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

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6
votes
2answers
459 views

Security issues with PHP Sandbox

I am working on a PHP sandbox for a Web Application Honeypot. The PHP sandbox will analyze a PHP file that may have been injected as part of an RFI attack. It should run the file in a safe environment ...
3
votes
2answers
10k views

How to use OAuth with Active Directory

I'm creating a REST WCF service and want to use OAuth to authenticate each user's request. The user accounts are stored in Active Directory so I have access to their AD login name on the client ...
17
votes
4answers
2k views

What is the point of the same-domain rule for xmlhttprequest when script tags/JSONP can cross domains?

I get that I don't want a page loaded from stackoverflow.com to be able to request gmail.com on my behalf and read my email--but this seems to be simply a cookie issue. Since JSONP bypasses ...
3
votes
2answers
183 views

Multiple extension vulnerability. Is this malicious file triggered during form preview or after it has been uploaded?

I'm looking at one of our compromised web server logs and we found that an attacker has uploaded a file with multiple extension. Below is the IIS log. The log format are as below. I have removed the ...
6
votes
2answers
3k views

Google Analytics on a secured site

Just read this article on Google Analytics and the risk of forged certificates, where it said: Sooner or later it's going to happen; obtaining forged SSL certificates is just too easy to hope ...
8
votes
3answers
9k 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 ...
2
votes
2answers
877 views

Why should crossdomain.xml be present if user-uploaded files exist?

In his book Michal Zalewski says: To protect your users, include a top-level crossdomain.xml file with the permitted-cross-domain-policies parameter set to master-only or by-content-type, even if ...
3
votes
3answers
361 views

What to do when asked for a weak password

The guys who made the security for my country's state bank are completely nuts in all senses. Their internet banking password must be between 8 and 10 characters, and contain only letters and digits. ...
1
vote
3answers
299 views

Deploying vulnerable web application online‏

I am deploying a vulnerable web application for students (about 100) in a university, that they can test online and am collecting all the traffic for research purposes. I am deploying this machine on ...
6
votes
2answers
1k views

Considering that SRP is better than SSH and Basic Auth, how can it be implemented in a website?

SRP is short for Secure Remote Password protocol, and provides a better way for passwords to be sent over the internet. I've read the information at it's Stanford University home page, the Wiki ...
4
votes
2answers
146 views

Exploits inevitably “cost of doing business on the Internet”?

After yet another exploit of and malware injection into his website, host Leo Laporte of the Twit network has recently asserted/been told by his security expert that falling victim to such attacks is ...
1
vote
2answers
211 views

Why the servers stores hashed password instead of relaying on private/public key

I understand why the SSL client certificates are not widely used (need to install them, problems with shared machines etc.). On the other hand when I log into the server the password is send to it and ...
27
votes
7answers
2k views

If I include a Forgot Password service, then what's the point of using a password?

I've implemented a Forgot Password service in the following way: User goes to login page, clicks on "Forgot password?" User is presented with a form that asks for their email address. Email is sent ...
2
votes
4answers
1k views

Without using SSL, what's the most secure way to make an AJAX request to a PHP page?

It was suggested over at stackoverflow that I try my question here. This is it verbatim: So, it's impossible to do AJAX requests securely without using SSL. I get it. You can either view-source the ...
2
votes
2answers
111 views

Does TLS-OBC only improve security of Web Browsers? Does it improve the security of SSH?

I'm studying the TLS-OBC extension and would like to know if it improves security of non Web-based protocols? Specifically, would it be of any benefit to SSH clients? (version 1 or version 2.x/secsh) ...
3
votes
3answers
221 views

What security standards should be implemented in a simple web application

I am creating a web application that basically reads/writes/updates information from and to a database on a server. I am knowledgeable in computer programming, but while seeking security standards, I ...
5
votes
3answers
339 views

What fraction of web sites are vulnerable?

