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

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5
votes
3answers
812 views

Is it possible to use a GPG or SSH key for web based authentication in a secure fashion?

Let's say hypothetically I am writing a web application targeting technically inclined, security-conscious users who have no problems generating and using GPG or SSH keys. Is it possible to use said ...
4
votes
1answer
128 views

Possible to submit multiple POST requests using CSRF?

I am aware that you can execute a POST request using CSRF using the method below: <form name="x" action="http://site/index/dosomething" enctype="text/plain" method="post"> <!-- stuff ...
3
votes
1answer
189 views

Is TLS 1.0 sufficiently secure for a bank?

I disabled SSL2 and SSL3 in my Firefox browser, version 24. I only enabled TLS 1.1 and 1.2. Unfortunately when I went to my bank's website, I found that it didn't work until I re-enabled TLS 1.0. ...
10
votes
3answers
1k views

Security risks with JSONP?

What are the security risks with JSONP? Is using JSONP in a new web application reasonable, from a security perspective, or is it better to use a different method for cross-origin web mashups? If ...
2
votes
2answers
167 views

xss Scripting on clean-urls

I am learning about XSS vulnerability. I need to know what sort of XSS attack can be done on clean URLs. Clean URL example : //my url.net/project/public/#questions/question/edit/id/122/answer/1
1
vote
2answers
492 views

What is the need of security token to prevent CSRF attack?

I have a REST API which is running in one domain and I have a client in another domain. To prevent CSRF I have configured REST API to accept request originated from client application only. I have ...
0
votes
1answer
95 views

Where to perform authorisation in a web app?

Most web apps perform authorisation checks at the controller layer. This is basically ok, but complex apps tend to have repetitive checks. For example, there might be ten or so controller actions that ...
3
votes
3answers
430 views

Tokenless REST API security concerns

I'm designing an API in PHP/MySQL that, by its design, will not store a user's password in the database and thus does not generate authorization tokens for the client to hold. The reason for this is ...
2
votes
1answer
174 views

Reflected XSS - Automatic understanding of filters

I'm currently facing this possible reflected XSS vulnerability on a webapp: URL = http://www.test.com/login/?login=[PAYLOAD] When a user clicks on this link, it displays a login page that includes ...
1
vote
2answers
3k views

sqlmap unable to find SQL injection vulnerablitity

so i just started up with sqlmap to learn sql injection vulnerability on my application. Here I followed steps as per some tutorials. So this are the steps which i followed : sqlmap.py -u ...
20
votes
11answers
5k 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.
2
votes
1answer
337 views

Expose web service in a secure manner

Requirement I have a web service I need to expose on the DMZ for external communication. The web service communicates directly with a critical database that sits on an internal net. Current ...
3
votes
1answer
103 views

Designing a secure information system

Could someone please provide me with some guidance for a system I am designing... A general overview of the system is that it is to store information on staff and "customers" - this information ...
4
votes
3answers
448 views

Forgot Password? - sends email with plaintext password

A "reputable" education company that my university utilizes for it's Physics course online materials sent my plaintext password in an email after using the Forgot Password? tool. I know that this is ...
0
votes
1answer
79 views

How to track MAC policy violations back to HTTP request?

Suppose there is a web application under public load that runs under a very restrictive MAC (e.g., SELinux, TOMOYO, Grsecurity) policy. Suppose we detect and log a MAC policy violation like a file ...
1
vote
3answers
165 views

Are subdomains a cure for phishing?

Seeing as phishing is getting more popular and users are becoming less concerned about security, I am trying to come up with a solution for a new site of mine that can stop phishers. For instance, any ...
0
votes
2answers
123 views

Would multiple exposed bcrypt hashes of the same UUID v4 with random generated salt be too insecure?

I'm looking into implementing an ownership check on JSON objects and want to avoid going back to the database to ensure ownership of said object/record (i.e., to prevent a user from updating an ...
4
votes
1answer
201 views

CSRF and Flash/Flex

Flash and Flex clients can make RPC calls to a server using the NetConnection and AMF protocols. It's not uncommon to have these RPC calls setup to authenticate based on a cookie. I've heard ...
1
vote
1answer
98 views

Setting expectations of a vulnerability assessment?

Is it reasonable to refuse to guarantee that you will find 100% of security issues when doing a vulnerability assessment on a website? Even with companies like Google that have teams of security ...
-1
votes
1answer
98 views

Free Alternatives in Web-Application Mapping Software [closed]

Im new to hacking, i have reached a chapter in my book "the web applications hackers handbook" where im about to start bypassing client-side and actually attacking different technologies well before ...
5
votes
5answers
850 views

Does setting httponly prevent stealing a session using XSS?

If a session token is stored in a cookie that has httponly set, is there any way that a XSS vulnerability could allow a malicious user to steal a users session token?
4
votes
3answers
300 views

Using GET to submit username/password? [duplicate]

From what I understand using GET to submit usernames/passwords is a security issue because the username/password are part of the URL which can show up in browser history. Is this still an issue if ...
5
votes
1answer
437 views

What techniques do web services use to identify password theft?

I've noticed that some web services use a security scheme in which log-in attempts that have some unusual characteristics trigger extra authentication steps. For example when I try to login to my ...
0
votes
1answer
173 views

Possible to determine what plugins and versions are being used in a wordpress site?

I have been thinking about creating a Wordpress vulnerability scanner that would look for plugins being used by a Wordpress site and then search osvdb for known vulnerabilities. I'm curious if there ...
3
votes
2answers
95 views

System for securely authenticating content acquisition

I'm having trouble designing a system for authenticated content from my site distributed by other people. I'm working in Ruby on Rails, but I don't think that at a theoretical level my question isn't ...
3
votes
1answer
799 views

What is the best practice for storing a secret on the cloud?

