Skip to main content
Share Your Experience: Take the 2024 Developer Survey

Questions tagged [java]

Security aspects specific to the Java programming language, libraries, and virtual machine.

Filter by
Sorted by
Tagged with
1 vote
0 answers
68 views

Trying to reproduce Log4J vulnerability

I'm trying to reproduce log4j vulnerability on my spring-boot java project. I know that version from 2.0 to 2.14.1 are vulnerable, i'm using the 2.14.1 version but but i'm not able to exploit it, ...
yeppa's user avatar
  • 11
0 votes
0 answers
27 views

how to alter a value in RMI TLS communication

I am pentesting a java thick client application, and the communication between client and server is RMI over TLS. On a certain button, there is an action triggered from the client to the server. In ...
anonymous's user avatar
0 votes
0 answers
26 views

Which groovy is safe from gadget chains?

I have a java deserialization vulnerability, with a poc. The poc exploits using the groovy library, and the groovy version is 2.4.19. When searching online for a CVE related to this gadget I couldn't ...
anonymous's user avatar
0 votes
0 answers
74 views

Should Maven Central artifacts containing known vulnerable artifacts be reported?

I have developed a tool that can find Maven Central JAR artifacts that contain classes from known vulnerable JAR artifacts. This includes but is not limited to fat (uber) JARs, JAR bundles, and ...
Cornul11's user avatar
  • 113
1 vote
0 answers
96 views

Google Login with idToken and JWT (Java)

We are integrating Google login in our app and we intend to use the idToken for authentication. We are already sending the idToken from the app to the back-end server, and intend to verify the token ...
Lucas Basquerotto's user avatar
5 votes
2 answers
669 views

Format string vulnerability in Java?

Can a non-sanitized user input result in a vulnerability if passed to System.out.printf (Or any equivalent function that takes a format)? Example: public class Demo { public static void main(...
M0ngi's user avatar
  • 53
0 votes
1 answer
103 views

Is ZipSlip possible in Java without two dots?

I'm testing a Java application that tries to prevent ZipSlip by simply checking whether the filename contains ".." or "./" Since it's not a web application, I guess encoding is not ...
Lucius's user avatar
  • 121
0 votes
0 answers
101 views

How to limit access to JMX to just a few IP-addresses?

I'm dealing with a vendor-provided application, which has multiple components running on separate computers. The components communicate with each other using (unsecured) JMX -- which means, anybody ...
Mikhail T.'s user avatar
0 votes
1 answer
1k views

Doing a diff between two keystore files

I have a keystore file with certificates and I want to compare if the second keystore has exactly the same contents as the first one. One approach would be to extract the certificates using keytool ...
Jim's user avatar
  • 183
0 votes
2 answers
159 views

Post Exploitation in Oracle web logic server 10.35 (Oracle Linux Server 3.8)

Web Server : Oracle WebLogic 10.35 Machine : Oracle Linux Server 3.8 I was able to partially exploit this CVE. I can execute any command on server using HTTP request and redirecting its output to a ...
Abu Bakar's user avatar
0 votes
2 answers
791 views

LFI to RCE in java EE Application

I found vulnerable end-points in my university's old portal. It should not be accessible but I found it somehow. -> First end-point allows me to upload any kind of file on following path : /home/...
Abu Bakar's user avatar
0 votes
1 answer
300 views

With Response header having content-type: application/json, is it still possible to trigger XSS?

The application is responding using the user supplied request but the content type is set as application/json. Is it possible to trigger still XSS? This is a language neutral question, it can be Java,...
warrior-oo7's user avatar
1 vote
2 answers
471 views

Coverity flags as unsafe deserialisaton. Is this vulnerable?

Coverity shows the block of code as unsafe deserialization: String str = OBJECT_MAPPER.writeValueAsString(body); //Body is user controlled Ferarri myclassobj = OBJECT_MAPPER.readValue(str, Ferarri....
warrior-oo7's user avatar
0 votes
1 answer
151 views

SecureRandom safety?

I need to randomly pick 10 numbers from 1 to 2000. It is very important that this rng cannot be predicted/hacked in any way. Would this be a safe/proper way to do it: int randomInt; SecureRandom ...
Cannon 190's user avatar
1 vote
1 answer
178 views

Java Cryptography classes - program agnostic usage

We are planning on implementing encryption or digital signatures using any of the available classes provided by the Java Cryptography Architecture (e.g. KeyPair, MessageDigest, Cipher, KeyStore, ...
StephenG's user avatar
0 votes
0 answers
75 views

Is there any stable Java library to perform the same set of operations on USB tokens as javax.smartcadio does?