It is known that security vulnerabilities are common on the web: many web sites are vulnerable. Is there any data on what fraction of web sites are vulnerable, and what fraction are secure?
6
votes
2answers
306 views

What fraction of vulnerabilities does black-box pentesting find?

Black-box penetration testing is one to check a web application for vulnerabilities. It can find some vulnerabilities, but not all. What fraction of vulnerabilities does black-box pentesting find, ...
2
votes
3answers
286 views

Securing dropdown boxes

I have been creating selection boxes for years, yet I never knew you could modified it with firebug and submit them with nonpermitted values, of course this wouldn't happened if the code was secured. ...
1
vote
3answers
156 views

How to reverse the communication for security

I have the following use case - There are two networks - internal network where the application server is deployed and has no internet access and external network that is accessible from internet but ...
8
votes
3answers
829 views

Is a mobile app more secure for mobile use than the “normal” website?

An untrained end user who uses a mobile web browser is vulnerable to phishing and can't easily verify the the authenticity (or security) of a website among other issues. Also, it is very easy to ...
11
votes
2answers
953 views

Interpolique: transparently preventing SQL Injection and XSS with base64 encoding, what happened?

For the keynote at The Next HOPE a couple of years ago, Dan Kaminsky unveiled Interpolique (the talk is really fun btw). The problem he raised was how to defend against injection attacks, including ...
3
votes
1answer
228 views

What servers or clients are immune to related-domain cookie attacks? (*.example.com)

In this question, I want to identify browsers, servers, or implementations that are immune from related domain cookie attacks (e.g. a.example.com vs b.example.com). Lacking any tangible solution, ...
1
vote
1answer
380 views

Web application software architecture: basic security

I am a complete beginner in the security topic and I know that I should read this, but I have a small question to which I hope exists a short answer. Let's say I have three components of a ...
2
votes
1answer
424 views

Active Directory: Should Workstations be separated from servers to protect from related domain hacks?

How should I protect domain joined hosts in the same AD domain from the Related Domain Cookie Attack? Suppose there is an AD forest called example.com. This company has a variety of internal and ...
3
votes
1answer
801 views

How to use DPAPI under load balance environment

DPAPI can be used to encrypt the secret data. We intend to use it in our web app to encrypt some data and store the encrypted data in database. When needed we decrypt the data and present them on ...
2
votes
2answers
157 views

For untrusted user upload sites: what should the contents of crossdomain.xml and clientaccesspolicy.xml be?

Flash has a long history of ignoring MIME types of files and reading the file directly for executable content or for cross domain execution permissions. That means a malicious user can take advantage ...
22
votes
1answer
2k views

What cookie attacks are possible between computers in related DNS domains (*.example.com)?

Here, several servers in the same DNS domain emit cookies under a variety of settings (scope, HTTPS, Secure) and another host emits a cookie with the same value. Example Suppose a user has the ...
12
votes
4answers
321 views

Sensitive information was placed in a publicly accessible folder. Who is responsible and how to proceed?

Background We have an IT staff who manages our server and a web developer who is not on the IT staff and has no root access to the server. All involved do very high quality work and I do not consider ...
1
vote
1answer
525 views

Wireshark log analyzing

I have the following Wireshark log and I want to categorize the attack. I think it prints the user under apache runs and then prints the system information. From this log can we determine if the ...
5
votes
2answers
1k views

Scanning DVWA with w3af - Unable to detect SQLi when security on low

I've been messing around with DVWA (Damn vulnerable web application) and w3af. I've been scanning DVWA with w3af, and have used the spiderMan proxy and http config to setup auth credentials to get ...
4
votes
4answers
763 views

Database Security Best Practices for E-Commerce Site [duplicate]

Possible Duplicate: Securing an E-commerce site I'm developing an e-commerce site in a LAMP environment. Is it advisable to separate data on to different servers (i.e. to have one server as ...
1
vote
3answers
190 views

