Logging Monitoring

Ubuntu 16.04 — pacemaker — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — pacemaker — multiple vulnerabilities (6 CVEs) — patch and remediation guide

  • April 23, 2021
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 23 April 2021 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4623-1 Related CVEs: CVE-2020-25654 CVE-2018-16877 CVE-2018-16878 CVE-2019-3885 CVE-2016-7035 CVE-2016-7797 Upstream summary: Ken Gaillot discovered that Pacemaker incorrectly handled IPC communications permissions. A local attacker could possibly use this issue to […]

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Debian 10 — coturn — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — coturn — multiple vulnerabilities (2 CVEs) — patch and remediation guide

  • April 23, 2021
  • Linux
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🟢 Low   ⏱ 5–15 min  Last verified: 23 April 2021 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-26262 CVE-2020-4067 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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How to Install Zabbix on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Install Zabbix on RHEL 7

  • April 23, 2021
  • Linux
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How to Install Zabbix on RHEL 7 Zabbix is a mature, enterprise-grade open-source monitoring platform that supports agent-based and agentless monitoring of servers, network devices, applications, and cloud resources. It combines metrics collection, event correlation, alerting, and visualisation in a single self-hosted solution — making it a compelling choice for organisations that need full control […]

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Gentoo Linux — dev-ada/gnat-suite-bin — vulnerability — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — dev-ada/gnat-suite-bin — vulnerability — patch and remediation guide

  • April 23, 2021
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202402-04 Related CVEs: CVE-2020-27619 Upstream summary: A vulnerability has been discovered in GNAT Ada Suite. Please review the CVE identifier referenced below for details. Table of contents Symptom & Impact Environment & […]

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How to Set Up TimescaleDB on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Set Up TimescaleDB on Oracle Linux 8

Introduction Setting up set up timescaledb on oracle linux 8 on a Oracle Linux 8 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Set Up TimescaleDB on Oracle Linux 8, with all the commands you need, the SELinux and firewalld considerations to keep in […]

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Oracle Linux 8 — java-17-openjdk — security and stability fixes — required update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — java-17-openjdk — security and stability fixes — required update (ELSA-2022-7000)

  • April 22, 2021
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 22 April 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-7000 Related CVEs: CVE-2022-21618 CVE-2022-21624 CVE-2022-21626 CVE-2022-21628 CVE-2022-21619 CVE-2022-39399 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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AlmaLinux 8 — efivar — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — efivar — vulnerability — patch and remediation guide

  • April 22, 2021
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALEA-2020:4596 Upstream summary: For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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AlmaLinux 8 — postfix — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — postfix — vulnerability — patch and remediation guide

  • April 22, 2021
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALBA-2022:2091 Upstream summary: For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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FreeBSD 13 — libsrtp — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — libsrtp — vulnerability — patch and remediation guide

  • April 22, 2021
  • BSD
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🟢 Low   ⏱ 5–15 min  Last verified: 22 April 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: libsrtp — DoS via crafted RTP header vulnerability Related CVEs: CVE-2015-6360 Upstream summary: libsrtp reports: Prevent potential DoS attack due to lack of bounds checking on RTP header CSRC count […]

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FreeBSD 13 — openvpn-polarssl — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — openvpn-polarssl — multiple vulnerabilities (8 CVEs) — patch and remediation guide

  • April 22, 2021
  • BSD
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🟡 Medium   ⏱ 10–30 min  Last verified: 22 April 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: OpenVPN — out-of-bounds write in legacy key-method 1 Related CVEs: CVE-2017-12166 CVE-2017-7478 CVE-2017-7479 CVE-2017-7508 CVE-2017-7512 CVE-2017-7520 CVE-2017-7521 CVE-2017-7522 Upstream summary: Steffan Karger reports: The bounds check in read_key() was performed […]

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AIX AlmaLinux Alpine Linux authentication authorization Backup Recovery Boot Startup Cloud Integration Common Problems Cpu Memory Database Debian Debian 11 Debian 12 Bookworm Debian 13 Trixie DNS Firewall Fix Prevention FreeBSD FreeBSD 12 FreeBSD 13 FreeBSD 14 FreeBSD 15 Kernel Drivers Logging Monitoring Lvm Raid NetBSD Networking openSUSE Operations Oracle Linux Oracle Linux 8 Oracle Linux 9 Package Management Performance Proxy Security Hardening SLES Storage Disk Systemd Services Tls Ssl Troubleshooting ubuntu VPN windows server
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