security aspects specific to the Java programming language and libraries.

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Share and store RSA - public key in java server and vice versa

My requirements are: Requirement 1: Share public key to java server. Steps: Generate public-private keys in iOS app. Store the generated keys in keychain. Send generated public key to java server. ...
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862 views

Convert a DER encoded Certificate to PEM encoded Certificate

I have a p7b certificate(DER encoded) which I need to convert to a PEM encoded certificate so that I can import it into my keystore. I see that the openssl command below does the job of the ...
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1k views

Uploading JSP (Any kind of java code) to Tomcat without manager

I'm new to this site. I have a question concerning the upload of dynamic java code into an application running on Tomcat 7.0.34. I'm doing a penetration testing of a java website and found it's ...
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95 views

Symmetric encryption involving load balancers - can't randomize key?

I'm working on encrypting a web application's cookie. Using symmetric AES/CBC, I encrypt the cookie data before writing it out, and then decrypt it when reading it back in - the standard stuff. The ...
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276 views

NTRU java attack implementation

I'm researching NTRU cryptosystem and started research based on source code from sourceforge and bouncy castle(java language). Currently I'm reseacrhing attacks on NTRU, based on CVP and SVP. But I'd ...
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182 views

AppEngine Sandbox

Does anyone know how the AppEngine sandbox is implemented? I heard they use a SecurityManager with Java but surely they are using another layer as well like LXC. I've looked at the whitelist and there ...
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1k views

Hardening JRE deployment - webjava

I am trying to set up some hardened deployment settings for Java for the end-users' machines on my network. I have my system wide deployment config and properties files set up: ...
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319 views

Do XBAP applications have the same vulnerabilities as Java Web Apps?

In response to the popular decision in disabling Java Web Apps, there has been very little mention of XBAP applications. XBAP applications are similar to Silverlight but it offers more options to ...
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280 views

Is a browser with disabled scripts and disabled java enough against malware

Is a browser like Firefox with disabled scripts (for example via a plugin like no-script) and disabled java enough to be protected against dryve-by-malware from the internet. Of course this does not ...
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543 views

What security concerns exist in running a glassfish app directly on port 443

I have installed Apache http server in front of glassfish based on recommendations i had in this question. I have been told that i will run into performance problems along with security issues. I was ...
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4k views

How do I use OpenSSL with the Java Keytool?

I believe I understand how OpenSSL works, and I believe I have a good game plan for setting up an SSL server on my private network, but before I go through the process of downloading and configuring ...
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500 views

Network Sniffing Java Applet Authentication

Example, I have a java applet application, then this application is accepting userid and password as authentication. Can I sniff the userid and password on the network layer? Are the credential being ...
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743 views

PAP and CHAP implementation using Java

I want to implement PAP and CHAP based authentication in my Java project how can I implement ? is there any API available in Java for using that protocol ?
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1k views

How to best authenticate a desktop client with a scaleable backend via SOAP / REST service?

I'm trying to find a solid architecture for authenticating users against a database. I have a game client, which I plan to serve up a request with. The transport doesn't really matter, but at this ...
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66 views

What makes an Android application vulnerable to Cross-site scripting (XSS)?

Definition of XSS If you search the web, there are many different ways to define a cross site scripting attack. Simply put, XSS vulnerabilities occur when a malicious attacker is permitted to inject ...
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59 views

OCSP stapling implementation in JAVA/ Android

I am trying to implement OCSP stapling in JAVA. How can this be implemented ? How can we set OCSPStatusRequest extension for TLS. and how we can verify the response ? Hi, How can we implement OCSP ...
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48 views

Through signing process with HSM Luna, What device perform the signing?

I'v succesfully configure and test character String signin usign Java and HSM Luna SA through PKCS11. My question is, In wich processor cryptographic operations are perform? In wich way HSM Luna ...
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92 views

Rest WebService with signed requests in Java

I'm currently implementing a rest web service with Spring+Java+Tomcat and a cmd client to access it. The most important requirement is to restrict the usage to authenticated users - encryption isn't ...
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39 views

Sign java jars for security [closed]

We have an enterprise system that utilizes many in house jars, java applications, to run on a centos 7 linux system. How do I go about achieving the following in order of importance: Only signed ...
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33 views

Setup local Certificate Authority & integrate with SCEP

I want setup local Certificate Authority and issue X.509 certificates under my CA. In order to achieve this I am exploring following options such as: OpenSSL/OpenCA BouncyCastle Cryptographic APIs ...
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182 views

Is Java javax.servlet.http.HttpServletResponse sendRedirect() auto replace the carriage return(%0d%0a) to prevent Http Header Splitting attack?

I just tried to demonstrate a simple Web app program to simulate the Http Header Splitting attack but I failed. I realise that this sendRedirect() function has filtered my carriage return and replace ...
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31 views

PBKDF2 hashing over TLS for encrptig password [closed]

i wanna use PBKDF2 hashing over TLS for encrypting password and session and that way stop hackers from breaking into my connection. How to do it in java.
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225 views

Best approach for storing banking information

I am currently developing an auction desktop application. At the moment I am storing the buyer and vendor information in 2 separate tables within a MySQL Database. Currently the data for these tables ...
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1k views

Is it safe to use localstorage to store session variables and user password? [closed]

I'm trying to make a web application in Java with a login/session system using com.sun.net.httpserver and as far I know, it does not have an inbuilt method to this. So, I had the following idea: 1 - ...
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248 views

Checklist for securing JBoss

Is there a security checklist for auditing JBoss configuration files ? CIS and DISA provides security checklist only for Tomcat and Apache server. Is there any other ressources ?
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109 views

Need help to Webservice in Axis2 with https in java

I have written my webservice with https. but as per requirement i should provide authentication. so thought of going with https ssl. could any one help me with steps like moving http to https and ssl ...
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55 views

Should we allow JSPs to change on a running application server?

