Operations

How to Configure Loki for Log Aggregation on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Configure Loki for Log Aggregation on Oracle Linux 8

Introduction How to Configure Loki for Log Aggregation on Oracle Linux 8 on Oracle Linux 8 provides administrators with a robust, enterprise-ready workflow that integrates cleanly with systemd, SELinux, firewalld, and the modern AppStream module system. In this tutorial we will walk through every step required, from package installation to verification, so that the resulting […]

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

AlmaLinux 8 — libXau — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALEA-2020:4742 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 — pivotx — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — pivotx — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 1 May 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: pivotx — Multiple unrestricted file upload vulnerabilities Related CVEs: CVE-2011-1035 CVE-2012-2274 CVE-2014-0341 Upstream summary: Pivotx reports: Multiple unrestricted file upload vulnerabilities in fileupload.php in PivotX before 2.3.9 allow remote authenticated […]

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Common Problems 118542

Ubuntu 16.04 UFW Blocks Required Service Ports

🟡 Medium   ⏱ 5–30 min  Last verified: 1 May 2021 📖 ~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 & Cross-Refs References & Further […]

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FreeBSD 13 — sdl2_image — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — sdl2_image — multiple vulnerabilities (6 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 1 May 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: SDL2_image — multiple vulnerabilities Related CVEs: CVE-2019-5051 CVE-2019-5052 CVE-2019-5057 CVE-2019-5058 CVE-2019-5059 CVE-2019-5060 Upstream summary: SDL_image developers report: Fixed a number of security issues: TALOS-2019-0820 TALOS-2019-0821 TALOS-2019-0841 TALOS-2019-0842 TALOS-2019-0843 TALOS-2019-0844 Table […]

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FreeBSD 13 — ncurses — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — ncurses — multiple vulnerabilities (7 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 1 May 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: ncurses — multiple issues Related CVEs: CVE-2017-13728 CVE-2017-13729 CVE-2017-13730 CVE-2017-13731 CVE-2017-13732 CVE-2017-13733 CVE-2017-13734 Upstream summary: ncurses developers reports: There are multiple illegal address access issues and an infinite loop issue. […]

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AlmaLinux 8 — spirv-tools — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — spirv-tools — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALEA-2022:1962 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 — ghostscript9-nox — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — ghostscript9-nox — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 1 May 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: ghostscript — denial of service (crash) via crafted Postscript files Related CVEs: CVE-2015-3228 Upstream summary: MITRE reports: Integer overflow in the gs_heap_alloc_bytes function in base/gsmalloc.c in Ghostscript 9.15 and earlier […]

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FreeBSD 13 — vim+ruby — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — vim+ruby — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 1 May 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: vim — vulnerabilities in modeline handling: glob, expand Related CVEs: CVE-2004-1138 CVE-2005-2368 Upstream summary: Georgi Guninski discovered a way to construct Vim modelines that execute arbitrary shell commands. The vulnerability […]

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How to Set Up Loki and Promtail for Log Aggregation on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Set Up Loki and Promtail for Log Aggregation on RHEL 8

Loki is a horizontally scalable, highly available log aggregation system designed by Grafana Labs to index only metadata rather than full log content, making it extremely cost-efficient compared to Elasticsearch-based stacks. Promtail is the companion agent that tails local log files, attaches labels, and ships entries to Loki over HTTP. In this tutorial you will […]

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