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

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15 views

Web Application Authentication Using Computer Properties

Introduction: I am in the process of building a web-based game that requires user authentication. The vast majority of other gaming sites utilize the typical username/password method for ...
3
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2answers
105 views

Separation of secure login steps

I'm redesigning a login screen for a financial services application. Currently, this requests user ID and password, then (on the same screen) 2 digits from a 6-digit PIN are requested - these 2 digits ...
1
vote
1answer
80 views

Confused about the most relevant way to secure my APIs

I own a Javascript application (Single Page Application) hitting some apis from my own RESTful backend. What I expect for my authentication/(authorization) mechanism is three things: Preventing ...
0
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1answer
45 views

Is a properly configured server secure against unauthorized data access?

Take for example a game. Typically, when you buy or download a game that can be played offline, all of the data required to run the game is shipped with the executable. In order to protect these ...
6
votes
3answers
1k views

What's wrong with my own authentication scheme?

So I want to write my own authentication scheme for a web-app server, as follows. I assume this is a Bad Idea from either security or cost-effectiveness reasons and I know the conventional wisdom is ...
3
votes
2answers
546 views

Token authentication and storage / websocket issues

My application is running an API authentication that uses tokens rather than cookies. This leads me to ask a few questions : What is the most secure way to store the token ? By using random ...
3
votes
4answers
105 views

Effectiveness of Interactive Application Security Testing

There are a number of IAST tools available on the market such as Acunetix Web Vulnerability Scanner and HP WebInspect Real-Time. How effective are these at finding vulnerabilities? Is there any ...
1
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0answers
57 views

Failed to connect to netcat reverse shell

I am doing an exercise of PentesterLab, I've got a webshell called 1.pdf, and it can be included in index.php as a PHP file. It contains code like this: %PDF-1.4 <?php echo system($_GET["cmd"]); ...
2
votes
4answers
414 views

How to prevent users from downloading information from our search engine?

We have developed a search engine (simple search, no login required) where users can search details in the database (Apache Lucene) by entering their name (et. al.), then clicking the search button. ...
1
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3answers
24 views

Secure Custom Registration Links

I'm working on a website that allows a current user to invite another individual to be friends by typing in the non-user's email address. The non-user would then receive a custom registration url by ...
-1
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0answers
5 views

Visual Studio won't record updated text after clicking a button [migrated]

I am using Visual Studio 2013 for Web Performance Test and recording my steps. When I select an option from a dropdown list, the text on a div gets updated and when a second option is selected ...
1
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0answers
44 views

What can I do to increase security of a small open source application

I've been developing a small CRUDish Ruby on Rails application on my free time for a non-profit organization. The app is already running in a small scale in Heroku. Lately I've been thinking about ...
2
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1answer
69 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 ...
34
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6answers
2k views

Why is HTTPS not the default protocol?

Why is HTTP still commonly used, instead what I would believe much more secure HTTPS?
0
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3answers
79 views

Does this reflected XSS vulnerability pose any real threat?

I have a web site where users can enter some text into a textbox and that text is immediately rendered in a div using javascript (strictly front end). If a user enders something like this: This is ...
5
votes
2answers
360 views

Encrypt user data when they log in with Facebook, Gmail, etc

I made a login system. The user can login by: using a normal email / password (bcrypted). using a service like facebook, gmail, etc. So far so good. Now I want to store sensitive information (ftp ...
0
votes
1answer
27 views

Handling passwords in wicket

I have a form which contains a password field. In swing the getPassword() method returns a character array. After the password has been processed by my web application the array can be wiped to ...
20
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9answers
2k views

Is a web application firewall necessary if the application is secure?