This post on Securing Java Application Data for Cloud Computing offers a good introduction to using a Java KeyStore for securing encrypted data in the cloud. It neglects, however, to answer the ...
1
vote
1answer
111 views

Does Google Analytics collect any information about the contents of the web page?

If I enable Google Analytics on my web application, does the Google Analytics Javascript collect any information on the web page (any of the content on the page)? Does it collect any information ...
4
votes
1answer
289 views

Dangers of hosting an internal web application on a public web server?

Is it a bad idea from a security perspective to host both a publicly accessible website and a website that is only intended to be used internally on the same server? Obviously the web server would be ...
2
votes
3answers
269 views

Flash ignores Content-Type header, allowing XSS?

I recently read that the Flash plugin ignores the Content-Type header in certain circumstances. In particular, you can give Flash a URL, and the Flash plugin will happily fetch the content at that ...
1
vote
0answers
94 views

SIEM DSCC - Upgrade Fails and then web console doesn't shows anything

Since trying to patch, we can not access the Web Interface, the Console page is empty. We also tried to upgrade trough CLI but it returns this error messages Checking for undeployed changes... ...
6
votes
3answers
7k views

Does X-Content-Type-Options really prevent content sniffing attacks?

In Tangled Web Michal Zalewski says: Refrain from using Content-Type: application/octet-stream and use application/binary instead, especially for unknown document types. Refrain from returning ...
3
votes
3answers
888 views

User name enumeration?

From what I understand it is bad security practice to display informative failed login messages like: The email you entered does not exist Instead of Incorrect email/password combination ...
5
votes
1answer
254 views

Web Applications terminate strings on null-byte

I have just been doing some penetration testing on a site, and I have noticed (and I have noticed before but now seems like a good point to bring it up) that putting a null byte in the search string ...
3
votes
6answers
895 views

How to “demonstrate” man-in-the-middle attack?

I'm TAing a particular course on system security. A specific example is transitting the password in plain text when developing a web application (as part of a class project). Over the years a bunch ...
4
votes
2answers
361 views

Is Common Criteria (CC) a suitable standard to certify web applications

I never came across a web application that has been certified according to Common Critera. As far as I know there isn't even a protection profile available for web applications. What is the reason ...
1
vote
1answer
177 views

PHP gethostbyname security implications

I'm working on a PHP application. There is a requirement to find IP's by hostname and i have to resort to gethostbynamel for that. Looks like there is no other way. I was wondering if there are any ...
5
votes
2answers
489 views

Are RESTful sites safe against CSRF attacks?

I am having a debate with a coworker about whether our site is vulnerable to CSRF attacks. He is saying that since we are using RESTful AJAX requests for everything that CSRF is not possible. Say a ...
-2
votes
1answer
177 views

Identifying Visitor's using Proxy [duplicate]

I want to detect my website visitor's using any duplicate proxies ? If so how to avoid them? also how to identify the proxy is an HTTP proxy or a SOCKS proxy ?
1
vote
1answer
194 views

Securing Publicly Exposed MySQL Database for Group CS Project

Hello I am looking for some advice. For an Advanced C++ Programming Course I am taking another student and doing a project. For this project we plan on using a MySQL Database as our backend database.I ...
1
vote
1answer
136 views

Security Standards for storing private customer data

A certain government regulation in my country mandates all non-resident donors to provide a copy of their identification (usually, the passport). So, we ask the donors to upload a copy of their ...
0
votes
3answers
2k views

Malware Suddenly Uploaded To My Website! [duplicate]

This is my first question here on the IT Security section of Stack Exchange, so if there is any problems with my question I apologize. Basics Suddenly Google says that my website contains Malware! ...
2
votes
1answer
438 views

Website: Pre-Shared-Key Authentication

We have this web-application with high valuable (business) data. All communication is encrypted through TLS/SSL. While i consider this a really safe protocol, it can stil be compromised if someone ...
0
votes
1answer
235 views

How does the authentication flow with Azure Active Directory differ from Azure ACS?

I understand that Azure ACS acted as a STS that had the ability to redirect users to a given STS (OpenID, LiveID, Facebook) or authenticate using a local user/password account. In a passive situation ...
1
vote
2answers
196 views

What is this for a Request?

i see the following request-string (see complete example below) with the same request_parameters, but differing values, hitting all our sites/wafs. the scheme is always the same: ...
-6
votes
1answer
165 views

Suspicious random IPs requesting image from my server - botnet? [closed]

I've been getting a steady stream of requests for the same logo file from random IP addresses, many of which indicate they're mobile when I look them up. I'm at a loss to explain this. Anyone seen ...
1
vote
1answer
70 views

Benefits of Content Security Policy

I would like to know how really good is the content security policy header for preventing XSS considering the following : Many sites have inline JS / CSS. The request/ response headers can be ...
7
votes
3answers
461 views

How important is CAPTCHA on registration pages?

I am working on a site and I would like to add CAPTCHA to the user registration page to prevent user name enumeration. I am working with a front end developer who feels pretty strongly that we should ...
15
votes
5answers
1k views

Is it possible to inject values in a drop down list?

Say a ASP.NET page, or any html page for that matter, has a drop down list with a bunch of prices. On posting the page, the code looks at the selection of the drop down list for a computation. Is it ...
17
votes
5answers
1k views

Why do some websites and programs restrict password characteristics?

There are some websites and even programs that I use that have rediculous password restrictions. Lots of forums for instance restrict passwords to ~32 characters. Others enforce a restricted charset. ...
0
votes
3answers
123 views

Securely transferring data from service provider to client

Suppose a client C wants to transfer form a service provider P, who collected data on behave of C using a web-application. Additionally, suppose the amount of data is larger than 100 MByte and ...