security aspects specific to the Java programming language and libraries.

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1answer
179 views

Can a Java servlet filter be used to pull out scripts that aren't whitelisted?

I might be asking a similar question to this: Whitelisting DOM elements to defeat XSS But I think my proposed solution is different and I was wondering if I could get the community to comment on ...
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0answers
23 views

Choosing a SSL Certificate Issuer [duplicate]

I am going to buy a new ssl certificate that supports SHA2 algorithm for our web services. Web services will be used by variaous java clients written in java6, java7 and java8. We have got a ssl ...
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0answers
7 views

Ensuring data security using datastore [on hold]

What are some ways to ensure the security of data which is submitted from forms on my site to a Servlet, and then stored in Google's Datastore?
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1answer
57 views

SSL communication between a C# Server and an Android Client App

I'm using a C# server and a C# tcp client example I extracted from the MSDN and I have created a self signed certificate using makecert.exe. I have got this to communicate with one another and it ...
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1answer
200 views

Security Risks of BD+

I have recently been reading about the DRM measures on commercial bluray disks, in particular BD+. It seems that this technology involves Java software running in a virtual machine, with full access ...
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0answers
14 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 ...
3
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2answers
143 views

Secure way to store application settings

What is a proper or, if possible to tell, the best way to store configuration in matters of security? So far I can tell that a database with very restricted access is a good way, but please let's ...
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1answer
35 views

Simple way to secure a webservice used by mobile clients

I am currently working on a RESTful webservice with Java that is used by mobile devices, namely Android and iOS, using a framework that allows me to abstract from both. I'm adding this information ...
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1answer
698 views

Preventing License protection circumvention in Java software

A software (written in Java) by a vendor uses DSA signature to verify that the license information is correct. It achieves this by embedding the public key in the same Java software. Legit license ...
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1answer
46 views

How to prevent browser from rendering malacious content if request or response is hacked

We are currently working on OWASP security fixes and we identified one attack scenario for which we are trying to figure out a possible solution: User hits a valid HTTPRequest to our application. ...
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1answer
43 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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1answer
196 views

Session fixation in Java

In the process of developing a vulnerable jsp/servlet based application I made an attempt to introduce the session fixation vulnerability. Referring to the documentation I came up with the following ...
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1answer
93 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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2answers
70 views

Best way to securely store passwords for local use?

I am writing a Java application who needs three username/password pairs. I would like to add a "remember me" feature, implying I would have to store passwords on the user's computer. Knowing this ...
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3answers
405 views

How to rate Open Source Libraries?

Is there some kind of automated scanning tool which detects threats in Open Source Java Libraries? I think the OWASP Orizon project tried to build such a tool, but it seems to be inactive for years ...
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0answers
27 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 ...
9
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1answer
970 views

Is Java vulnerable to glibc GHOST Vulnerability in Linux?

I see on our RedHat Linux platform that "java" process has dependency over glibc library: [root@hpproliant1 ~]# ldd /usr/bin/java linux-gate.so.1 => (0xffffe000) libpthread.so.0 => ...
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2answers
214 views

Understanding Java Security Providers

I'm hoping to use the below issue we came across recently to better understand Java's security providers, ciphers and encryption in general. We got the following error during an SSL Handshake (using ...
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1answer
59 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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1answer
66 views

Crackstation “Secure Salted Password” Java example - is it really secure?

I'm making an auth service so I've been looking for some good Java/Groovy implementations of password + salt hashing. I've found this article on crackstation along with a code example and decided to ...
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1answer
561 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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2answers
70 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. ...
2
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1answer
75 views

How to run multiple session while scanning application through Burp?

While the scanning the application through Burp, I found that if I use multiple threads it is resulting to session errors like (The requested session id appears to be invalid.You may have more than ...
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2answers
158 views

Overkill or appropriate?

I have come across a web application that a company has asked me to rebuild. After all the implementation is said and done I will deploy on a private server, and the database will be on its own ...
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1answer
148 views

Use openssl key to decrypt file in android/java [closed]

I want to decrypt file encrypted in openssl in java. File is encrypted with private key using openssl and on java side i want to decrypt it using public key. The code: public void testRSA() throws ...
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1answer
77 views

Drive By Download Without User Interaction

Is Exist any kind of drive by download (in Java maybe) without any user interaction, because when you make a drive by download in java in general a popup appears to ask some permission to the user ...
2
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1answer
44 views

Smartcard - main differences between .NET and Java smartcard?

My question focuses on the differences regarding PKCS11 implementation between a .Net and a Java smartcard. More generally, do smartcard use a specific "OS" (or firmware) and only differ in the ...
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0answers
22 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 ...
2
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1answer
925 views

Is keystore file(server.jks), my private key file?

My task is to convert .p7b to .pfx. It would be great, if you could provide me some pointers. Below are the steps I did to generate .p7b file. I generated jks(java keystore) file using below ...
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1answer
74 views

Reflected file download Scenario

I'm making a Java-based web application that is intentionally vulnerable to Reflected File Download (RDF). White paper is here I read the requirements of reflected file download vulnerability as ...
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1answer
61 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 ...
5
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1answer
155 views

Is it more secure to overwrite the value char[] in a String

I am talking about the Java implementation. Is it more secure to use reflection in order to access the internal Field value of type char[] inside a java.lang.String instance and overwrite the ...
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1answer
71 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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1answer
163 views

Java TLS1.0 POODLE

Does java implementation affected? https://www.imperialviolet.org/2014/12/08/poodleagain.html
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2answers
593 views

Are there any real life cases, where using final keyword in Java increases system security?

I've came across that question on StackOverflow: http://stackoverflow.com/questions/18755713/how-does-final-play-a-role-in-security The claim is made, that according to Wikipedia: A final class ...
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2answers
9k 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 ...
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0answers
50 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
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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 ...
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1answer
84 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
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1answer
57 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
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1answer
240 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
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1answer
932 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 ...
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1answer
81 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 ...
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1answer
115 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 ...
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1answer
153 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 ...
2
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1answer
74 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?
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2answers
205 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
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1answer
243 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
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2answers
707 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 ...
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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, ...