Application security - Specific to securing an application rather than the connection, infrastructure, browser etc

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What does it actually mean when someone says their website is hacked?

I have seen many people say that their website has been hacked using some vulnerability. I never fully understood what this means. To me the only way to get control of website is get the FTP ...
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1answer
1k views

Changing user account passwords from PHP script - vulnerabilities? [closed]

I started a thread a while back asking for suggestions on a good (good=fairly secure) way to allow users to change their account passwords via a PHP script. (WHY? because on this particular server, I ...
6
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1answer
191 views

What responsibility do I have in continuing another developer's work?

My question is related to this one. I did not found anything googling around and that is why I am asking. This question I am the sole web developer for a firm, and I manage everything, from ...
0
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3answers
146 views

Does including decorative HTTP headers into server reply pose extra security risk?

Suppose I reconfigure my HTTP server to add the following HTTP header into every reply: X-Hello: Hello! or some other presumably funny text. Can this have any negative effect on the server ...
10
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3answers
880 views

Is it preferable to perform encryption using database functions or code?

Several databases I am familiar with provide functions or modules for encryption. Examples include dbms_crypto for oracle databases and built-in functions for MySQL. Most of the commonly used ...
2
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2answers
326 views

Checklist for securing MacOSX

Is there a checklist for securing MacOSX machines?
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2answers
220 views

Is there guidance that says all sessions to be logged off when a user changes their password?

Often when an account is hacked, security guidance is to change your password. However I've noticed that changing a password sometimes isn't enough to log out of other sessions that are active. Is ...
1
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1answer
91 views

sigsegv in php5.3.10

I found an overflow situation in php5.3.10. Probably it's not 'something new', but if I can understand this, it will help me to find this kind of bug faster in the future. What can I do to check ...
2
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4answers
2k views

Is it necessary to scan users' file uploads by antivirus?

Web application allows users to upload files. Is it necessary to scan those files by antivirus? I'd want to hear answer in two scenarios: Type of file isn't checked when uploading. They are stored ...
7
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4answers
292 views

Limited JavaScript app scenario: Attack vectors and mitigation

I'm going to be developing a single page JavaScript app which allows input via a textarea. This input is never sent to the server, never shown to another user, and will only be persisted in browser ...
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2answers
3k views

IS Maltego is the best forensic/intelligence solution out there? [closed]

i am looking for the best intelligence forensic software that will give me the best solution for gathering information around the web . please recommend me the best software out there ... and if you ...
15
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5answers
1k views

Application security training for developers [closed]

I am trying to establish an application security group within an organization and although there is a plethora of courses for penetration testers, i fail to find an equal amount of training courses ...
5
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2answers
5k views

Best way to securely set a session cookie on another domain

We currently have 2 sites http://www.foo.co.uk and https://secure.foo.com. The www site does not have an SSL certificate and is on a different domain. We have a login button on http://www.foo.co.uk ...
22
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2answers
17k views

How to exploit HTTP Methods

Many security scanners like nikto, nessus, nmap, and w3af sometimes show that certain HTTP Methods like HEAD, GET, POST, PUT, DELETE, TRACE, OPTIONS, CONNECT, etc are vulnerable to attack. What do ...
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1answer
162 views

Mac app purchase validation

How do I sell a mac app off of my website without somebody being able to copy-and-paste the app to some friends after he buys it, etc.. I understand that you can use receipt validation when selling ...
3
votes
2answers
717 views

Added security risks that come with 3-tier software architecture

Are there any added security risks that come with using a 3-tier architecture such as MVC in a software project? I got asked this today, and my gut reaction was "I don't see why there would be." ...
3
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1answer
86 views

Is it possible to verify identity of site that sent request to you?

I'm developing a JS widget that can be embedded by 3rd party websites. When widget is shown, it sends request to my site. When this request is received, I know that it was shown to the user and pay ...
7
votes
5answers
559 views

How do small businesses handle web app security?

Everything on Owasp's top 10 list, how do current small businesses (< 1000 employees) handle web application security, along with mobile security of their applications? Do they care about info/app ...
3
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2answers
334 views

Secure Spring FrameworkUser Management

I got asked this question: "Any decent reusable / plug-able Spring user management systems (registration, change pwd, reset etc)? How do you guys do authz in Spring, including managing those roles ...
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2answers
90 views

Development-led security vs administration-led security in a software product?

There are cases where you have the opportunity, as a developer, to enforce stricter security features and protections on a software, though they could very well be managed at an environmental level ...
8
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1answer
1k views

How to use postMessage securely

postMessage is a primitive introduced in HTML5 that web pages can use for cross-origin communication. What do I need to do to use postMessage securely? What are the primary security pitfalls or ...
6
votes
4answers
1k views

Protecting against CSRF when a form is being submitted via an AJAX call

I'm using anti-CSRF tokens on all my forms to prevent CSRF attacks. Also, the tokens are being saved in the $_COOKIE variable to validate against the value I get from the form. I'm resetting the token ...
2
votes
2answers
962 views

Is Drupal's filter_xss enough for filtering HTML?

Drupal has filter_xss function. Is it safe to use for filtering arbitrary user HTML input? If not, what should be used instead when using Drupal 7? This questuion is a duplicate of Drupal's built-in ...
6
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3answers
681 views

How does KeePass master key derivation increase security?

I don't understand how KeePass key derivation increases the security of the password db at all. First I'll try to explain what I understood from the key derivation described here. I'll use some pseudo ...
14
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4answers
2k views

Tools to help test the security of Android applications

What are some decent frameworks to test the security of Android applications? With frameworks I mean either software based to automatically scan these applications or a guide (like OWASP has for ...
11
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2answers
1k views

Why do some Java APIs bypass standard SecurityManager checks?

