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

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0
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5answers
263 views

Are all URL shorteners unsecure/vulnerable?

The OWASP state that open redirect is a vulnerability: An open redirect is an application that takes a parameter and redirects a user to the parameter value without any validation. This ...
3
votes
3answers
148 views

Is login limiting still needed if we employ multi-factor authentication?

The status quo is that most online websites limit login attempts per IP address, or even per account since some attackers possess huge amounts of IP addresses. OWASP declares: When multi-factor ...
1
vote
1answer
143 views

Implementing password-reset in a web application by authtoken over email

I think I have a basic understanding of security concerns, but I feel like if I don't know everything, I'm going to implement lousy solutions. Below is my current strategy; Have I overlooked obvious ...
2
votes
1answer
220 views

How to work effectively to win bug-bounties?

I really want to prove myself (to my parents) by winning a proper bug bounty How should I best prepare for this and go about actually finding bugs? Edit So can anyone give some web sites ...
3
votes
5answers
1k views

referrer checking as a defence for XSS attack

After reading the question about referrer and the answer of @D.W., I did not understand the following part: XSS defense. Strict referer checking can make reflective XSS attacks harder, because ...
1
vote
1answer
507 views

Hydra gives wrong passwords

I've been trying to use hydra (educational way) but with no success. The site method is http-post but performed by ajax (should it be a problem? I think not). After execute the command I got an output ...
1
vote
3answers
630 views

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

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 ...
1
vote
1answer
54 views

Does a username/password + emailed PIN count as strong 2FA?

To log in to a enterprise web app, our security team is insisting on 2FA as it is hosted on our internal network. The proposed solution is to have a standard username (email address) and password ...
31
votes
7answers
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. ...
1
vote
3answers
2k 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 ...
2
votes
2answers
405 views

XSS in HTML meta tag

There is a web application which contains a search function. When I search for aaaaaaaaxss I get this: <meta property="the:property" content="100 Results for aaaaaaaaxss (Page 1)" /> It strips ...
12
votes
7answers
1k views

Where to start with security testing?

Starting with a QA team that deals mainly with functional requirements testing and has little real security testing experience, what simple practical things should the QA team start doing to start ...
22
votes
11answers
8k views

Prevent my site from being copied

Is it possible to protect my site from HTTrack Website Copier or any similar program? Without setting a max number of HTTP request from users.
10
votes
1answer
1k views

How is time-based SQL injection different from other types of SQL injection?

I understand what a time-based SQL injection is, and I understand how it works (at least how it's detected/exploited). However, is there anything in specific which makes this type of injection any ...
2
votes
3answers
124 views

Multi-factor auth: implementing a “don't ask again for this computer” function

Many sites that support multi-factor authentication provide a "do not ask me again for this computer" option. I'm hoping to gain some insight into how this feature could best be implemented. My ...
0
votes
0answers
36 views

Best practices concerning pushing user registrations

Imagine an organization which possesses a lot of personal customer data in their internal databases. This organization creates a web application, and wishes to be able to send a registration link to ...
3
votes
4answers
316 views

Ethical brute force demo on a web login when knowing the password complexity requirements

We are currently having accounts compromised at a substantially high rate. Some in the organization believe that our password complexity requirements is enough to thwart brute force attacks. I wanted ...
1
vote
1answer
215 views

Path Truncation not working in PHP while exploiting LFI

From what I understand in PHP '/etc/passwd/' or '/etc/passwd/./././' should be treated just the same as '/etc/passwd' I am using PHP 5.4 and this does not seem to be true: php -r ...
2
votes
1answer
334 views

How are Ajax requests vulnerable to CSRF attacks if the Same-origin policy is applied?

What I know about CSRF is that a malicious website tricks a normal user into issuing a request to a trusted website using a form. I understand that is possible because we can post forms to different ...
2
votes
3answers
10k views

What does these warnings mean on an SSL connection by firefox (only)

I am connecting to a secure site and firefox mentions about identity: Owner: This website does not supply ownership information Verified by: Not specified Technical Details: Connection ...
1
vote
1answer
482 views

How to handle private key encryption/decryption for web application

In the process of designing a web app that handles public/private key pairs - a Bitcoin web app, specifically - I've had a lot of thought on how to securely handle the storage of the private key, ...
1
vote
2answers
306 views

I can upload any file to an ASP webapp/IIS server but I do not know where (which folder), is this exploitable?

I'm able to upload any file to an ASP webapp/IIS server. My first though is to upload an ASP shell but I don't know where the file has been uploaded. I have written a Python script that beggining ...
1
vote
1answer
53 views

Resources for reviewing multi-tiered webabbs in Spring, Hibernate or JAX-WS

I need some pointers to any resources (videos from any conferences or general videos, pdf, anything) for secure source code reviewing of multi-tiered web-apps in JAX-WS, Spring or Hibernate. I am ...
2
votes
1answer
195 views

Any reason I shouldn't be salting and hashing before putting through bCrypt?

I've been reading up on password storage and such, and have come to the conclusion that I need to be using bCrypt. I've got an implementation working correctly, but I'm wondering the best way to move ...
0
votes
3answers
158 views

How to leverage a stored XSS to perform a file inclusion?