Recently I've been reading about Web application firewalls and the fact that they protect against most frequent attacks like injections, XSS or CSRF. However, a good application should already be ...
15
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1answer
2k views

Guidance for implementors of HTTPS-only sites (Server side)

The recent trend in HTTPS attacks is to attack the HTTP protocol. What should I do to increase my site's security if the only protocol I want is HTTPS? Some easy to implement ideas are Implement ...
1
vote
5answers
106 views

Fixing large number of SQLi, XSS, RFI/LFI in a PHP application

I'm working on a website which was built few years ago in PHP and its riddled with vulnerabilities all over the place. Someone has already gained access to the admin panel and we want to secure the ...
2
votes
2answers
89 views

How to prevent popping up a login dialogue using a malicious hotlinked image and HTTP Basic Auth header?

While using Firefox to browse my forums, I noticed that a malicious user posted an image (via hotlinking, not by uploading to my server) with the extension .png which complies with the forum rules ...
6
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0answers
43 views

What are the implications of publicizing a consumer secret for sharing between developers doing local website development?

In relation to this GitHub issue on the Gittip project (which turned out to be a false alarm), what are the security implications, if any, of hardcoding into the git repo a test app's OAuth consumer ...
1
vote
1answer
106 views

Is it illegal to publicly reveal security flaws in a service? [closed]

Mainly I'm interested in UK law on this, but I welcome input from any jurisdiction. I discovered flaws in a service that undermined the security of all its user's data. This is a service where users ...
2
votes
2answers
480 views

What is the most secure way to set up web server user permissions?

The default Debian way of setting up a common web server (Nginx) is to run the main process as root and unprivileged workers as www-data. In order to allow for the worker processes to read/execute web ...
29
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6answers
2k views

Is there a difference between GET and POST for web application security?

I have 2 choices in sending data between 2 web applications. I encode the data in Base64 and append to the URL and retrieve these parameters at my destination application and decode the parameters. ...
8
votes
3answers
9k views

Is there any SQL injection for this PHP login example?

I want to write a login form, and I got one example from the web. I want to know, if there is any SQL injection for this code? If there is, what could the exploit's web form entry look like? This is ...
4
votes
2answers
144 views

Does allowing the <cite> tag create any XSS vulnerabilities?

Backstory: Stack Exchange's markdown parser allows a couple of HTML tags (a,b,i,img) through, with some restrictions on the attributes to prevent XSS. We're thinking of requesting the <cite> tag ...
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votes
2answers
60 views

After I downloaded Adblock plus on my computer, ads still popped up on youtube? What gives? [closed]

I downloaded Adblock plus on my computer, then went back to youtube (which was playing Vivaldi concertos), and all the ads were yet there. What gives? Is Adblock plus authentic?
73
votes
2answers
37k views

What is the difference between https://google.com and https://encrypted.google.com?

Is it there any difference between the encrypted Google search (at https://encrypted.google.com) and the ordinary HTTPS Google search (at https://google.com)? In terms of security what were the ...
1
vote
0answers
81 views

What is the preferred way of using AWS (specifically S3) from mobile apps?

Adding the AWS access key and secret key directly in app code is definitely not a good approach, primarily because the app resides on the users device (unlike server side code), and can be reverse ...
1
vote
1answer
168 views

IIS Host Header Attacks

Is IIS and ASP vulnerable to the same Host Header Attacks we have seen on Apache and Nginx? Specifically the attacks that use the HTTP Host Header to reset a password or implement web-cache poisoning. ...
-1
votes
0answers
27 views

Error selecting Public Page from database. Contact System Administrator

I am pentesting a website: http://www.membermanager.net/summerchallengeride/index.php?ID=3719' I a having this error: Error selecting Public Page from database. Contact System Administrator. After ...
2
votes
5answers
155 views

running firefox as unprivileged user on Linux

On a typical desktop (with no listening services such as Apache, SSH, ...) it seems to me, the browser is the most exposed application and a potential security compromise (and even more so with Java ...
0
votes
1answer
45 views

501 Not Implemented ServerInfo.jsp

I looked at my logs from amazon ec2 instance and found the following lines: 94.177.121.102 - - [29/Mar/2014:08:50:52 +0000] "XGET /web-console/ServerInfo.jsp HTTP/1.0" 501 418 "-" "-" 94.177.121.102 ...
0
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2answers
230 views