I need to perform a public/private key generation on USB devices and store private key parts on at least 3 USB tokens. Java javax.smartcardio allows to perform such an operation on Smart-cards that I ...
ojacomarket's user avatar
0 votes
1 answer
176 views

Information leakage from a API 404 response

Our consulting company has received a VAPT from a consulting company on behalf of a financial customer. The application has an HR/group management module. Normally employees are created by an ...
usr-local-ΕΨΗΕΛΩΝ's user avatar
1 vote
0 answers
1k views

Disabling weak cipher suites in Tomcat does not work as expected

I have to get rid of so called "weak security" in a Tomcat application. A penetration test identified services that accept connections with insecure TLS encryption and hashing algorithms: ...
MichaelW's user avatar
  • 161
1 vote
1 answer
487 views

Jsoup XSS attack with URL encoded input

I'm having a Spring Web Application that exposes REST APIs. I have implemented XSS filter using Jsoup that strips the input using Safelist.NONE. The penetration testing team raised a concern where the ...
Yuval Simhon's user avatar
1 vote
1 answer
101 views

Is there a way someone can read arrays of bytes which I send with java sockets while using TLS 1.2?

If anyone can answer me pls I just need an anwer. I know thus isn't maybe right place for this question I created chatting app with sockets in Java 8 and i use TLS 1.2 My question is: Is there any way ...
GM dz0ji's user avatar
1 vote
1 answer
1k views

Is DPAPI still valid option to protect eg. encryption key?

I have an Java client program for Windows having a properties file that I need to be able to encrypt (protect it if a malicious user accesses the server and properties file) but the client program of ...
Jokkeri's user avatar
  • 113
1 vote
0 answers
531 views

Given a Java ECPublicKey ECDSA PublicKey, how can I build an SSH2 public key? [closed]

I have created a ECDSA key and now need to convert this to SSH2 key. final KeyPairGenerator keyGen = KeyPairGenerator.getInstance("ECDSA"); ECGenParameterSpec params = new ...
Vicky's user avatar
  • 11
1 vote
0 answers
714 views

Why is there no fix for the commons beanutils Java deserialization gadget?

I recently came across a vulnerability which was caused by unsafe deserialization (Java) and the use of the Apache Commons library commons-beanutils. The ysoserial project references commons-beanutils ...
kaidentity's user avatar
  • 2,654
0 votes
0 answers
421 views

how to know CVE affects which Jar/artifact?

When I'm trying to analyze CVEs to detect which jars are affected by the CVE, I getting confused. Let's take as an example this CVE: CVE-2022-22978 In the description: "In Spring Security ...
ethicalhacker's user avatar
0 votes
2 answers
885 views

Is TLS version related to the server in a Java thick client application?

In a recent pentest (Java thick client), it was discovered by the pentesters that TLS version 1.3 is not supported. I'm investigating why it is not supported, so I was looking in the Java code for ...
ethicalhacker's user avatar
2 votes
1 answer
147 views

Defining scope of a software pen test

If I own a software and I want to conduct a pen test with pen testers, should I define the scope or do the pen testers assess the software first and they define the scope? How does scope definition ...
ethicalhacker's user avatar
2 votes
2 answers
596 views

Java support for TLS_DHE_RSA_WITH_AES_128_CCM

My test tool uses java and I need it to use TLS_DHE_RSA_WITH_AES_128_CCM. Does standard java (Oracle) support CCM cipher suites? I am seeing oracle links mentioning CCM but am not able to make it work....
Amal Jesudas's user avatar
-1 votes
1 answer
320 views

Modifying cacerts at runtime

I have an containerized JVM application (multiple actually) running on kubernetes, which needs to trust additional custom/private CAs (which are not known beforehand, the application will be deployed ...
ciis0's user avatar
  • 101
1 vote
2 answers
649 views

Java XXE vulnerability

If I am already using xmlInputFactory.setProperty(XMLInputFactory.SUPPORT_DTD, false); then do I also need to use xmlInputFactory.setProperty("javax.xml.stream.isSupportingExternalEntities",...
Rupesh Pal's user avatar
3 votes
0 answers
1k views

How to Securely Store Database Password in Java .properties File

I would like to store my DB password in Java .property file and encrypt it using Jasypt. But from what I see, it just moves the problem from hiding the DB Password to hiding the encryption password. I ...
Waristea's user avatar
17 votes
2 answers
3k views

How are code-branch side channel attacks mitigated on Java?

When you are working with secret keys, if your code branches unequally it could reveal bits of the secret keys via side channels. So for some algorithms it should branch uniformly independently of the ...
Guerlando OCs's user avatar
0 votes
1 answer
424 views

What to do if my java app is still vulnerable to log4shell after upgrading to the latest log4J?

My Java 11 application is being upgraded to fix the log4shell flaw. So first Spring Boot has been upgraded to the latest version. As my project uses Maven to manage its dependencies, I set the log4j ...
HelloWorld's user avatar
0 votes
1 answer
252 views

How do different secret-key algorithms generate the same data?

