?

From the view of somebody offering a web application, when somebody connects with SSL (https) to our service and submits the correct authentication data, is it safe to transmit all sensitive data over ...
13
votes
3answers
2k views

ASP.NET MVC security check list

I am planning to start a new web site on ASP.NET MVC 2 (3). Does anybody a full (if possible) check list of actions, approaches I should reach to avoid almost problems with security?
21
votes
5answers
4k views

Should I use Suhosin for PHP?

Suhosin can be used to increase the security of your PHP application. I can really see the use of it when you are using shared hosts, with multiple (possibly evil) people running their PHP apps there. ...
8
votes
6answers
26k views

Playing with Referrer Header

There are 2 sites: http://www.site1.com http://www.site2.com http://www.site1.com contains link to http://www.site2.com as <a href="http://www.site2.com/">link<a/> When user clicks ...
2
votes
0answers
27 views

How to safely decrypt user data in scheduled script

I have a web application with a lot of stored db data, some of which is encrypted. The data is encrypted with a surrogate key, which itself is encrypted with a hash of a user password. Upon request ...
23
votes
5answers
3k views

Security of an initial redirection from http://example.com to https://example.com

Suppose that http://example.com/<foo> systematically redirects to https://example.com/<foo>. I enter http://example.com in my browser's URL bar, and I see a page load and the URL bar now ...
5
votes
4answers
624 views

XSS for stealing cookies … not anymore?

The other day I found a XSS vulnerability in a website that a friend told me to Pentest. It was a page from a school that he's managing, so the important thing here is the login credentials == ...
4
votes
3answers
84 views

Securely saving credentials for later plain-text authentication

I am developing a Django application where a user logs in with Kerberos, and then has accesses to a number of internal applications. One of these is a file application that connects to a server over ...
7
votes
2answers
3k views

Practices for storing username/password in Web applications

I have read the following question: Storing password in Java application but I don't find the answers useful for my case. So here is my question somehow related to that. I have a Java Web application ...
7
votes
4answers
7k views

Testing clean urls with sqlmap

Is it possible to test for SQL injection vulnerabilities with using sqlmap with a url that is using mod rewrite (or something like it) to make the urls clean? I know how to test my sites that have ...
2
votes
2answers
95 views

Is this an appropriate anti-CSRF method?

I have the following system in place on my web app and I'd like to know if it's secure. Cookie contains CSRF token. Application detects CSRF token in cookie. Application places token in a header. ...
3
votes
2answers
331 views

Current industry standard key management solution for web app on linux host

The scenario: Data is sent to an application server and you want to selectively encrypt some data before sending it to a DB server for storage. All servers run some linux distro. This is a relatively ...
0
votes
1answer
279 views

CORS & CSRF Prevention for an REST based API

I'm currently trying to wrap my head around how to prevent CSRF. My first solution was to use a token which is suggested everywhere. That would of course fix this problem: <img ...
1
vote
1answer
81 views

Encrypting data before sending to SaaS tool and decrypting on browser view

I'd like to send data to a SaaS tool, where the data is stored in the cloud. I'll use Google Analytics as an example, but it applies to any similar service. Google Analytics does not allow you to ...
32
votes
8answers
2k views

Dealing with excessive “Carding” attempts

We are currently setup using Magento on a LAMP stack for our e-commerce platform. As of a month or two ago we began noticing a lot of carding attempts against our website. All attempted transactions ...
4
votes
1answer
135 views

Can source javascript files be infected from a developer's machine?

First a little bit of background, About two weeks back one of the developers in my team said they were seeing advertisement popups and links appearing all over the web app we were developing, when ...
3
votes
1answer
80 views

Sandboxing untrusted user-supplied code in a web application

I am trying to create a programming game where user-supplied programs compete in battle simulations, to be used as a tool to teach and practice programming. (It will likely be a turn-based robot ...
0
votes
1answer
95 views

What to do when one's server is being scanned very agressively

I can see that my application, which is on several virtual instances, is being scanned; I guess the attackers are in "recon mode." What I know: I understand that we can block dirbuster, and other ...
16
votes
3answers
26k views

How to ensure that cookies are always sent via SSL when using ASP.NET on IIS 7.5?

Firesheep has brought the issue of insecure cookie exchanges to the forefront. How can you ensure that all cookie exchanges are forced to occur only via an SSL-secured connection to the server when ...
2
votes
2answers
74 views

Checksum Calculation for Source Code tar balls downloads

Http sites like OpenSSL provide checksum for each source code tarball available for download HTTPS sites like GitHub usually do not provide checksum with 'download zip' option. Some sites although ...
43
votes
2answers
7k views

Is this an attempted SQL injection?

Looking through error logs I found lots of requests to a web-app where the URL contains: ...
8
votes
2answers
444 views

Is allowing unfiltered curl request from a website a vulnerability?

Recently I was on a website which provided some non-sense feature: Enter a URL Press enter HTML source of a given URL is displayed It basically fetched a URL and just dumped the contents of it. ...
6
votes
3answers
187 views

Same Origin Policy - XHR response

I know that Same Origin Policy (SOP) prevents a page/script from one origin to read response from another origin, but it does not prevents the page/script from making a XMLHttpRequest (XHR) request to ...
55
votes
12answers
11k views

What to do about websites that store plain text passwords

I recently received an email from a popular graduate job web site (prospects.ac.uk) that I haven't used in a while suggesting I use a new feature. It contained both my username and password in plain ...
-1
votes
0answers
45 views

Do iPhone Chrome & Safari keep refreshing and sending my IP address to websites while in background?

You can put a browser like Safari or Chrome into the background on iOS without closing your tabs. Will they keep refreshing themselves and send out personal details like your IP address? What about ...
6
votes
3answers
2k views

Must login and logout action have CSRF protection?

I am making a web application in Django which generates and includes CSRF tokens for sessions (a Django session can be anonymous or a registered user). Should I keep CSRF protection to the controllers ...
3
votes
2answers
59 views

What measures must be taken to securely authenticate from web traffic to a WebSocket connection?

Obviously TLS is a must for any and all secure authentication. Please turn your paranoia settings up to 11 for this. Background: (In case people are unfamiliar with the WebSocket (WS) protocol and ...