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

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4
votes
4answers
915 views

Is there a security risk in existence of those HTTP headers in responses?

The following HTTP headers can be seen in responses on some sites: Age: 12 Content-MD5: Q2hlY2sgSW50ZWdyaXR5IQ== Via: 1.1 tacoma:3128 (squid/2.7.STABLE9) X-Cache: MISS from tacoma X-Cache-Lookup: ...
-6
votes
2answers
215 views

What does “;” mean in the link [closed]

In some links, I found ;. Example: https://example.com/index.php?action=pm;sa=send;u=1 What does that mean? Is it a web application firewall?
2
votes
1answer
69 views

Is using Gravatar in a web application with “private” URLs a security issue?

In our application, there is a kind of a "share" feature that sends an email to a user-provided address. This email contains a link with a secret access token (as part of the URL) that is valid for a ...
9
votes
3answers
904 views

Any eventhandlers that apply to hidden elements?

I'm trying to XSS a search field and my attack vector is getting reflected like this: <input type="text" id="txtRpHiddenKeyword" style="display: none;" value="ATTACK VECTOR HERE" /> Only ...
0
votes
2answers
146 views

How can I demonstrate the reflected XSS via post methods

I was trying to make a PoC of XSS: Attack sample: I have injected script into the value: <html> <body> <form action="https://test.com/api/users.prefs.set?t=1447648400" ...
4
votes
0answers
21 views

How to securely send your user and hashed password to a server? [duplicate]

I'm making a user system for an app I'm developing, and I have a client side (the mobile app itself) and a server side (where the database remains) for it. The app sends get and post petitions to the ...
5
votes
3answers
259 views

Did I miss any vulns here?

I recently took a beating in a Security Engineer interview and I did not get any specific feedback on how I did. I'd like to re-ask the question to the community so I can polish up on these elements. ...
0
votes
1answer
65 views

Does creation of dump data would be considered as vulnerablity?

Problem behind the question : We were a small firm developing a small web application which was similar to fb,gmail,etc [in terms of functionality]. We have a signup form and I was assigned to test ...
2
votes
3answers
116 views

Don't trust the client?

I am a web developer, and have been trying to learn a bit about security, and the thing that seems to be the biggest principal is just to trust the client with as little as possible. Is this a correct ...
6
votes
1answer
124 views

How does X-XSS-Protection: “0” affect the security of my website?

How does disabling XSS protection affect my website? What security vulnerabilities does it open? My site requires the header to be used on certain pages, so what can I do to secure the pages with the ...
2
votes
1answer
68 views

Is this code vulnerable to DOM based attacks?

We are developing code for a Banking web application. We want to make sure that the code is secure and since we are using a lot of javascript code, we are kind of worried if any chance of a web based ...
3
votes
1answer
296 views
3
votes
1answer
57 views

How much of a Django application could be reverse-engineered if the owner forgot to turn debug mode off?

I've been writing a Django app and almost published it with debug mode on. Django's documentation indicates Never deploy a site into production with DEBUG turned on. Did you catch that? ...
13
votes
4answers
12k views

What SSL key should I make for IIS: RSA or DH? What bit length is appropriate?

I'm creating an SSL cert for my IIS server and need to know when I should choose the Microsoft RSA SChannel Cryptographic Provider or the Microsoft DH SChannel Cryptographic Provider. Question 1 Why ...
8
votes
5answers
14k views

Hiding JavaScript source code

In a web-app should one strive to hide as much of the code as possible, for example from view source? In particular I was wondering should JavaScript be hidden, especially ones used for Ajax? I was ...
1
vote
0answers
106 views

Secure user logins in applications

We wish to create a Java GUI desktop application for our authorised helpdesk staff to perform their normal operations. For e.g. they often have to check log files for errors if a user called or verify ...
8
votes
1answer
2k views

Security of IFTTT

IFTTT looks like a powerful service but I'm also highly sceptical of its security. Could somebody give me a brief rundown of how you think it works and what the security implications are please? I've ...
0
votes
0answers
36 views

Is it appropriate to request a bounty for finding exploit on major site? [duplicate]

Long story short, I found an easily reproducible, very easy, and honestly embarrassing exploit on a major (yes, major) financial institution's online banking site today. It's not directly tied to ...
8
votes
2answers
236 views

not allowing pasting of bank account number

One of my credit card's bill paying site has an incredibly annoying limitation... it does not allow the user to paste in the bank routing and account number. Therefor, every month I am forced to ...
77
votes
5answers
36k views

Should websites be allowed to disable autocomplete on forms or fields?

Currently, there is an HTML form/input attribute called autocomplete, which, when set to off, disables autocomplete/autofill for that form or element. Some banks seem to use this to prevent password ...
8
votes
5answers
5k views

Should web sites disable form autocomplete on all forms?

I've noticed that some web-app security scanners flag the 'AutoComplete' feature of some websites (in the username/password fields) as a security risk and thus suggest including AutoComplete=off or in ...
1
vote
1answer
68 views

SSL certs signed by different CA

Have a question on SSL certs signed by different CA. in the past, my web server cert is signed with CA1 and it was also imported into the web app firewall for SSL traffic monitoring. Now, I have ...
27
votes
3answers
6k views

Firebug appears to be decrypting SSL traffic: is it the correct behaviour?

In my company we were writing a small web application which would be hosted and tested under HSTS protocol. One of my tester complained that the username and password can be seen in cleartext so it ...
1
vote
2answers
234 views

How to keep database record secret even from developer having access to it?

