security aspects specific to the Java programming language and libraries.

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2
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2answers
10k views

Best Approach for removing XSS Vulnerability

I have been developing a Webobjects application, and I found that my application is vulnerable to XSS through URL, but not when malicious input like <script>alert("hi")</script> is input ...
0
votes
0answers
73 views

Considerations for using in-memory file system in a Java web application?

I was reviewing some code for a Java based web application accessible by authenticated users. It used the file system to work with temporary files, some of which have sensitive data. The input is a ...
13
votes
6answers
3k views

Client side password hashing

Edit: Updated to put more emphasis on the goal - peace of mind for the user, and not beefing up the security. After reading through a few discussions here about client side hashing of passwords, I'm ...
1
vote
1answer
204 views

Is there a way to verify a signed XML in Java

.NET has this great way to sign and then verify the signature of an XML file. Is there a way in Java to verify an XML file that .NET has signed this way? thanks - dave
1
vote
1answer
58 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 ...
4
votes
1answer
409 views

What is the best way to store password in memory (RAM) in Java?

Imagine there is a login form in Java application. We need assign usename and password to variables. Moment after we can Hash or HMAC password and keep it just for authentication step (no caching). ...
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 ...
1
vote
1answer
94 views

Storing encryption passphrases in memory in Dalvik?

Given KeePassDroid, I'm considering some of the security implications of accessing KeePass databases on an Android device. In the native applications for Windows, OSX, and Linux, whenever the ...
1
vote
1answer
235 views

Using cookies for cross domain authentication

I have an web app 1 which would do the authentication of the user. After that I want to forward the request to another web app 2. Now web app 1 will generate some hashcode which I can authenticate in ...
0
votes
1answer
207 views

How come PBEWITHSHA256AND128BITAES-CBC-BC violates the 128bit key limit?

In my Java application (which use StandardPBEStringEncryptor by jasypt), when i use the PBEWITHSHA256AND128BITAES-CBC-BC algorithm instead of something weaker such as PBEWithMD5AndDES, i get an ...
3
votes
1answer
90 views

Is return oriented programming applicable to pure Java code?

I'm interested in ROP in the context of Java. For now, I don't consider the native code of the Java virtual machine. Is return oriented programming applicable to pure Java code?
0
votes
2answers
399 views

What's the best way to authenticate an user using a websocket?

I'm creating a multiplayer game(based in websockets) which runs directly from the browser and which has multiplayer functionality. Each player needs to have his own account(Username and password). ...
2
votes
1answer
248 views

Are Java applications vulnerable to CVE-2014-6321 (WinShock)?

CVE-2014-6321 (also known as MS14-066) is a heap overflow vulnerability discovered by Microsoft engineers in Schannel, the SSL/TLS implementation used by Windows. My Java application uses SSL (JSSE ...
6
votes
2answers
913 views

Is TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 a safe cipher suite to use?

Is TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 a safe cipher suite to use for a TLS 1.2 connection to a Tomcat server? What are potential weaknesses or better alternatives? I am looking for a cipher ...
10
votes
3answers
2k views

Java SecureRandom doesn't block? How?

I know from experience that reading from /dev/random blocks when the Linux kernel entropy pool runs out of entropy. Also, I've seen many articles and blog entries stating that when running on Linux, ...
-4
votes
1answer
92 views

How to create a secure channel in Java?

I am creating a certification server which takes some required details like name, email etc from clients and issues public and private keys using RSA along with digital certificate. Initially all ...
0
votes
1answer
243 views

Auto deploy war file (backdoor/shell) to particular folder [closed]

I am in the midst of a pentest. I have managed to uploaded a war shell (backdoor) in c:\test\ which is automatically deployed in a folder, for example c:\test\tmpbrowser.war. The application which I ...
0
votes
1answer
161 views

Dump SSL traffic from a Java applet

I have a smartcard that can be read by websites using a Java applet (see http://www.springcard.com/online/applet_pcsc/). I would like to monitor and is to replay packets going from this java applet to ...
1
vote
1answer
99 views

On File delete, using java File delete method what could be the security issue?

In my case, the static code analysis tool shows the issue when it founds the code like this boolean status = file.delete(); It issues the security vulnerability saying the validation is ...
2
votes
1answer
311 views

Client Hello message suggests cipher suite which is not in the list specified by setEnabledCipherSuites() method

In my code, I use JSSE6 API to specify a list of enabled cipher suites. I aimed to only allow 168 bits or higher encryption cipher suites, below is a part of my code: /** List of 168 bits encryption ...
1
vote
1answer
209 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 ?
6
votes
1answer
483 views

Is java Client vulnerable by POODLE?

I have a Java based application (running on java 5 or higher) that establishes an SSL connection towards an Apache tomcat 7.0.47 on java 7. From what I understand, to exploit POODLE you need a client ...
-1
votes
1answer
74 views

Exchange of encrypted files through a server

I have a thing to do, that basically bases on a server that is honest but curious. Therefore I want the server to have the public key for encryption and it will encrypt files during the process of ...
0
votes
1answer
264 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 ...
80
votes
7answers
11k views

Why do I hear about so many Java insecurities? Are other languages more secure?

