Application security - Specific to security concerns for an application that are independent from the underlying operating system, or surrounding infrastructure. Pertains to the design / architecture, source code, patching and maintenance cycle, or deployment and configuration of this software.

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283 views

Web-based intrusion detection integrating visibility into web app and database

Consider the problem of hardening an existing, database-backed web application, to detect attacks and stop them where possible. It seems like one plausible approach might be to build an intrusion ...
6
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2answers
580 views

How often is ASLR randomness refreshed, in Linux?

Most Linux distributions now use ASLR for many programs, to randomize the layout of memory. How often is the randomness used for this changed? If I re-run the same program multiple times, will it ...
3
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1answer
443 views

Defend against Blind ROP

At IEEE Security & Privacy, the blind return-oriented programming attack (blind ROP) was just introduced. In some sense, this is just another variation on ROP attacks -- but the blind ROP attack ...
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0answers
152 views

How do Android reverse engineering tools extract packages/ package hierarchy present in Android apps? [closed]

I have been involved in disassembling Android apps using baksmali and dexpler. Whenever I disassemble an app, I find the packages and package hierarchy (that would have been available in development ...
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1answer
164 views

What's the security impact of tampering with Google OAuth continue parameter?

What's the security issue of this scenario related to tampering with the continue parameter: Go to: https://accounts.google.com/ServiceLogin?service=[service name]&passive=true&continue=...
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4answers
11k views

Are SMS,MMS stored on the network service providers' servers?

Are SMS and MMS sent via a mobile phone stored on telecommunication service providers' servers before passing them to the recipient? Does it depend on the country or does every network service ...
3
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1answer
86 views

code optimization and security?

My background is in compilers/code optimization, and I'm wondering whether there might be any interesting applications of extremely aggressive runtime code specialization towards improving security ...
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1answer
244 views

Storage of the One Time Password Seed

I'm a student and I'm working on an OTP authentication systeme based on OATH using smart phones as tokens for the clients. My problem is the protection the OTP seed at both client and validation ...
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1answer
353 views

how to use hash passwords to retrieve keys from keystore or access database

How do I hash the password for a keystore? How do I then use the hash to retrieve something from keystore? Similarly, how do I use a hashed password for accessing the database? I have encrypted the ...
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3answers
293 views

cleartext passphrase for keystore

How is passphrase for a keystore to be stored? we have all passwords encrypted and the key to encrypt is stored in keystore , so how is the passphrase for the keystore to be stored? in clear text? if ...
4
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1answer
13k views

Is it safe to sign in to Google with password from desktop app like BlueStacks? [closed]

BlueStacks is an android simulator for desktop. After installation it will ask you to login with your Google account to download and install android app from play-store. My question is "Is it safe to ...
0
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0answers
23 views

What are the fields needed to check for SQLI, XSS, XSRF and Remote file inclusion attacks in apache access log file [duplicate]

I need to identify the SQLI, DoS, XSS attacks from log file. At which field these attacks will reflect in log file. Please suggest me some idea and send materials to me.
0
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1answer
189 views

Lock Windows to a specific app

Is it possible, using some program or application, to lock Windows 7 so only a specific app can be used, for example Word, until a password is entered?
0
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2answers
313 views

Registration Password

Is it best to create an application that allows a user to sign up with username and email at the beginning and password once you click the generated email sent to you or should the password entering ...
2
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1answer
151 views

Is there a way to report IP addresses scanning for Exploits?

We're currently running a web site using .NET, and I'm using the Elmah package to look at some errors and issues in real time. I've noticed that there are a number of errors in the log from IP ...
0
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1answer
205 views

Fuzzdb detected as Trojans [closed]

I recently downloaded fuzzdb from http://code.google.com/p/fuzzdb/ and my antivirus kept on detecting some of the files as Trojans. I need to know if these files are safe?
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1answer
2k views

Exploitability of use-after-free vulnerabilities

Use-after-free bugs are a particular class of memory safety bugs. How often are they exploitable, in practice? When you find a use-after-free bug in a program, is it often exploitable, rarely ...
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2answers
43 views

Is it possible to keep several files on windows partition after re-installing windows? [closed]

Is it possible to keep several files and programs on windows OS after re-installing it? because of someone can steal the device that uses windows OS, then just removes the windows and install another ...
0
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1answer
242 views

Secure Communication Between .Net Application and Website

Recently, We developed an application that we want it's users to pay for a monthly subscription in order to use it. So the first thing that came to our minds how to implement a secure way for our ...
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1answer
173 views

Unusual image may contain hidden data

I have received an image from a friend. This is the image. is there any way to detect any anomalies in this image. Thanks
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5answers
466 views

Outsourcing software development and its effect on security

Some companies build their own software. Others outsource software development by hiring contractors or other companies to build software they need. When we need to build new custom software, is ...
4
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1answer
467 views

Installing profile on “Good” Mail application give someone admin permission on my iPhone

My new enterprise use the app "GOOD" for the emails. But to use it, I have to install a GOOD profile with description : "Install this profile to enroll to encrypted profile service". If I choose "...
98
votes
9answers
65k views

Why can we still crack snapchat photos in 12 lines of Ruby?

Just came across this bit of ruby that can be used to decrypt snapchat photos taken out of the cache on a phone, apparently adapted from here. To my surprise, it worked no problem, considering the ...
2
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2answers
289 views

safe methods of generating session keys

So I have this web app where I'm supposed to generate my own session key to use in the session manager. I just have few questions about safe approaches to this. I believe to make this safe it should ...
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0answers
81 views

Is CVE-2011-1571 fixed in tomcat?

