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

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2
votes
1answer
49 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? ...
2
votes
1answer
65 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 ...
5
votes
3answers
254 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. ...
1
vote
3answers
125 views

Is it necessary to update JRE in an Apache Tomcat Server?

We have a Java web application contained in an apache tomcat instance. JRE version is 7.0.51 and Tomcat version is 7.0.42. Users have expressed their concerns about Java 7's support/updates being ...
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 ...
1
vote
1answer
63 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 ...
8
votes
2answers
200 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 ...
27
votes
3answers
5k 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
0answers
101 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 ...
4
votes
4answers
100 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 ?
5
votes
4answers
1k views

Can I use port 443 without SSL?

If I am running a web server on port 80 and I also have port 443 (HTTPS) turned on but it is not enforced. I did not self-sign or sign with a proper CA (i.e., I don't use SSL for my site), does ...
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 ...
3
votes
4answers
168 views

Is it good practice to mandate input action on the password field in a webapp?

I am of the school of thought that says you should never have the browser "remember your password" because if you use it often enough, you will be able to retain that piece of information. I now want ...
2
votes
3answers
31 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
23 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 ...
4
votes
3answers
180 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 + "."); ...
2
votes
2answers
237 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 ...
12
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 ...
3
votes
3answers
137 views

Does this concept attack work to harvest credentials and 2FA using offline fake site?

My concept is this: Client connects to Malicious\Eviltwin AP Client connects to www.facebook.com but this one is a fake offline site by the fake dns server Client enters user and password ---> ...
3
votes
2answers
177 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 ...
1
vote
1answer
167 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
0answers
34 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 ...
2
votes
2answers
81 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
1answer
144 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

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 ...
1
vote
1answer
73 views

Tweaks related to javascript execution in browser

Suppose, a filter validates the url, but not the protocol. In that case I can XSS that field with the following payload javascript://%0D%0Aalert(document.domain);//validurl.com You can paste above ...
2
votes
2answers
193 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 ...
4
votes
1answer
188 views

Why do web services keep asking me about my phone number?

They say it's for my own safety and that somehow my account is more "secure" if I link it with my phone number, but I don't understand why - they already have my e-mail address through which I can ...
2
votes
1answer
155 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
72 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 ...
3
votes
2answers
325 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 ...
-1
votes
2answers
179 views

Things to look for a backdoor in web application source code (.PHP, .JS, etc files) [closed]

I am in the process of adding functionality to a web application and I will be receiving some source files (PHP, JS, and CSS) from a hired external developer. These files are not obfuscated or ...
8
votes
3answers
242 views

What advantage does the Bloomberg authentication system have over traditional 2 factor?

Bloomberg clients have an interesting way to authenticate to the server. This seems involve some of the following: Logging into a secure website, that displays a flashing square Swiping your finger ...
2
votes
0answers
98 views

How do ad networks and analytics providers encrypt/hash their traffic?

I am trying to observe what types of information android apps are sending to ad networks that are integrated into apps. I used Fiddler to decrypt the https traffic. However, some ad networks seem to ...
2
votes
0answers
41 views

userWorkstations attribute in AD preventing users from logging into WebApp

For some of our users in AD, we have set userWorkstations attribute to restrict access to other machines. But this is preventing those users from logging into WebApplications (around 50+) protected ...
0
votes
0answers
36 views

Widget to client web encryption on an uncontrolled LAN

I asked a broader question related to this on serverfault, but I think probably the specific case I'm thinking of might be best considered here. My basic problem is this: I am providing physical ...
6
votes
2answers
119 views

Non-Sensitive/Non-Critical Database and Web server protections?

I have an unrestricted DMZ that is currently set up with a non-critical/non-sensitive web server and database server inside. The database server gets interfaces from two critical systems but does not ...
0
votes
1answer
48 views

Convert customer tracking system from web access to REST

Intro:In our company there is a service tracking website for our clients, where they can monitor the progress made in their cases with us. Our users are required to log in to that website (admin ...
1
vote
2answers
151 views

Questions about user authentication over REST API

I'm now trying to implement user authentication on my android app. I, however, have a few questions. I use a REST API. How do I safely request and send data to and from the phone? I'm assuming that I ...
-2
votes
1answer
78 views

LFI exploitation using data:// [closed]

I found LFI in my website and I tried to exploit it, but when I use php://input or data:// it doesn't work, I cannot get the shell. Example: ...
1
vote
2answers
91 views

How to rate or review one Java web Application's security

Is there a way to rate or review the security for a Java web application? Except for web scanner or code audit, does it exist a metric/procedure to evaluate the application's security? Also I have ...
3
votes
1answer
74 views

What are the security implications of having login dialog inside of an iframe

I have the page to render some content and I allow it to be embedded at any third party page, so I can't use X-Frame-Options. One of the requirements is to ask user for login/password when content ...
0
votes
1answer
44 views

User account password encyption by web based emails service providers?

Do web based email providers like Gmail, hotmail encrypt user account passwords when saving them to their database? If they do, why does account information get leaked after a hack?
1
vote
0answers
47 views

How to temporarily store data securely on a cache/relay server?

Sorry if the question title sounds unclear, I'll happily accept suggestions how to make it better. Background We are running a rather complicated SCADA/MES system with a Web interface through which ...
2
votes
1answer
120 views

Capturing (1x Only) HTTP POST Request [tcpdump]

Every now and then; I like to fire up tcpdump and just watch the network traffic as the packets flow on by. For example: user@host:~$ sudo tcpdump -Aevvv Will parse & print all local ...
3
votes
0answers
1k views

Apache vs Jetty with regard to Security

I am trying to design the architecture of an app that will run on an AWS Linux AMI, inside of a Docker container. The app will deal with sensitive financial data, so security is top priority. The app ...
0
votes
0answers
59 views

Is authentication/authorisation necessary between a web server and an isolated application server?

If I have a system that consists of an application server which responds to requests made only from the web server. a web server that responds to client requests over the internet. Is it necessary ...
2
votes
0answers
99 views

Code execution through JSP RFI?

I'm working on improving my understanding of RFI (Remote File Inclusion), especially in JSP apps. I've created a vulnerable application that imports a JSP page from another server to replicate the ...
1
vote
1answer
112 views

How could one determine if a web page is vulnerable?

Suppose that we have a web page. This page could be vulnerable to any attack such as SQLI. By looking the HTML code of the page, we can find some input elements that could be used by attackers to ...
-3
votes
1answer
181 views

Online Password Storage: Is this safe and how can I implement this?

Hello there for an online Tool which offers the feature of storing passwords online I want to implement the following process: A user is generating a secure secret random key with Javascript This ...