🔴 Critical ⏱ 5–30 min Last verified: 30 May 2026 Affected versions: Windows Server 2022 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution — Primary Fix Solution — Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors […]
URL: https://www.progressiverobot.com/java-lang-noclassdeffounderror/ java.lang.NoClassDefFoundError is runtime error thrown when a required class is not found in the classpath and hence JVM is unable to load it into memory. java.lang.NoClassDefFoundError NoClassDefFoundError is a runtime error, so it's beyond our application scope to anticipate and recover from this. java.lang.NoClassDefFoundError is a runtime error, it never comes in compile […]
🟢 Low ⏱ 5–15 min Last verified: 25 May 2026 Affected versions: FreeBSD 13 📖 ~4 min read • Source: FreeBSD VuXML VuXML topic: Slixmpp — Lack of SSL Certificate hostname validation in XMLStream Related CVEs: CVE-2022-45197 Upstream summary: NIST reports: Slixmpp before 1.8.3 lacks SSL Certificate hostname validation in XMLStream, allowing an attacker […]
Introduction This guide explains how to Configure pfsync Firewall State Synchronization on FreeBSD 12 on FreeBSD 12. FreeBSD uses the pkg(8) binary package manager, rc.conf(5) for service startup configuration, and pf(4) as its primary packet filter. There is no SELinux or AppArmor — instead, FreeBSD provides the MAC (Mandatory Access Control) framework and Capsicum for […]
🟠 High ⏱ 15–60 min Last verified: 25 May 2026 Affected versions: SLES 15 📖 ~4 min read • Source: SUSE advisory SUSE-CU-2023:796-1 (see also SUSE bugzilla) Related CVEs: CVE-2022-3650 CVE-2022-0670 CVE-2022-3854 CVE-2021-3979 Upstream summary: A privilege escalation flaw was found in Ceph. Ceph-crash.service allows a local attacker to escalate privileges to root in […]
URL: https://www.progressiverobot.com/java-heap-space-vs-stack-memory/ Sometime back we wrote a couple of posts about [Java Garbage Collection](/community/tutorials/java-jvm-memory-model-memory-management-in-java) and [Java is Pass by Value](/community/tutorials/java-is-pass-by-value-and-not-pass-by-reference "Java is Pass by Value and Not Pass by Reference"). After that we got a lot of emails to explain about Java Heap Space, Java Stack Memory, Memory Allocation in Java and what are the […]
🟠 High ⏱ 15–60 min Last verified: 25 May 2026 Affected versions: Oracle Linux 9 📖 ~4 min read • Source: ELSA advisory ELSA-2024-0461 Related CVEs: CVE-2023-2166 CVE-2023-5633 CVE-2023-3777 CVE-2023-6679 CVE-2023-46813 CVE-2023-4622 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]
In this the cloud provider article, we are going to learn how to prepare an Ubuntu cloud server from scratch to host Python web-applications. By following this tutorial, you will have a solid Ubuntu installation, equipped with almost all necessary tools to deploy your Python project.
A Linux container is a grouping of processes that is isolated from the rest of the system through the use of Linux kernel security features, such as namespaces and control groups. LXD lets you create and manage these containers. In this tutorial, you’ll configure LXD and use it to run Nginx in a container. You’ll then route traffic to the container in order to make the web site accessible from the Internet.
🟠 High ⏱ 15–60 min Last verified: 25 May 2026 Affected versions: Oracle Linux 8 📖 ~4 min read • Source: ELSA advisory ELSA-2022-10078 Related CVEs: CVE-2022-4378 CVE-2022-1184 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & […]
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