I dont see any record of CVE-2011-1571 being fixed in tomcat based on ASF' security reports for tomcat itself. Usually they specify the CVE number and information about the fix. This was 3 years ago ...
9
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4answers
381 views

What are the main security considerations that must be taken into account if you intend on creating a (localised) whistleblower website?

Also: Is it something that can be achieved with limited funds? I ask because I am intrigued by the obstacles that are in place.
0
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1answer
52 views

How could a comments plugin be securely loaded from domains people are already logged into?

The fundamental idea is to load a blog comments plugin (like Disqus) from a domain someone is already logged into to save users time and increase engagement. I like the facebook comments plugin ...
2
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2answers
137 views

Where is the Line? [closed]

A comment posted on one of my questions the other day raised a question in my head. I know that many site admins appreciate users reporting bugs and security holes, and as a user I appreciate people ...
10
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4answers
578 views

Does my UI need to be secure if my API is?

I'm working on a project that is creating two new, separate web modules (possibly even on different servers) to support a new web application, with one serving up a static JS-based UI and the other ...
8
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2answers
947 views

Zlib DEFLATE decompression bomb

Can you give me an example of a short data string that, when decompressed using Zlib's DEFLATE method, expands to something much much longer? More precisely: what is the nastiest decompression bomb ...
3
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2answers
2k views

API Security Testing Methodologies

I have been encountering more and more clients needing their API (usually REST) endpoints tested for vulnerabilities and wanted to reach out to see if anyone has some recommendations beyond what I ...
3
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2answers
276 views

Building a web application security focused team

I work as an application architect at larger company that builds web applications using both .Net and Java technologies. These are sold to and accessed by other businesses (not consumers). We have ...
5
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1answer
3k views

Why does Directory traversal attack %C0%AF work?

Introduction: I am trying to learn the basics of Directory Traversal. Question: While trying to understand the 2-Byte Unicode conversion of characters, I came across this_SANS ARTICLE that explains ...
0
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1answer
1k views

Intercepting HTTP requests from a Java Application [duplicate]

I was wondering if anyone knew of a way of capturing and modifying the requests sent out by a Java application over HTTP. I can see them in Wireshark, but I also want to be able to modify them in ...
2
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2answers
798 views

Required skills before jumping into vulnerability research

Hello I'm a beginner into IT security. I want to become ethical hacker. So I know how to use metasploit to write exploits, and how to use different fuzzers, but I think this isn't enough. I can read ...
5
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5answers
864 views

Penetration testing reported ZERO vulnerabilities. Does this mean my web app is secure?

I've spent many hours on whitebox testing to make sure my code was safe. From a theoretical standpoint, the code SHOULD be safe. I then used several widely known testing tools (including one that ...
2
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2answers
2k views

NX bit: does it protect the stack?

I once heard the NX bit was a panacea, then that it was not. One detail I've wondered about though: Does the NX (no execute) bit protect against code inserted into the stack and executed there? It ...
0
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1answer
86 views

How to pass an email address securely to a web application X embedded inside a web application Y

The scenario I'm trying to address is this: There is a web application Y which has an authenticated user. Inside Y, web application X is hosted (which belongs to a different domain). When X is ...
17
votes
3answers
1k views

Why CSRF Token has to be a Cryptographically Strong Random number, in Double Submit Cookies method?

I was just going through the OWASP's Cheat Sheet for CSRF Prevention. In the Double Submit Cookies method, I saw this the site should generate a (cryptographically strong) pseudorandom value ...
3
votes
1answer
3k views

Token authentication and storage / websocket issues

My application is running an API authentication that uses tokens rather than cookies. This leads me to ask a few questions : What is the most secure way to store the token ? By using random ...
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1answer
627 views

How can I succesfully pentest site with two factor authentication? [closed]

I want to use a commercial, automated tool but it cannot login successfully because the website requires a two factor authentication process using SMS. For testing, the SMS message is sent to another ...
4
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3answers
182 views

Can “remember me” be done securely on an accountless website?

I have a website that lets users submit a form without having to create an account and log in. However, in order to keep users accountable for their submissions, the form requires them to provide ...
4
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2answers
317 views

XSS when <, > and " are escaped

I'm pentesting a website that has a reflected XSS, or at least a vector for a reflection, but the issue is the following : It escapes <, >, " to their URL entities (not &, ) or () You are ...
16
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4answers
801 views

Tricky code to make memory-safe

I'm designing a homework challenge for students who are learning about memory safety and writing secure C code. As part of this, I am looking for a small programming task where it's non-trivial to ...
14
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3answers
5k views

Is SSL secure enough for a REST API - has anyone used PGP or AES to encrypt the actual data inside SSL?

Perhaps I'm being overly paranoid, but after reading recent news regarding network security I'm starting to believe that SSL isn't quite enough anymore for sensitive data transmissions. Ref: http://...
4
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3answers
335 views

Can a mismatched server encoding on HTTP POST or GET result in a security issue?

It is possible for a server to parse HTTP POST and GET data with a fixed encoding or one that is dynamic with the client's response. Consider the situation where a client uses UTF7,32 or any other ...
1
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1answer
4k views

Sqlmap - appears to be UNION injectable

I am using sqlmap for finding out sql-injection threat on our application. So, here is my url : " http://myurl.net/question/teaching/answer/sujan-justice?as=Course ", and i tried to perform the ...
4
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2answers
981 views

How secure is the private storage of a mobile app

Are there any know security flaws/hacks to gain access to the private storage(file system or SQLite database) of Android and iOS applications? What measures do Google and Apple take to "prevent" ...
1
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1answer
136 views

Reliability of windows OS security for “program files” safe guard

I want to do inter process communication between Firefox (via extension) and my application. Both reside in "Program files" (of windows 7 OS). I also assume that malware is running in the system and ...