jdk8u
tsunami-security-scanner
jdk8u | tsunami-security-scanner | |
---|---|---|
6 | 4 | |
203 | 8,134 | |
2.0% | 0.6% | |
8.5 | 7.5 | |
13 days ago | 22 days ago | |
Java | Java | |
GNU General Public License v3.0 only | 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.
jdk8u
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Seeing through hardware counters: a journey to threefold performance increase
Would an atomic mutable subclass cache (not sure what it's used for, downcasting?) be unnecessary in a language built around static rather than dynamic dispatch by default, like C/C++/Rust and perhaps Go? Or would it still speed up dynamically dispatched code, but is less practical or worthwhile so it isn't used in practice? (Though Rust's Arc also suffers from atomic contention similar to this blog post, when used across dozens of threads: https://pkolaczk.github.io/server-slower-than-a-laptop/)
Also it's somewhat ironic that the JVM source code (https://github.com/openjdk/jdk8u/blob/jdk8u352-b07/hotspot/s...) says "This code is rarely used, so simplicity is a virtue here" at the site of a bottleneck.
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Minecraft 1.8.9 Consistently Crashes after 5 Mins
Use the latest JDK (Developer's Kit) or JRE (Runtime Environment) for Java 8, compiled and distributed by AdoptOpenJDK from the official Read-Only source.
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How are LTS updates made?
The majority of the work on 8u, 11u, 17u releases happens in OpenJDK upstream, in so called JDK Updates Projects, by engineers from the interested JDK vendors. You can get a peek who does this kind of work from the repository histories, for example the most recent 11.0.13 is done by engineers from Red Hat (including yours truly), SAP, Azul, Microsoft, BellSoft, Tencent, Amazon, Alibaba, IBM, ARM, Google.
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Log4Shell Log4j vulnerability (CVE-2021-44228) – cheat-sheet reference guide
> whatever it returned would just get inserted as a string into the log output, no big deal.
Once you can inject anything that gets resolved, you have an information disclosure vulnerability unrelated to the RCE.
If I can just DNS resolve any ${env} variable from the JVM, a lot of systems are compromised by just exposing the env or system variables configured for runtime.
Just getting your $AWS_ACCESS_KEY_ID and $AWS_SECRET_ACCESS_KEY env vars can compromise your bucket (sure, that is a really unsafe setup now, but it was almost the standard a few years ago over configuring it explicitly).
So a logging system which will merely resolve a hostname derived from a variable was bad enough to compromise many systems.
The serialization loophole was fixed in a jdk8 update.
https://github.com/openjdk/jdk8u/commit/006e84fc77a582552e71...
But even with that in place, the information disclosure of java System or env properties is bad enough to break actual systems in prod.
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Log4j RCE Found
> Turns out, by including "." in some part of the URL to this remote class, Log4j lets off its guard & simply looks up to that server and dynamically loads the class file.
No it doesn't. That was disabled by default in 2009, and was disabled by default in every release of Java 8 or later: https://github.com/openjdk/jdk8u/commit/006e84fc77a582552e71...
Unless i am mistaken, i don't believe the attack as described by LunaSec actually works against a default-configured JVM released any time in the last decade.
tsunami-security-scanner
- Qualys Community Edition for vuln. scanning?... limitations?
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Log4j RCE Found
https://github.com/google/tsunami-security-scanner (I bet it would be easy to write a plugin for https://github.com/projectdiscovery/nuclei as well.)
To see if there are injection points statically, I work on a tool (https://github.com/returntocorp/semgrep) that someone else already wrote a check with: https://twitter.com/lapt0r/status/1469096944047779845 or look for the mitigation with `semgrep -e '$LOGGER.formatMsgNoLookups(true)' --lang java`. For the mitigation, the string should be unique enough that just ripgrep works well too.
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Security and self-hosting, bumping a 7 months old thread
Thanks to you I just reenabled Tsunami https://github.com/google/tsunami-security-scanner. Also had software called something like vuln (blue logo with a yellow eye in the middle) running. but the hard disk of the server died --sadly and I can't remember how it was called.-- https://vuls.io/
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Awesome Penetration Testing
Tsunami - General purpose network security scanner with an extensible plugin system for detecting high severity vulnerabilities with high confidence.
What are some alternatives?
jdk8u_jdk
logging-log4j1 - Apache log4j1
apache-log4j-poc - Apache Log4j 远程代码执行
awesome-pcaptools - A collection of tools developed by other researchers in the Computer Science area to process network traces. All the right reserved for the original authors.
syft - CLI tool and library for generating a Software Bill of Materials from container images and filesystems
docker-gvm - Docker container stack for GVM / OpenVAS
openjdk8-upstream-binaries - Archived release scripts/releases of OpenJDK 8u project builds. Superseded by Eclipse Temurin releases.
scapy - Scapy: the Python-based interactive packet manipulation program & library.
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/
go-cache - An in-memory key:value store/cache (similar to Memcached) library for Go, suitable for single-machine applications.
marshalsec
ZAP - The ZAP core project