Should we allow JSPs to change on a running application server on a production system? My gut feeling is no. However, I can't seem to find any information to justify it. From a performance end, ...
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31 views

Should we protect web application source code from being stolen by web hosts through obfuscation? [duplicate]

Is it worth to obfuscate a java web app source code so that the web host cannot make wrong use of the code & probably even steal your business. If, so how to deal with this or how to obfuscate ? ...
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3k views

Can you write OS-related virus using high level languages like Python

It is a well known fact that OS-related viruses are commonly written in low level languages like C or C++ which require direct access to the kernel of the CPU , I am just wondering if its possible ...
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288 views

Any way to use Java (sun micro) without any concern of infection

My antivirus has kept removing a Java exp virus only for it to keep returning. Yesterday in frustration I decided to uninstall Java until I see some positive news about any patches regarding the ...
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1k views

What triggers a firewall to block a TCP socket?

I was wondering what would cause a firewall to block a TCP Java socket from connecting. What would trigger that?
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39 views

Risks of legacy JRE versions?

Certain business applications or legacy software require running older versions of the Java Runtime Environment on client systems, e.g. JRE6 or 7 rather than or in addition to 8. Assuming that ...
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143 views

Creating secure PIN in Java

I need to create cryptographically secure PIN number in Java using secret id for each user. This simple approach comes to mind: int getPin(String secretUserIdStr) { String pepper = ...
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717 views

Doesn't the same string encrypted with the same key generate the same encrypted value?

This is my page and class to encrypt the string entered and saved in database. Each time, the Key__c is the same, as I take it from custom settings. But when I enter abc and save two times, the ...
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507 views

What are the security features of JRE 8?

I was tasked with finding the security features of JRE 1.8 and compare it to JRE 1.7 update 51. When I try to look for new security though, it only shows ">JDK< Security Enhancements" (ie. Not ...
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326 views

encrypting a file with an RSA key

I wrote a java program to encrypt and decrypt files using AES algorithm in CBC mode and a random initialization vector. but there is something fundamental I'm not understanding:first I generate a ...
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101 views

Java is running even after it is disabled [closed]

To prevent adds and pop-up that seduce users to install or download viruses I have disabled Java. But I have noticed that even with Java disables Firefox is still running it. The pop-ups are coming ...
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139 views

Did I get hit by the recent Java exploit?

Looks like the website iphonedevsdk was responsible for serving up the malware that's been causing some of the recent security exploits. According to my browser history, I visited that site back in ...
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51 views

What makes an Android application vulnerable to Directory Traversal?

Definition of Directory Traversal Directory traversal is a form of HTTP exploit in which a hacker uses the software on a Web server to access data in a directory other than the server's root ...
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193 views

RSA key sizes v/s public key sizes

I am new to cryptography. I have an api provided by a bank. The banks says that they are using RSA algorithm with 2048 bits. We used this api first to get the public key. Here is the sample public ...
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95 views

Java desktop app vs web service [closed]

I currently have a desktop app written in Java (Swing) which talks to a C-based backend over SSL. I am trying to understand the pros/con from a security perspective to move to a web service model. ...
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70 views

What are the consequences of not upgrading to the latest version of java?

Suppose I need to convince someone to upgrade to the latest SDK version of Java? I have heard there are many security vulnerabilities with old versions of java but can't find anything that concretely ...
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80 views

Is it possible to run an encrypted java environment?

I've seen that virtual machines in virtualbox or VMware can be encrypted so that no one on the outside can access the disk, ram or CPU cache since the entire hardware is emulated and encrypted too. ...
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308 views

extracting JSESSIONID from document.cookie

I was trying cookie stealing on a java and spring based web application. Normally, a cookie can be obtained through <script>alert(document.cookie)</script>, but in the above code, cookie ...
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53 views

Why do people trust PlayFramework2 dependency management?

If you worked in a big company that was very security conscious, would you build a product based on PlayFramework2 underneath? Since it does automatic dependency resolution at load time, aren't you ...
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775 views

SQL injection is possible but selected queries not working

I'm black-box testing an application which uses java spring framework and MySQL in the back-end. When I insert a single quote (') in a text box field, the server returns a HTTP status code 500 ...
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395 views

Anti Virus Intergration

we have found an issue with some production systems that the Anti-Virus causes the program to become slow a lot of the times and generally interferes with the activity of our software. Now as far as I ...
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428 views

Can SHA-1 PRNG still create secure cipher keys?

I am concerned that a SHA-1 PRNG cannot produce an AES-256 cipher key with the expected 256 bits of security, or indeed any secure cipher key where over 165 bits of security are expected. The SHA-1 ...
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519 views

Can Veracode detect vulnerabilities in jsp files?

We have chosen Veracode to perform security assessment of our JavaEE code. We have been performing white-box security testing using Veracode. As I am quite new to Veracode, I was surprised to find no ...
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109 views

Signature Based Malware Detection

I am developing software for detecting malware based on signature, in Java. I have researched a lot for the approach to move ahead. I found that the basic idea is to store the existing malware ...