I have identified a stored XSS and I'm wondering, how could I leverage that vulnerability to upload a shell.
0
votes
0answers
93 views

Managing keyczar keysets across multiple servers (google compute engine)

I'm a developer building a web service that will be required to store a few credentials for 3rd party services that would themselves provide access to customer data that I would consider sensitive. ...
3
votes
2answers
350 views

Computer-level logging by financial institutions

I am looking for the best approach to recognizing a specific computer and saving that computer as a "safe" login machine. My intuition points me to using cookies, but what value do I store in there to ...
-1
votes
1answer
105 views

Hash leaked online

Recently I Googled the email address of one of my friends, as I was just curious of what would come up. Lo and behold, he saw what presumably is his Gmail hash. It is part of a list of 10,170 email ...
0
votes
1answer
114 views

Access-Control-Allow-Origin possible threats on static JS file

As I am working on a research, I need allow users to read my JavaScript file using Ajax. However, I want to make sure about consequences of adding Access-Control-Allow-Origin header for just this ...
2
votes
4answers
950 views

Simple solution to XSS

I've got an idea as to how to defeat XSS so simple that it may work and was wondering if anybody had already done something similar. The goal here is not efficiency but security. In other words I ...
4
votes
1answer
800 views

Authenticating users on offline devices such as ipad

We are wanting to authenticate the user inside a webapp (JavaScript/HTML inside browser) running on a tablet, but want to be able to do this when the device is offline from the network. I realize this ...
3
votes
1answer
811 views

Securing sensitive data in a DB,is using H2 worth it?

I am designing a web application at the moment, and one of the requirements is to secure the user credentials as well as their roles. Now of course, besides the usual password hashing + salt +.... I ...
2
votes
2answers
202 views

Dual Authorization (Social Auth 2.0)

Can you see any obvious challenges to requiring 2+ users to confirm authentication requests using an association such as a friendship type of relationship. A practical application would be an ...
3
votes
2answers
129 views

Webapp vulnerability scanner that understands continuations

I'm researching XSS vulnerabilities in a web application which uses continuations. That means that for a given form, the URI the form data is posted to is unique and different every time. A first GET ...
5
votes
4answers
934 views

Suggestions to avoid cookie-hijacking in a web application

I've been developing web-apps for quite some time now. While making websites, the "remember me" feature is one of the most trivial(read as must-have-for-clients) feature to be implemented. Until ...
0
votes
0answers
81 views

HTTPS site not being captured by BURP

I am testing a website, basically mapping the site using burpsuite. But there is one link(https) that I can not process while the proxy on firefox is enabled. It asks me for certificates and when I ...
12
votes
4answers
534 views

How should I secure a contact form that appears on every page of a website?

My client has a small "Contact Us" form on every page of their website. They are adamant about not including CAPTCHA verification on these forms, to keep them easy to use, but I feel it is my ...
4
votes
0answers
573 views

A Google owned IP address accessed my outlook account [closed]

Today I got a warning from Microsoft saying that there was unusual activity on my account. Diving deeper I saw that there was a successful sign in from a Google owned IP address (according to ARIN). ...
1
vote
3answers
1k views

will google detects tor browser?

Usually while we browse Google through our i.p we will be redirected to respective countries,i normally use tor browser for anonymity,today while i browse google i got redirected to ...
1
vote
1answer
36 views

make specially encoded template available for file uploads

A comment to this blog post at sans.org about secure file uploads suggests making a pre-formatted template available for users when they need to do file uploads. The user would use the template to ...
0
votes
1answer
151 views

Some queries regarding SQL injection

[I'm not really sure if I should be posting this on SO or here. I think my questions might be answered if I have had a good experience with MySQL. But, I don't. So probably, most of you will ...
9
votes
5answers
1k views

Ads appearing in our application when they should not be

I received a strange issue reported by one of my web application users. Apparently they are getting "ads" within the browser window when using my application. I didn't add advertisements at all. It's ...
77
votes
7answers
33k 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?
1
vote
1answer
209 views

Content sniffing XSS vulnerable browsers

In order to prevent Cross-site scripting (XSS) in a private web application that supports image upload, I intend to reject browsers that are vulnerable to content sniffing. Which browsers are ...
9
votes
6answers
5k views

Why is php not used for banking sites or for a banking transaction?

Other programming languages popular on the web, such as Java and .NET, are used for banking sites. However, I've rarely (if ever) seen a PHP application designed to be deployed for a banking site. ...
3
votes
2answers
181 views

Is AES encryption vulnerable?

I was reading weaknesses in AES encryption. Unfortunately, I have a website that uses AES: Its database is almost entirely AES encrypted. Is there a real threat? Would it be worth to refactor the web ...
3
votes
2answers
628 views

Box web application security review - legality? [closed]

is it legal to do a security review/pentest of a web application that we bought and operate on our servers? Meaning, the whole infrastructure is ours + we bought a licence for the software. Can we do ...
11
votes
2answers
9k views

Why does Hydra return 16 valid passwords when none are valid?

I've been playing around with Hydra and DVWA and I've hit a bit of a snag - Hydra responds letting me know that the first 16 passwords in my password list are correct when none of them are. I assume ...
7
votes
1answer
99 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 ...
-2
votes
3answers
163 views

How do I communicate security issues encountered on an online banking platform?

Occasionally, I've produced (and reproduced) the HTTP 500 Internal Server Error on an online banking platform - quite a famous one. I suppose the errors are due to bugs in back end code, possibly ...