Logging Monitoring

Amazon Linux 2 — evince — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — evince — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2-2020-1511 Related CVEs: CVE-2019-14494 CVE-2019-11459 Upstream summary: A divide-by-zero error was found in the way Poppler handled certain PDF files. A remote attacker could exploit this flaw by providing a […]

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

FreeBSD 12 — openvpn-polarssl — multiple vulnerabilities (8 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 6 June 2019 Affected versions: FreeBSD 12 📖 ~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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How to Configure Hyper-V Virtual Networking on Windows Server 2019 — step-by-step Windows Server 2019 tutorial on Progressive Robot

How to Configure Hyper-V Virtual Networking on Windows Server 2019

Introduction to Hyper-V Virtual Networking on Windows Server 2019 Hyper-V virtual networking is the fabric that connects virtual machines to each other, to the physical network, and to the Hyper-V host. Windows Server 2019 introduces several significant networking improvements over previous versions, including support for Software Defined Networking (SDN), the Virtual Filtering Platform (VFP) extension, […]

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Ubuntu 18.04 — flightcrew — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — flightcrew — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 6 June 2019 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4055-1 Related CVEs: CVE-2019-13032 CVE-2019-13241 CVE-2019-13453 Upstream summary: Mike Salvatore discovered that FlightCrew improperly handled certain malformed EPUB files. An attacker could potentially use this vulnerability to cause a denial […]

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How to Set Up Alertmanager with PagerDuty and Slack Integration on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Set Up Alertmanager with PagerDuty and Slack Integration on RHEL 8

Alertmanager handles alert routing, deduplication, and notification dispatch for Prometheus. By integrating it with Slack and PagerDuty, your team receives real-time notifications through familiar channels while on-call engineers get paged for critical incidents. This tutorial walks through installing Alertmanager on RHEL 8, configuring receivers for both platforms, setting up routing logic, and verifying the setup […]

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SLES 15 — libgnomesu — vulnerability — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — libgnomesu — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 6 June 2019 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2011-1946 Upstream summary: gnomesu-pam-backend in libgnomesu 1.0.0 prints an error message but proceeds with the non-error code path upon failure of the setgid or setuid […]

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Debian 9 — mupdf — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Debian 9

Debian 9 — mupdf — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 6 June 2019 Affected versions: Debian 9 (stretch) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2017-14685 CVE-2017-15587 CVE-2017-17866 CVE-2018-6544 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches […]

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Arch Linux — wesnoth — vulnerability — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — wesnoth — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-201807-15 Related CVEs: CVE-2018-1999023 Upstream summary: Type: arbitrary code execution. Status: Fixed. Affected: 1.14.3-1. Fixed in: 1.14.4-1. Group: AVG-741. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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FreeBSD 12 — bitcoin-daemon — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — bitcoin-daemon — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 5 June 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: bitcoin — Denial of Service and Possible Mining Inflation Related CVEs: CVE-2018-17144 Upstream summary: Bitcoin Core reports: CVE-2018-17144, a fix for which was released on September 18th in Bitcoin Core […]

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