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Oracle Linux 8 — dovecot — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — dovecot — vulnerability — patch and remediation guide (ELSA-2020-4763)

🟡 Medium   ⏱ 10–30 min  Last verified: 21 February 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-4763 Related CVEs: CVE-2020-10958 CVE-2020-10967 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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openSUSE Tumbleweed — perl-Module-Signature — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — perl-Module-Signature — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2015-3406 CVE-2015-3407 CVE-2015-3408 CVE-2015-3409 CVE-2013-2145 Upstream summary: The PGP signature parsing in Module::Signature before 0.74 allows remote attackers to cause the unsigned portion of a […]

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How To Install ISPConfig3 on an Ubuntu 14.04 Server — step-by-step Linux tutorial on Progressive Robot

How To Install ISPConfig3 on an Ubuntu 14.04 Server

ISPConfig3 is a control panel that can be used to manage accounts, domains, email addresses and more. It is often used to help administers configure server shares for users. In this guide, we’ll cover how to install it on an Ubuntu 14.04 server.

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openSUSE Tumbleweed — libkde4 — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — libkde4 — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2014-3494 Upstream summary: kio/usernotificationhandler.cpp in the POP3 kioslave in kdelibs 4.10.95 before 4.13.3 does not properly generate warning notifications, which allows man-in-the-middle attackers to obtain […]

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How to Back Up a LAMP Server with Bacula on Ubuntu 14.04 — step-by-step Linux tutorial on Progressive Robot

How to Back Up a LAMP Server with Bacula on Ubuntu 14.04

After getting your application server up and running, an important next step is to set up a backup system. A backup system will allow you to create periodic backup copies of your data, and restore data from those backups. This tutorial will show you how to create proper backups of a PHP application, running on a single server LAMP stack, by using a separate backups server that is running Bacula.

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Apache Spark Example: Word Count Program in Java — step-by-step Web Servers tutorial on Progressive Robot

Apache Spark Example: Word Count Program in Java

Apache Spark Apache Spark is an open source data processing framework which can perform analytic operations on Big Data in a distributed environment. It was an academic project in UC Berkley and was initially started by Matei Zaharia at UC Berkeley’s AMPLab in 2009. Apache Spark was created on top of a cluster management tool […]

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Common Problems 121056

Debian 10 Boot Stalls on Emergency Mode

🔴 Critical   ⏱ 5–30 min  Last verified: 20 February 2020 Affected versions: Debian 10 📖 ~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 & […]

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FreeBSD 12 — squid-devel — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — squid-devel — multiple vulnerabilities (8 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 20 February 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: squid — Vulnerable to Denial of Service attack Related CVEs: CVE-2016-10002 CVE-2016-10003 CVE-2016-4553 CVE-2016-4554 CVE-2016-4555 CVE-2016-4556 CVE-2018-1000024 CVE-2018-1000027 Upstream summary: Louis Dion-Marcil reports: Due to incorrect pointer handling Squid is […]

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How to Configure auditd on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Configure auditd on FreeBSD 12

Introduction This guide explains how to Configure auditd 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 fine-grained privilege separation. […]

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