How do different secret-key algorithms generate the same data? In the snippet below, I use PBEWithMD5AndDES to produce one key, and PBEWithHmacSHA256AndAES_256 to produce another key, but with the ...
keian's user avatar
  • 103
1 vote
0 answers
219 views

Insufficient SSL certificate pinning in an native Android app

I have implemented Certificate Pinning in a prototype of an android app. Here are the steps I followed: Converted .crt file to .bks file Added the .bks file to the asset folder in project structure ...
Sangamesh T's user avatar
0 votes
1 answer
550 views

Openssl and Let's Encrypt Cert Chain

I'm trying to understand openssl and some cert issues I was trying to track down. These certs were issued from Let's Encrypt. I will use their site as an example because I see the same behavior there. ...
AnaphylacticInternet's user avatar
0 votes
1 answer
2k views

Does alias in a truststore matter?

I was trying to add a new certificate to our truststore. But I got the alias already exists error. I can't remove the old certificate yet, but I have to add the new certificate. Will it matter if I ...
ssl_noob's user avatar
0 votes
1 answer
462 views

How do I test for Reflected XSS in webpage titles, url parameters and javascript variables?

I have a java web app. I'm using OWASP Java Encoder to encode for html, javascript and url components to mitigate reflected XSS. I'm new to this so I'm not sure on how to test on my web app for the ...
HunterTheox24's user avatar
0 votes
0 answers
86 views

Third Party Java 8 Program Running in Java 11 vs Java 8?

If a vendor provides you with a program written for Java 8, is there any security advantage of running that program in the latest OpenJDK build of Java 11 instead of the latest OpenJDK build of Java 8?...
Shawn Eary's user avatar
33 votes
3 answers
21k views

Am I protected from Log4j vulnerability if I run Java 8u121 or newer?

According to the notes for CVE-2021-44228 at mitre.org: Java 8u121 (see https://www.oracle.com/java/technologies/javase/8u121-relnotes.html) protects against remote code execution by defaulting "...
Appleoddity's user avatar
3 votes
1 answer
1k views

How to validate if Log4Shell patch is applied?

Is it enough to upgrade log4j-core and log4j-api to 2.15.0 but leave log4j-slf4j-impl, which is a binding library, to 2.14.1, given that mvn dependency:tree suggests that log4j-slf4j-impl:2.14.1 is ...
53c's user avatar
  • 133
4 votes
1 answer
439 views

Does the log4j RCE vulnerability run even if the message is just a part of the logged string?

Does the JNDI URL need to be the full string being logged or could it be just a part of a logged string? For example, if the code contains: paramGivenFromOutside = "${jndi:ldap://maliciousServer:...
Lefteris E's user avatar
0 votes
1 answer
6k views

CheckMarx SSRF Vulnerability

I have a REST which takes a parameter dataSource as input and myService has follow logic. @RequestMapping(value ="/save", method = RequestMethod.POST) public List<String> find(@...
Artem Fedin's user avatar
2 votes
0 answers
472 views

Does Java cache intermediate certificates fetched via AIA?

Java supports AIA chasing via the system property com.sun.security.enableAIAcaIssuers (which is disabled per default). There is some documentation available but it is pretty slim regarding details. I ...
mss's user avatar
  • 131
0 votes
1 answer
286 views

How to encrypt REST body with openid connect OIDC

The big picture is: an android application which authenticate user with an external openid provider (such as azure AD) a Java EE server which expose rest endpoints securized with the validation of ...
Francesco Clementi's user avatar
1 vote
1 answer
269 views

Generate key pair and entropy

I would like to use the method described in https://connect2id.com/products/nimbus-jose-jwt/examples/jwk-generation to generate a key pair in a java application: import java.util.*; import com....
Marco Altieri's user avatar
0 votes
0 answers
124 views

SSL newbie - in which scenario a client needs a certificate?

I am new to SSL/TLS, and need some help with understanding. I am running a java application, which is able to consume HTTP and HTTPS URLs as a client from the internet via httpClient. For that, I don'...
Galadriel's user avatar
2 votes
3 answers
527 views

About vulnerability in the dependency

I have read many articles about the vulnerability in the program dependency, either direct or transitive. Here are two questions come out of my mind. If a dependency A has a vulnerability (Maybe has ...
LGDGODV's user avatar
  • 173
0 votes
1 answer
234 views

Unrestricted file write in Java

Would it be possible to write a file to a directory outside of the uploads folder if the $ext variable is used controlled and unrestricted? The uploads directory is empty except for the freshly ...
Fred's user avatar
  • 1
4 votes
2 answers
2k views

Semicolon's relation with reverse proxy

What is the relation of semicolon with reverse proxy and how is it able to escape context/servlet mapping in reverse proxies such as IIS, NGINX, Apache? Like I've seen multiple times where people have ...
James's user avatar
  • 43
1 vote
1 answer
3k views

Can I get AES CBC key from known plaintext, ciphertext, iv? [duplicate]

Long story short: I was using AES CBC PKCS5 on my image server, but I lost my keys (one key per image). I know the first 61 bytes (the original and the encrypted) of each image plus I know the IV, and ...
Mk Domain's user avatar

1
2 3 4 5
15