jdk8u
nuclei-templates
jdk8u | nuclei-templates | |
---|---|---|
6 | 13 | |
201 | 8,057 | |
1.0% | 1.8% | |
8.5 | 10.0 | |
17 days ago | 5 days ago | |
Java | JavaScript | |
GNU General Public License v3.0 only | MIT License |
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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.
nuclei-templates
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Script kiddie tools preferred by the hackers of this channel?
Check https://github.com/projectdiscovery/nuclei mostly for CVEs.
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Link CVE to installed applications?
Otherwise your on the right path checkout the open source Greenbones OpenVAS (this was Nessus before they closed source and became corporate) or Project Discovery Nuclei
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Attack simulation tool based on CVE
Nmap can run scripts that trigger NIPS, as does Nuclei. https://nmap.org/ & https://github.com/projectdiscovery/nuclei you can look at a list of vuln scanners here. https://owasp.org/www-community/Vulnerability_Scanning_Tools. Nessus would be a common one to look at for Enterprise. Rapid 7, Qualys.
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XSS vulnerabilities discovered in ServiceNow - CVE-2022-38463
I created a nuclei template and scanned the bug bounty programs with nuclei and found that many companies were vulnerable to this.
- Are there any good automated attack tools besides Pentera?
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Free vulnerability scanners
Nuclei might be a good option: https://github.com/projectdiscovery/nuclei
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Spring4Shell: An Application Vulnerable to RCE
Recently one of the security researchers has built a Nuclei Template to Detect Spring4Shell, This template can be easily run to scan for Spring4Shell on your Networking, routing, or security devices inside your network. Template Link: https://github.com/projectdiscovery/nuclei-templates/blob/master/cves/2022/CVE-2022-22965.yaml
- GitHub - projectdiscovery/nuclei: Fast and customizable vulnerability scanner based on simple YAML based DSL.
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Almost every publicly available CVE PoC
For a curated collection of CVE PoCs that is continuously updated by the bug bounty community, check out the projectdiscovery nuclei repo: https://github.com/projectdiscovery/nuclei-templates/tree/ma...
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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.
What are some alternatives?
jdk8u_jdk
PayloadsAllTheThings - A list of useful payloads and bypass for Web Application Security and Pentest/CTF
apache-log4j-poc - Apache Log4j 远程代码执行
Awesome-Bugbounty-Writeups - A curated list of bugbounty writeups (Bug type wise) , inspired from https://github.com/ngalongc/bug-bounty-reference
syft - CLI tool and library for generating a Software Bill of Materials from container images and filesystems
Apache Log4j 2 - Apache Log4j 2 is a versatile, feature-rich, efficient logging API and backend for Java.
openjdk8-upstream-binaries - Archived release scripts/releases of OpenJDK 8u project builds. Superseded by Eclipse Temurin releases.
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/
Nuclei-Template-CVE-2022-1388-BIG-IP-iControl-REST-Exposed - This vulnerability may allow an unauthenticated attacker with network access to the BIG-IP system through the management port and/or self IP addresses to execute arbitrary system commands, create or delete files, or disable services. There is no data plane exposure; this is a control plane issue only.
marshalsec
Spring4Shell-POC - This is a dockerized application that is vulnerable to the Spring4Shell vulnerability (CVE-2022-22965).