Imagine a web-based email app, such as GMail. The email should only be readable by the sender and the recipients. No one else, including the developer having access to the database server or ...
7
votes
4answers
11k views

What is Reflected XSS?

Fed up with the following definition. Reflected attacks are those where the injected script is reflected off the web server, such as in an error message, search result, or any other response that ...
4
votes
4answers
109 views

Xssing without opening a new html tag <

Example: test.php?p=test give output: <p style="...">test</p> I can inject anything other than '<', when injected I got redirected. So can it be exploited ?
4
votes
3answers
222 views

HOW is the malicious URL/payload is delivered to the user on a DOM based XSS attack?

Testing for DOM based XSS at OWASP reads: The first hypothetical example uses the following client side code: <script> document.write("Site is at: " + document.location.href + "."); ...
1
vote
1answer
80 views

“Breaching Privacy Laws” - What could this mean? [closed]

I was one of the developers of a web form that we built for a client (USA based) some 2 years back. Today, we received an email from them stating that one of their customers raised a concern with them ...
5
votes
4answers
2k views

Static code review approach

My questions is related with static code analysis approach used by Veracode vs Fortify/AppScan. Veracode – Finds security flaws in application binaries and bytecode without requiring source ...
3
votes
2answers
157 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
3answers
32 views

What would be the valid approach while handling short links [duplicate]

In modern world people often use to send urls with url shortners from various webservices,Mostly we use url shortners to shorten the url But in terms of exploits,phishing attempts how could we avoid ...
1
vote
0answers
24 views

CSRF attack - Set custom CSRF Header [duplicate]

The title is a little bit unclear but I had no idea to describe the following issue in there. I found a vulnerability in a website where I am able to bypass the CSRF protection (Bug Bounty ...
1
vote
1answer
182 views

Does using ASP.NET prevent XSS [duplicate]

I was reading about XSS, and I know that ASP.NET doesn't allow saving HTML to database. So my question is Does using ASP.NET make my web application secure regarding XSS completely, without ...
2
votes
2answers
240 views

Strange requests to my server

I recently checked my logs and found some strange requests to my server. eg GET /path/Microsoft.XMLHTTP HTTP/1.0 GET /path2/Scripting.FileSystemObject HTTP/1.0 A further check seems to point to ...
4
votes
3answers
2k views

Create a page to experiment with SQL injection [closed]

This semester, I have taken a course on Information Security and my project for this course is to implement an SQL injection to obtain admin privileges. For this I first download Havij software ...
11
votes
3answers
1k views

What security measures should be taken when running a Linux web server out of our office?

I am interested in running our company's web server from our local office. The office makes use of file sharing and NAS devices among other common office protocols. The worst case scenarios I've ...
1
vote
3answers
1k views

Should CSRF token without session cookie work?

Let's say that website example.com has CSRF protection. They send CSRF token in custom header and in hidden input fields. For example to add new folder, your http request need to contain CSRF token. ...
3
votes
2answers
1k views

Is SSL session based only? Is there a (formal) definition of an SSL connection?

In various docs on SSL there is a mention of connection. But from the context I am not sure if this means the underlying TCP connection or the SSL connection. I am thinking that there is no SSL ...
9
votes
4answers
14k views

Best place to store authentication tokens client side

When my users are authenticated they receive an authentication token, I need to use this authentication token to authorize some asp.net WebAPI calls. To do this I need to add the token to the head of ...
2
votes
2answers
184 views

Web site vulnerability discovery by scanner

I have a web site which require user login and password before they can access any materials and use the services. However, a recent VA scan found that one URL link is vulnerable to a an old version ...
2
votes
3answers
358 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 ...
6
votes
7answers
1k views

How do I secure my login page?

The login page is the starting point to any web site and the most important thing to authenticate the user. When I begin to build any web application, I take a lot of time to think about how to ...
2
votes
0answers
50 views

What are the most common ways to Architect the verification process of the access tokens between resource and authentication server using OAUTH 2.0?

What are the most common ways to Architect the verification process of the access tokens between resource server and authentication server using OAUTH 2.0? I am trying to build a web application ...
3
votes
1answer
261 views

Would this work to protect a cookie with an OAuth token?

I'm currently trying to set up an OAuth 2.0 authentication scheme to protect some stateless REST webservices. These services deal with sensitive information, and the OAuth support is a requirement. ...
2
votes
2answers
99 views

which encryption is used in this JS Variables

Which encryption method is used for these variable names: var g_license_info var g_server_time_obj Respectfully encrypted to: var ago05b4e111efe149737a67a177f00ffad2 var ...
3
votes
2answers
678 views

Penetrate Testing Java Web Applications

First thing first; this is something I have never done before. I have a web application written in Java (JSP and Servlet) and use MySQL as the database. Application is deployed in Amazon EC2, an ...
2
votes
2answers
100 views

my bruteforce prevention has major downsides - any ideas?

I'm currently searching for the best way to prevent my software's webportal from bruteforce attacks and came up with the following idea: 3 login attempts without any visual challenge after 3 failed ...
2
votes
2answers
217 views

xss when http is added in the payload

If a field is not santized(except <,>) and all it does is add http in payload and reflects the output, is it possible to execute script in the client side? This is what output looks like for input ...
2
votes
1answer
296 views

Securing the backend of your web application?

We are grappling with how to architect are back end for security. Some of the recommendations I've seen look like this: Source Some will have another firewall between the application server and ...
4
votes
1answer
111 views

Create a web session from within a 3rd party website using an existing oauth2 token

We're trying to allow a trusted 3rd party web application to automatically authenticate users in our own application. We thought about using oauth2 for that matter. In our scenario we would provide ...