marshalsec
Apache Log4j 2
| marshalsec | Apache Log4j 2 | |
|---|---|---|
| 7 | 108 | |
| 3,211 | 3,273 | |
| - | 0.4% | |
| 0.0 | 9.9 | |
| over 1 year ago | 3 days ago | |
| Java | Java | |
| MIT License | Apache License 2.0 |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
marshalsec
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How do I construct a curl command for a log4shell ldap server?
I'm using this: https://github.com/mbechler/marshalsec as an LDAP server.
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A Study Notes of Exploit Spring Boot Actuator
According to the introduction in https://github.com/mbechler/marshalsec/blob/master/marshalsec.pdf, in addition to the javax.script.ScriptEngineManager class , we can also use the com.sun.rowset.JdbcRowSetImplclass to complete the exploitation through JNDI injection. The payload is as follows
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Log4Shell log4j vulnerability (CVE-2021-44228) - cheat-sheet reference guide
Not sure if that method actually works since LDAP is a different protocol than HTTP? If you're running an HTTP server as the receiver, then your server is just going to be confused by the connection and it might not log anything. You either want to run an LDAP server like https://github.com/mbechler/marshalsec , or have some logging method that triggers on any TCP connection, or use a service like dnslog.cn that can log for you. (although I've seen a lot of companies are now specifically blocking that domain which seems silly).
- GitHub taking down tools allowing defenders to reproduce the Log4j vulnerability
- WTH
- Java Unmarshaller Security – Turning your data into code execution
- Log4j RCE Found
Apache Log4j 2
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Hackers exploited Windows 0-day for 6 months after Microsoft knew of it
I don't think that's a good example. While Apache devs are volunteers and Microsoft devs are employees, they were criticized for their slow response time and seeming lack of urgency until it was far too late.
https://github.com/apache/logging-log4j2/pull/608#issuecomme...
- Create an alternative async logger implementation using JCTools
- Log4j requesting feedback on which modules/features to drop
- The Unsung Heroes of Open Source: The Dedicated Maintainers Behind Lesser-Known Projects
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Studying Log4Shell
The official website. The vulnerability was introduced in 2.0-beta7 which was released in 2013.
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The Dedicated Maintainers Behind Lesser-Known Open Source Projects
However, there are many open source projects that are widely used but not well-known, including cURL, ImageMagick, MyCLI, Homebrew, Apache Log4j, and OpenSSL. This article will take a closer look at these unsung heroes of the open source world. I do not want to give them a business model or financial advice in this article. This largely depends on the author's personal experience and values. I just want to raise more awareness about these open source projects.
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Apache POI Setup Logging Error
What you need is log4j-core, what you downloaded is some kind of connector between log4j and JUL. Tbh I don't know what JUL is, but that's not important. You can get log4j-core on from the official website - https://logging.apache.org/log4j/2.x/ or in maven repo. In case you're not using maven, I highly, highly recommend you using it for managing your dependencies.
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Log4Shell Still Has Sting in the Tail
> When it was first revealed in early December 2021, the Log4Shell bug was described as one of the most severe security vulnerabilities ever.
> The Apache Software Foundation, which maintains the open-source tool, quickly released a patch...
Apache horribly mismanaged this and did not release a patch until it was already widely known and being exploited in the wild. They also messed up and had to release several subsequent patches to actually fix the vulnerability.
Remember: this vulnerability was disclosed to them in November.
https://github.com/apache/logging-log4j2/pull/608#issuecomme...
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The US Cybersecurity and Infrastructure Agency open-sourced a new tool named Scuba
Think back to the Log4J event, were you affected? (https://github.com/apache/logging-log4j2)
- In One Minute : log4j2
What are some alternatives?
Java-Deserialization-Cheat-Sheet - The cheat sheet about Java Deserialization vulnerabilities
Logback - The reliable, generic, fast and flexible logging framework for Java.
JNDIExploit - 一款用于JNDI注入利用的工具，大量参考/引用了Rogue JNDI项目的代码，支持直接植入内存shell，并集成了常见的bypass 高版本JDK的方式，适用于与自动化工具配合使用。
reload4j - reload4j is a drop-in replacement for log4j 1.2.17
jdk8u - https://wiki.openjdk.org/display/jdk8u
tinylog - tinylog is a lightweight logging framework for Java, Kotlin, Scala, and Android
logging-log4j1 - Apache log4j1
Logstash - Logstash - transport and process your logs, events, or other data
lunasec - LunaSec - Dependency Security Scanner that automatically notifies you about vulnerabilities like Log4Shell or node-ipc in your Pull Requests and Builds. Protect yourself in 30 seconds with the LunaTrace GitHub App: https://github.com/marketplace/lunatrace-by-lunasec/
SLF4J - Simple Logging Facade for Java
rogue-jndi - A malicious LDAP server for JNDI injection attacks
kibana - Your window into the Elastic Stack