NGINX Hacking Attempt

Every time I start my test-server and let it run for some days I get this in my log-files (in different variations): 111.241.26.165 - - [18/Feb/2014:22:16:45 +0100] "\x04\x01\x00\x19\xCBER!\x00" 400 ...
0
votes
1answer
34 views

Web Application Security Tools For Login Authentication

currently i doing my final year project. I want to do a comparison of different types of web security tools to pen test login authentication. But, this is too broad and pointless. So, any one of you ...
3
votes
1answer
146 views

Exporting data beyond a cryptographic boundary

Scenario We're working on putting a FIPS 140-2 compliant SQL database on a dedicated machine behind the internal firewall of an organization, and need the capacity to push a specific document or ...
2
votes
1answer
95 views

Is there a way to report IP addresses scanning for Exploits?

We're currently running a web site using .NET, and I'm using the Elmah package to look at some errors and issues in real time. I've noticed that there are a number of errors in the log from IP ...
66
votes
15answers
6k views

Does an established ssl connection mean a line is really secure

From the view of somebody offering a webapplication. When somebody connects with SSL (https) to our service and submits the correct authentication data, is it safe to transmit all sensitive data over ...
1
vote
2answers
100 views

WordPress Private Expoit? [closed]

I have a friend who said he has a private exploit for all WordPress ran websites. I asked him to take down my private blog, to see if it is real. He couldn't do it. I tried to get some more ...
0
votes
1answer
76 views

Fuzzdb detected as Trojans [closed]

I recently downloaded fuzzdb from http://code.google.com/p/fuzzdb/ and my antivirus kept on detecting some of the files as Trojans. I need to know if these files are safe?
2
votes
4answers
282 views

Malicious code in image. Harmful?

In my website, a user can upload his profile picture. After analysis of some pictures, I have found some pictures with malicious PHP code, just like the upload script. As an example, I have found a ...
1
vote
2answers
85 views

Is checking against password lists a good way to enforce a secure password policy and possibly detect dictionary attacks on a web-based app?

I have written a script to check a given password against a ~65 million long list of passwords collated from various lists released after hacking attempts. I am thinking about incorporating it into ...
14
votes
6answers
2k views

Is showing your IP address in the URL a bad practice?

Someone told me that showing your IP address in a URL (like hxxp://45.67.134.34/default.html) is easier to hack. Is that true? I could trace any domain name and get its IP number as well.
1
vote
2answers
59 views

How do I Mitigate Directory Traversal when User-Supplied Input is a Mandatory Business Case?

I have an instance where we have an application that requires the ability to set up sftp commands that are specified by administrative users. They are configured through the front-end of the ...
2
votes
1answer
262 views

Using Selenium tool for xss scripts

Ok, so i need to know can Selenium webdriver tool be used for testing xss vulnerabilities and exploits. If its possible, then pleasee provide me with some example or tutorial. Apologizes, if am wrong ...
2
votes
1answer
371 views

SqlMap bypasses OWASP ModSecurity Core Rule Set for SQL Injection

I am trying to perform a simple penetration test on the DVWA (the web application that has been specifically designed to be vulnerable to some of the most common web application attacks). I want to ...
0
votes
1answer
57 views

Review of approach to client-side only hashing and encryption for web application

Background: I have little knowledge of hashing and encryption, so please bear with me. I have posted a related question here: ...
6
votes
1answer
236 views

Isn't a HIDS, NIDS and WAF complementary?

Assume this scenario: Someone trying to hack a website. Simply put: www.site.com/example.php?=<script>alert(1)</script> A HIDS would see this attempt in Apache's access log, a NIDS would ...
2
votes
2answers
128 views

Data protection laws and regulation for storing IP addresses for registered users [closed]

I have a website, large amounts of this site can only be accessed if the user logs in. I would like to use the users IP addresses as a means to determine where they are when they access certain pages. ...