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

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1
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1answer
114 views

Iframe postmessage fraud

I've reviewed some material here and in other sites relating to secure usage of Window.postMessage. There is a bunch of material regarding best practices but one of my questions remained unanswered. ...
-1
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2answers
133 views

How to get the information from the iframe displayed (ClickJack) to the user back to the attacker?

Just for knowledge I want to know how to get the information from the i-frame displayed to the user back to the attacker? Scenario : Suppose You are an attacker and you want to grab the private ...
0
votes
1answer
74 views

How I do get the correct the Tamper parameters from an internal web login [closed]

I am doing pentesting for a web application, but I do not know if am using the Tamper Data add on on mozilla correctly. Could anyone explain how to get the following parameters, and where do I need ...
1
vote
1answer
940 views

Using Random Numbers As Session variables

I am using randomly generated numbers as session variables to identify the sessions in a PHP application. To make further security proof what ways should I follow?
3
votes
1answer
3k views

Detect a server supporting SPDY?

With my current interest in the CRIME attack, I am currently trying to check if there actually exits a way to "fingerprint" a server that supports SPDY? My research lead me to believe only that the ...
1
vote
3answers
993 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 ...
3
votes
2answers
247 views

Web server interaction with a database server

It is common knowledge that any servers exposed to the internet needs to be placed in a DMZ. However, a web application sometimes need to get user input and updates to backend database tables etc. How ...
0
votes
3answers
269 views

Can an attacker spoof an IP address to access my .htaccess protected file?

Let's say I lock down my site through .htaccess and say DENY FROM ALL ALLOW FROM myip how involved is it for a hacker to to simply spoof their IP address to match whatever mine is and gain access? ...
7
votes
5answers
10k views

Hiding JavaScript source code

In a web-app should one strive to hide as much of the code as possible, for example from view source? In particular I was wondering should JavaScript be hidden, especially ones used for Ajax? I was ...
5
votes
1answer
334 views

Exploit SoakSoak injected in Wordpress

I have recently received an attack to my website and Google is warning visitors to not load the page. The malware is located in wp-includes/js/swfobject.js of my Wordpress and I had deleted it but ...
1
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1answer
124 views

Reflected file download Scenario

I'm making a Java-based web application that is intentionally vulnerable to Reflected File Download (RDF). White paper is here I read the requirements of reflected file download vulnerability as ...
4
votes
1answer
163 views

Burp Suite Active Scanning Wizard options

I have been making use of Burp Suite's active scanning functionality for some of my recent web application assessments and I had some questions about the active scanners ability to remove urls from ...
1
vote
2answers
245 views

CAPTCHAs: How does simple math in cleartext prove you're human?

I'm intrigued that many sites use seemingly random numbers with a random operator as a security check to validate that you're not a bot. Forgive my ignorance in captcha technology, but what is ...
2
votes
1answer
85 views

Redeploying multiple Secure sites on a single server

This may not be a great site for this question. I basically have approximately 10 VPS instances running a secured website each, each with their own SSH connection to a hosted Database. What I'm ...
-1
votes
1answer
129 views

TLS/SSL and password transmission

I am still getting confused with security topics. At the moment the advantages and disadvantages of some of authentication methods are still not very clear. According to OWASP Authentication Cheat ...
21
votes
1answer
18k views

What key exchange mechanism should be used in TLS?

There are many key exchange mechanisms that can be used in TLS. Among them are RSA, ECDH_ECDSA, ECDHE_ECDSA, ECDH_RSA, ECDHE_RSA and others. Which of these are more cryptographically secure and can be ...
0
votes
1answer
352 views

Alternative ways to exploit this path traversal

I've got an application vulnerable to directory traversal (I know this because it's part of the wording of the question). The application has two directories, public and private, and two php files: ...
-3
votes
1answer
90 views

What is the Impact of TRACE Method? [duplicate]

What attacker will benefit of TRACE Exploitation and What is the Recommendation to fix this issue?
0
votes
3answers
153 views

Effect of mail bombing

I have option in my application which send an invitation email to another user. Someday ago, one of my friend told me that, attacker can flood any email using this function. And i have checked that ...
4
votes
1answer
515 views

Why are CSRF tokens used so often?

CSRF tokens are used a lot. The server sets a token in cookie for that domain that either (1) include in the HTML form or (2) Javascript can read and include in the request. The server verifies the ...
50
votes
12answers
10k views

What to do about websites that store plain text passwords

I recently received an email from a popular graduate job web site (prospects.ac.uk) that I haven't used in a while suggesting I use a new feature. It contained both my username and password in plain ...
2
votes
2answers
177 views

Should every post request include csrf token?

What is the vulnerability level if the anti-csrf token is not sent with every post request? (If the vulnerability levels were high, medium and low). I understand for critical functions like login etc ...
3
votes
3answers
283 views

W3af and automated vulnerability scanners vs manual testing

How effective are tools such as w3af in looking for web app vulnerabilities compared to looking for vulnerabilities manually? Are they able to find all vulnerabilities from OWASP top 10 such as ...
2
votes
1answer
434 views

What is the shortest malicious XSS possible? [closed]

Sometimes you stumble upon input fields that don't escape input properly, but who still appear to be to short to actually be used for anything malicious, at least to someone with my limited ...
0
votes
1answer
173 views

Is dot character safe against sql injection?

I'm modifying the search module of prestashop in order to be able to search strings containing dots : . Prestashop uses its own sanitize functions against mysql injection vulnerability (yeah...) and ...
14
votes
4answers
10k views

Is “Why Should You Avoid AES In MySQL?” true?