I really like the Java programming language, but I continuously hear about how insecure it is. Googling 'java insecure' or 'java vulnerabilities' brings up multiple articles talking about why you ...
0
votes
1answer
133 views

jRAT virus on Linux

I dumbly downloaded a .jar file that contained jRAT. When run, it stalls, gives a FileNotFoundException, then crashes. When I ls'd, the jar was there. When I cd'd out and back in, the jar was gone. ...
2
votes
1answer
142 views

How to autenticate properly in Java

I have to write some login module for Java EE application. Previously i was using JBoss security - provided login and password, called HttpServletRequest with login method and JBoss security did the ...
1
vote
3answers
200 views

Capture query to MySQL in Server

I want to capture queries to MySQL from my web-application on my Linux-based Server. MySQL port is 3306 and my web-application in on port 8181. So I started using tcpdump as follow: # tcpdump -x ...
0
votes
0answers
33 views

Authentication for Restful web services [duplicate]

I am building a restful web services. My requirement is that I have to provide authentication for accessing the webservices. First I tried with basic authentication. Which is working fine, but ...
1
vote
3answers
742 views

Java AES encryption output length

I am trying to encrypt few database columns (string values) using Java AES algorithm. This is to protect certain sensitive data. For some users these data should decrypted. In Java AES encryption, if ...
0
votes
2answers
289 views

Can we hide a constant hashed key used for AES encryption of a password?

Are there any methods in java to hide a constant hashed key which is embedded in a class? FYI, the key is used to AES encrypt a password used to authenticate a Web Service which would only take a ...
4
votes
4answers
283 views

Vulnerability exploitation in Java

I am not intimately familiar with Java, so this could be a stupid question. In a C program I can find buffer overflows or may be a ROP based exploit to run custom code. How is it done in the context ...
1
vote
1answer
169 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 ...
24
votes
4answers
101k views

How can I export my private key from a Java Keytool keystore?

I would like to export my private key from a Java Keytool keystore, so I can use it with openssl. How can I do that?
1
vote
1answer
81 views

Developer Security Training .NET / JAVA [closed]

Hello my team is tasked to perform security focused training for developers (.NET and JAVA). I have used WebGoat to demonstrate OWASP Top 10 type security vulnerabilities and am looking for a similar ...
4
votes
1answer
1k views

Are any Java Card 3.0 smart cards available?

The Java Card 3.0 specification (draft?) came out in 2008. It is now 2013. Are there any existing smart cards that actually implement the specification? How about USB tokens? The best I've found is ...
-6
votes
1answer
2k views

How to decrypt the encrypted data, in SHA256, of mysql database? [closed]

I have some data in column of table of mysql database in the encrypted form applied with SHA-256. How to decrypt that data using Java. I stuck at this since 4 days. Please spend 5 minutes of your ...
1
vote
4answers
282 views

Protecting Password in Code

I am writing a program in Processing (which is basically java), that (amongst other things) downloads files from a FTP Server. To connect to the Server the program needs the correct FTP-password, ...
0
votes
1answer
51 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 ...
1
vote
2answers
699 views

Learning to script tools in Python and general Pen Testing

I want to learn Pen Testing and already know Java and have been learning Python and am fairly comfortable with Python syntax. I also have some knowledge on Linux and TCP/IP. My questions are: How can ...
1
vote
1answer
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 ...
3
votes
1answer
3k views

Encrypting data within SQLite database in JAVA - How to store key?

So, a bit of context before I start may be handy. I am developing a JAVA desktop application which will use an SQLite database to store/process data. The application will utilize authentication to ...
-1
votes
1answer
79 views

How can I get confirmation of new security problem in struts2?

I just read about this new struts2 security problem. I want to tell our developers to patch it, but I wish for some more sources first. The only source he cites is in another language. I guess I ...
2
votes
2answers
672 views

How do I Mitigate Directory Traversal when User-Supplied Input is a Mandatory Business Case?

I have an instance where we have an application that requires the ability to set up sftp commands that are specified by administrative users. They are configured through the front-end of the ...
1
vote
1answer
343 views

256 Bit Key into AES 128 same output as 256 Bit Key into AES 256

I have two different crypto libraries I created, one is in java and uses the standard built-in java crypto libraries. The other uses openssl and has been wrapped in java through the JNI. I'm ...
1
vote
0answers
29 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.
4
votes
3answers
937 views

Protecting the Java keystore with a weak password, what's the risk?

From my understanding, the Java keystore contains certificate information, but this information is public (i.e. other machine certificates which you want the local machine to trust). Is there ...
2
votes
3answers
3k views

(Android) hacking server by a simple socket

I have written an Android game. Now, I want to connect the marks of the players. The code below is the client side program, which send their names, countries and marks to the server. Basically, I use ...
0
votes
0answers
79 views

What curve and key length to use in ECDSA with BouncyCastle

I'm developing a client/server system in Java which is not interacting with third party software, so I don't have to worry about compatibility. At a certain point, I need the client and server to ...