In Java, normally permission checks are handled by the SecurityManager. To prevent untrusted code from invoking privileged code and exploiting some bug in the privileged code, SecurityManager checks ...
2
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5answers
159 views

Documentation Platforms for Information Security Team

I am looking for ideas on documentation platforms focused specifically for information security and response teams. Is there anything that has worked well? What are some of the unique advantages of ...
5
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4answers
389 views

Automating Social Engineering Prevention

Being an advocate for DIO (defensive information operations), I have always been concerned about social engineering and its relation to server security. Giving administrative access to staff members ...
6
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2answers
1k views

Canonicalization & Output Encoding

I'm reading OWASP's Secure Coding Practices Checklist and under their "Input Validation" section they have an item that reads: If any potentially hazardous characters (<>"'%()&+\\'\") ...
4
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2answers
1k views

How to properly validate HTTP redirects?

I'm reading OWASP's Secure Coding Practices Checklist and under their "Input Validation" section they have an item that reads: Validate data from redirects (An attacker may submit malicious ...
2
votes
2answers
109 views

Is this logic security / performance wise or not?

Each physical user will have about 20 tables in the database. When a new user registers, another 20 tables will be created with access only for their new MySQL account. Data does not have to be ...
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1answer
59 views

Dangers of a vulnerability in a local installer?

I sent a message to my dev manager about a buffer overflow in our (widely distributed) installer, and received a response that it didn't matter as it wasn't server code. Other than the fact that if ...
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4answers
380 views

Should companies use Crowd Source Audit Platform for Manual Penetration Test?

As a CIO, CISO, CTO or Sys Admin, would you use a crowd sourced platform for penetration tests in order to improve your security issues? LE: So most of you guys downgrade, and said it's wrong to have ...
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2answers
513 views

Session management: Are the features of application server enough?

HTTP is a stateless protocol. However, when the user logs into a web application, he likes that some session information be preserved, such that he does not have to login again when he wants to go ...
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2answers
596 views

Where is future of computer security? [closed]

I know its kind of a "hard to answer" question, but I was thinking, googling and reading about it for a week and I still can't make a decision. So, where do you think the future of computer security ...
5
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1answer
4k views

Facebook page receiving improbable amount of likes from unknown users

A bit of an odd problem, but I'm not totally sure where to post this. I am an administrator for a facebook page that suddenly began receiving hundreds of likes in the past few days. This trend began ...
10
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2answers
2k views

How to protect against clickjacking attack but allow legit iframes?

I'm aware of modern anti-clickjacking approaches, such as X-Frame-Options header or framekiller scripts. But all these tactics prevent content to be inside iframe. But what if there is a requirement ...
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4answers
678 views

Security risks of hosting user-supplied images?

I have a program that will accept and fetch images from urls. It will check if the extension is .png, .jpg, etc... I will fetch these files and store them, they will be shown to users in a gallery ...
3
votes
5answers
452 views

Can web application do anything to prevent risk from client-side malware?

Client side malware (keyloggers, screenscrapers etc.) is a great risk. It can't be effectively stopped from side of ordinary application. Only users themselves can do some measures to prevent risk ...
2
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1answer
134 views

Types of attacks outside of AppSec and Vendor-Specific Systems?

I'm reading up on the OWASP Top 10 for helping me defend my web app against common "app sec"-type attacks (SQL Injection, CSRF, etc.). And in a recent question I was prompted to not only use OWASP Top ...
4
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2answers
495 views

OWASP Top 10? How about OWASP Top 1000?

Many people are aware of the "OWASP Top 10". I'm wondering if OWASP (or any similar authority) has gone above and beyond just the top 10 most commons attacks and made a larger list (e.g. the "OWASP ...
7
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1answer
266 views

Should an app remove or encrypt locally stored user data after a user logs out?

I’ve been poking around in the Application Support folder of a popular app, trying to extract some chat logs. (By “popular”, I mean that most people reading this will have heard of it. I’m not sure if ...
11
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2answers
910 views

Security quiz for developers

Does anyone know of a short security quiz that could be administered online, to test the security knowledge of a developer? I'm looking for something simple to administer and simple to grade, ideally ...
5
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2answers
229 views

Recommendations for documenting security code review

How should I document the results of a security code review? Does anyone know of any resources for reviewers that provide guidance on how they should document their findings? Maybe a document that ...
1
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1answer
212 views

Limiting database security

A number of texts signify that the most important aspects offered by a DBMS are availability, integrity, and secrecy. As part of a homework assignment I have been tasked with mentioning attacks which ...
1
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1answer
808 views

LFI or RFI from XSS?

Could XSS lead us to the Local File Include or Remote File Include? I read article that it's possible to upload shell via XSS vulnerability, but I still have no idea how it had been achieved.
1
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1answer
374 views

JS frontend for RESTful backend vs authorization

I'm building web-app. And i have concern about security issues. In world a lot of similar questions, but many of them does not have really clear answer(advise,suggestion). This is the reason why i ...
3
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2answers
776 views

List of Top security risk/attack scenarios for android application

WHat are the possible security risk/attack scenarios for android application. This is with regards to the OWASP top 10 Mobile Security threats discussed here: ...
0
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3answers
721 views

Can people use AES VPN tunnels to hide their activities from authorities?

I have read an article about programmers who use AES VPN tunnels when working remotely with clients from other countries. The article writes that this way their countries are unable to track their ...
2
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1answer
805 views

Example of attack trees in the web application security analysis

Here I am again asking for some informations about attack trees usage in web application analysis. For my master thesis I decided to study the usage of this formalism in order to reppresent attacks ...