security aspects specific to the Java programming language and libraries.

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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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1answer
99 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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1answer
138 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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1answer
80 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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1answer
43 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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1answer
492 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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2answers
230 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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1answer
329 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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1answer
444 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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1answer
37 views

CSRF Guard - Can it protect service call also?

I'm implementing CSRF guard in my web application. I have done all the required configuration and I can see token getting generated/injected into the request header. Let me tell you application's ...
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1answer
78 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 ...
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2answers
76 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). ...
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2answers
170 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 ...
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1answer
104 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 ...
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1answer
432 views

What is the risk of installing Facebook Video Calling jar file?

I'm trying to talk with somebody on Facebook, but after many Facebook privacy scandals, it's a big question. Secondly on OSX, it's giving me the error that “FacebookVideoCalling_v1.6.jar” can’t be ...
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1answer
68 views

Is it Possible for a Java Applet to Record Cursor Movements Inside the Applet? [closed]

I am using my mouse to interact with a Java applet in a browser. Clearly the party that owns the Java applet can record where I click inside the applet. What I'm wondering about now is whether it is ...
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1answer
50 views

Executing external process from Java security

What are security implications of executing external processes using Java ProcessBuilder/Process? Example: Runtime rt = Runtime.getRuntime(); Process proc = rt.exec("processExecutable"); InputStream ...
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1answer
61 views

Private and public key need to have same algorithm?

The private and the public key from the cert must have the same algorithm, correct? EDIT: Yes of course pub / priv are a key pair. So this code would be legal, to be more flexible (e.g. ECDSA or DSA): ...
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1answer
202 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 ...
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1answer
77 views

How to modify a certificate using getTBSCertificate() method

I want to show that if I modify one bit or byte from a given X509 certificate the signature verification results false (because this modification results different hash value from the certificate). ...
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1answer
260 views

what freeware tool for java source code review? [closed]

I need freeware tool for source code review for my application which used WebSphere Portal and Java as technology. Please provide me relevant information or links regarding this.
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1answer
1k views

Java SSL factory connection to SSL server (with just public-key and certificate)

I am trying to connect to a SSL web server. We currently have a pkcs12 file and connect, that is our private-key and certificate. Is it possible to connect using Java code with a public-key and ...
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2answers
865 views

Client Authentication by certificates in Google APP Engine java

I am writing an application in Google APP Engine java which authenticate the user by its certificate. I have created a self signed certificate using keytool at client side. I also enable the HTTPS ...
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1answer
939 views

How do Java applet exploits work? [closed]

Browsers store web pages in a local cache on the client's machine. How does a hostile Java applet exploit this information to gain more privileges than it is entitled to? My understanding is that a ...
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2answers
917 views

Java SecureRandom generate secure random number

How to generate a secure random number bit length is 256 bits using Java. What is the different between: SecureRandom random = new SecureRandom(); and SecureRandom prng = ...
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1answer
68 views

How esignature verification process work?

I have a web application in which the users will be signing an html report. I know how the digital signature authentication works. But here the user will literally be signing the document (So, Should ...
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2answers
237 views

Security concern to implement a web based remote desktop

I am implementing a web based remote desktop application.Through this application client can connect to the server and can access the server using JSP/Servlet Java robot class. I can configure the ...
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1answer
121 views

Manually monitoring your PC for Java (Oracle) exploits?

Sandboxing and AV's aside, if I wanted to manually look at/monitor my system for where they usually enter it, where could I look for possible malicious Java viruses/activity, e.g., would they first ...
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1answer
104 views

Java TLS1.0 POODLE

Does java implementation affected? https://www.imperialviolet.org/2014/12/08/poodleagain.html
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0answers
29 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 ...
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1answer
66 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. ...
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1answer
66 views

Java org.xmlpull.v1.XmlPullParser and XML External Entity (XXE) Processing Attacks

I'm evaluating the security of an Android application and the application is using the XmlPullParser included with Android. I'm having some difficulty getting any common attacks to work, but I want ...
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1answer
542 views

ShellShock vulnerability and Java Web Applications

I am running a java webapplication ( Spring 3.2 based) on linux hosts. The linux hosts are vulnerable to the ShellShock vulnerability. Can someone exploit this vulnerabiity on my website ?
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32 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 ...
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0answers
48 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 ...
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0answers
182 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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0answers
396 views

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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1answer
218 views

Java Drive By & Stub - Explanation [closed]

I have been trying to make some extensions for chrome lately to block some unwanted stuff. I have also been searching for quite some time to find what a JDB does.So , the applet downloads a file , ...
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1answer
485 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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votes
1answer
221 views

What are correct steps to setup this exploit execution(jboss_invoke_deploy)?

I've found this vulnerability (http://www.metasploit.com/modules/exploit/multi/http/jboss_invoke_deploy) but can't seem to set proper values for exploit to work , payload shown on site gives me worn ...
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0answers
9 views

Java Keystore best practice for large scale application [on hold]

I'm new to JCE/cryptography in general but I'm working on demo where we are going to create a public/private key combination for each users of the site. All the examples I have seen so far stores ...
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1answer
62 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 ...
-1
votes
1answer
78 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 ...
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votes
2answers
514 views

Why don't we have any popular decentralized chat systems, social networks etc.? [closed]

Let's say two computers have the same decentralized chat program. Each user has to have an ip address and port number to send the message to another person. Each message is encrypted using, let's say, ...
-2
votes
1answer
636 views

ESAPI: Input and output validation [closed]

I am new to IT Security and I have been tasked with coming up with input and output validation for ESAPI. So for input validation, so far I got: Data Type Name Email ...
-4
votes
1answer
583 views

Protect java WEB application inside the server(against reverse engineering) [closed]

I have a web application running on Glassfish 3.1.2 servlet container and I need a way to protect the compiled java classes. I have tried to obfuscate the source code but it didn't work. The project ...
-4
votes
1answer
65 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 ...
-4
votes
1answer
1k views

Exploiting tomcat's vulnerability CVE-2009-2693 Arbitrary file deletion and/or alteration on deploy [closed]

For some tests, I want to exploit tomcat 6 vulnerability CVE-2009-2693. You can see it here http://tomcat.apache.org/security-6.html I am trying this with insecure web application of OWASP. I made ...
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1answer
985 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 ...