Systemd Services

How to Install HAProxy on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Install HAProxy on Oracle Linux 8

Introduction Setting up install haproxy 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 Install HAProxy on Oracle Linux 8, with all the commands you need, the SELinux and firewalld considerations to keep in mind, and […]

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How to Configure Drone CI on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Configure Drone CI on Debian 9

Introduction This guide explains how to Configure Drone CI on Debian 9 on Debian 9 Stretch. Debian Stretch uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian 9 install with the standard […]

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SLES 15 — go1.13 — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — go1.13 — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 28 November 2020 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2020-7919 CVE-2020-15586 CVE-2020-14039 CVE-2020-16845 Upstream summary: Go before 1.12.16 and 1.13.x before 1.13.7 (and the crypto/cryptobyte package before 0.0.0-20200124225646-8b5121be2f68 for Go) allows attacks on clients […]

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Oracle Linux 8 — json-c — security and stability fixes — required update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — json-c — security and stability fixes — required update (ELSA-2021-4382)

🟡 Medium   ⏱ 10–30 min  Last verified: 27 November 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-4382 Related CVEs: CVE-2020-12762 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

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Common Problems 115508

RHEL 7 Cron Job Runs but Script Fails Under SELinux

🟡 Medium   ⏱ 5–30 min  Last verified: 27 November 2020 📖 ~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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openSUSE Tumbleweed — kitty — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — kitty — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2021:0025-1 (see also SUSE bugzilla) Related CVEs: CVE-2020-35605 CVE-2008-2383 Upstream summary: The Graphics Protocol feature in graphics.c in kitty before 0.19.3 allows remote attackers to execute arbitrary code because a filename containing […]

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Common Problems 115077

systemd-resolved Not Used and DNS Queries Intermittently Fail

🟡 Medium   ⏱ 5–30 min  Last verified: 27 November 2020 📖 ~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 12 — rubygem-websocket-extensions — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — rubygem-websocket-extensions — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 27 November 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: websocket-extensions — ReDoS vulnerability Related CVEs: CVE-2020-7663 Upstream summary: Changelog: Remove a ReDoS vulnerability in the header parser (CVE-2020-7663) Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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FreeBSD 12 — rubygem-activesupport — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — rubygem-activesupport — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 27 November 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: Rails — multiple vulnerabilities Related CVEs: CVE-2007-3227 CVE-2012-3463 CVE-2012-3464 CVE-2012-3465 CVE-2013-0155 CVE-2013-0156 CVE-2013-1854 CVE-2013-1856  +12 more Upstream summary: Ruby on Rails blog: Hi everyone! Rails 5.2.4.3 and 6.0.3.1 have been […]

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FreeBSD 12 — libzmq — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — libzmq — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 27 November 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: libzmq4 — Denial of Service Related CVEs: CVE-2014-9721 CVE-2019-13132 CVE-2019-6250 CVE-2020-15166 Upstream summary: Google's oss-fuzz project reports: Denial-of-Service on CURVE/ZAP-protected servers by unauthenticated clients. If a raw TCP socket is […]

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