Information Security standards in corporations

I'm developing a web based application. I want to create it so that it could be adopted by teams within corporations and large organisations that have tight IS standards. The initial organisations ...
2
votes
1answer
353 views

Tomcat IP restriction vs Two Legged OAuth

We have a server side API that is completely REST based. We are coding to secure them with two legged oAuth type authentication. We are planning to iPhone and Android apps in the future, but for now, ...
4
votes
2answers
1k views

Difference between directory traversal and file inclusion

I guess the title says it all. There seems to be no obvious difference between directory traversal and file inclusion vulnerabilities. But I guess there must be some difference, since the ...
0
votes
1answer
61 views

Is there a grading standard for security that I can apply to my MVC3 web site?

I'm looking for a standardised set of tests or scoring measures I can apply to my web site to be able to quantify it's standard or level of security. I can do some research and compile a check-list ...
3
votes
4answers
945 views

Can a CSRF CAPTCHA be defeated?

One defense that developers use to protect against a CSRF attack is to implement a CAPTCHA in critical steps. A CAPTCHA ensures that a human is at the keyboard approving the activity. But I've ...
1
vote
3answers
827 views

OWA Keep-Alive in http, even though it should be forced https

Yesterday, I got an alert from a client's IDS that a Base64 auth packet was detected. Looking at the Ascii decode, I can see that it is for their OWA (Outlook Web Access), and indeed, the auth info ...
5
votes
1answer
482 views

question for pentesters: PHP proc_open() in safe_mode

Can anybody explain to me how proc_open() is affected when PHP is running in safe_mode? As far as i have noticed, the command to execute is appended to a '/' - is there anything else and is it ...
3
votes
2answers
631 views

HTML Vulnerabilities

My question is three-fold. Background I was asked to do some vulnerability scans on a website with some holes (I think). On a particular page, I was able to escape the text field and write on the ...
8
votes
2answers
651 views

Should user be allowed to save password in browser?

The auditing company found a bug "The Auto-complete form attribute is set in password field". They suggested to disable autocomplete for this field to prevent disclosure of it "when working on shared ...
5
votes
3answers
555 views

Is this a symptom of an attack (DoS/DDoS)?

I work for an e-commerce website in my country and this is the second time we suffer an attack. At least, looks like one. We have a search functionality in our website and the supposed attacker is ...
13
votes
3answers
321 views

Malicious QR Code and Mitigation

I just started reading a little on QR code, so I'm not entirely familiar with QR Code capabilities, but a thought crossed my mind today. I scanned a QR Code on a postcard I received, and it ...
3
votes
2answers
341 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
vote
2answers
156 views

What due diligence is required for HTTPModules that run within IIS?

I noticed some HTTP Handlers in my Web.config that appear to intercept HTTP traffic and manipulate it. Since there has already been an exploit with a similar component produced by Microsoft, what ...
5
votes
5answers
2k views

Robots.txt security strategy?

Is there a way to basically have an allow all policy on your top level domain, and any subdomains disallow all? I would rather that my public facing app servers not get indexed, but from what I can ...
2
votes
1answer
614 views

DRY API Authentication Design Between Services

I am creating an API service that is going to require authentication. this will be the first part of a project that will include a front-end service for my website, and also open up the api for 3rd ...
0
votes
2answers
174 views

What is Greasemonkey / Userscripts and how does it relate to IT Security?

I came across http://userscripts.org/ and learned that it is popular among web-users to install something called "Greasemonkey" to allow client side scripts to run. What are the benefits of ...
2
votes
4answers
360 views

Clickjacking: can't browsers just forbid/reject placing transparent elements over frames?

Why not? Seems like this is only used for clickjacking, the solution should be simple enough.
3
votes
3answers
656 views

Android Pen Testing

I have been pen testing a random android app that uses POST method to send data to a remote server using HTTPS. I have set up a proxy and am able to intercept the traffic, however the POST method ...