From a 2012 Smashing Magazine article quite a bold statement is made to avoid AES in MySQL itself. Or as they put it "Why Should You Avoid AES In MySQL?". However, if you search for SQL encryption, ...
1
vote
2answers
91 views

Is it considered a CSRF if it requires a unique identifier which is not a CSRF token - not tied to the user session?

Consider an end point such as below. Let's imagine that this endpoint updates an address of the signed in user, changing the zip code. The address to update is identified by the address ID ...
1
vote
1answer
64 views

What could happen if regex metacharacters using named capturing group are not encoded?

Let's say that a web application take a specific input from the user (e.g., search form), apply a Java regex with named caputring groups on it and use the final output to do other stuff (e.g., look ...
2
votes
1answer
183 views

How zip symlink works?

I've seen lately some bugs that used zip symlink technique , can anyone explain how this vulnerability works , how attackers use it to exploit applications? Thanks
15
votes
6answers
3k views

Is XSS a server-side or client-side vulnerability?

My colleagues claim that XSS is a vulnerability on the server side. I always thought that this is a client side vulnerability. Which one of us is correct, and why?
0
votes
1answer
158 views

Open source alternatives to tamper data

I'm developing a browser(firefox) plug-in which essentially checks for malicious input. My current approach is to store all input fields sent in GET/POST requests, try to heuristically determine ...
1
vote
2answers
160 views

Is it possible to restrict email accounts within one computer?

can emails(e.g gmail)can be configured to open-up only in my laptop ,my operating system is windows 8 and is it possible to restrict my gmail account to be opened up only in my computer?Usually we ...
0
votes
1answer
65 views

What technique should I use to prevent unpermitted access to my REST API

I need to build an REST API that can be accessed via HTTPS when given valid credentials. How should I implement those credentials? I am looking for advice whether I should use plain old passwords, ...
3
votes
1answer
1k views

Salt usage for Spring security?

I use the Spring security for Java web applications and I have written an authentication provider which is working without salt and now I want to either add salt or alternatively use the built-in ...
4
votes
1answer
276 views

How is Cross Site Flashing performed?

I read about cross site flashing in the OWASP testing guide. I know the difference between XSS and XSF. But what I am looking for is how attackers perform a XSF attack. How is it possible since there ...
3
votes
1answer
836 views

Are there modules to harden Symfony 2 sessions?

We're looking at building a new app on top of Symfony 2, but security is our top priority. After digging around a bit, it seems that there are a number of built-in options for Session management (eg ...
1
vote
2answers
274 views

How to implement password reset functionality without becoming susceptible to cross-domain referer leakage?

I have typically implemented password reset functionality by sending a link that included something like this: http://example.com/pwreset?id=userId&resetToken=superSecretResetToken On my pwreset ...
13
votes
2answers
3k views

Best practice in web application security authentication to avoid bruteforce attack

I want to cover the possible cases of attacking. My application already has captcha and two-factor authentication, but how can I avoid a tiny attack without annoying my users? The possible cases that ...
4
votes
3answers
184 views

Does PHP have a XSS API?

ASP.NET has a cross site scripting API by default, however does PHP have a cross site scripting prevention API?
-4
votes
2answers
304 views

What is the best exploit of XSS within 100 characters? [closed]

I found a vulnerable php script on my website. The script allows an user input (textarea), which is not encoded by htmlspecialchars(). Therefore it is possible to add html and javascript code. The ...
3
votes
1answer
147 views

XSS: terminology [closed]

Where does the name XSS come from? Why "cross-site"? Also, the book "The Web Application Hacker's Handbook" says that the name XSS is a misnomer when talking about "stored XSS" or second-order XSS ...
11
votes
1answer
741 views

Webapp2 security

I am coding a REST web application that runs on Google App Engine, it authenticates API requests to privileged data using sessions by cookies provided by webapp2_extras.auth and ...
2
votes
1answer
110 views

Best practice in securing a web server and an offsite worker

Suppose I'm hosting a web server and a separate box offsite that crunches data. The web server interacts with the worker using the worker's API over port 2888. What would be the design of a secure ...
4
votes
2answers
345 views

Placeholders for cshtml — ASP.NET

I'm learning Application Security, and tutorials such as www.asp.net discuss updating databases with placeholders, instead of directly using user input @{ var title = ""; var genre = ""; ...
3
votes
4answers
1k views

Is it ever safe to skip server-side validations?

I am working on a web app with a sign up form like below. The validations are all done client side using http://formvalidator.net/. I am well aware that client-side validations can be bypassed, but I ...
1
vote
0answers
49 views

Best way to authenticate for Funding balance with API call [closed]

I have an API call where a user adds to their balance when funds are low. The actual payment is done via Braintree, but I need to allow the user to make that call via their API. What would be a good ...
3
votes
2answers
563 views

How to protect my API endpoints

I have an API written in nodejs and I have a frontendapp written in angularjs. I want my API to be called only through my frontendapp and not from any other source. e.g. I have an endpoint called ...
2
votes
1answer
273 views

Automated tools to test Struts OGNL security vulnerabilities

I'm looking for a way to find Struts2 OGNL vulnerabilities (specifically http://www.cvedetails.com/cve/CVE-2013-4316/ and http://www.cvedetails.com/cve/CVE-2013-2251/. ) I know that attackers ...
-1
votes
1answer
54 views

Where do I start securing my system? [closed]

I am working for a company with perhaps the least security possible. We have servers, databases, web applications, and websites that are all unsecured. There only exists one account: root, which ...
28
votes
2answers
3k views

Do simple Linux servers really need a non-root user for security reasons?

Playing devil's advocate, Let's assume I purchase a Linux server from a hosting provider. I am given a password for the root user and am told I may login using SSH. The only purpose this server has ...