Troubleshooting

How to Set Up Checkmk on SLES 12 — step-by-step SUSE Linux Enterprise 12 tutorial on Progressive Robot

How to Set Up Checkmk on SLES 12

Introduction This tutorial covers How to Set Up Checkmk on SLES 12 on SLES 12. SLES 12 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Prerequisites Ensure your SLES 12 system is up to date: zypper refresh […]

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FreeBSD 12 — horde-php — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — horde-php — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 8 March 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: horde — various problems in dereferrer Related CVEs: CVE-2005-0961 CVE-2005-3759 CVE-2006-1491 CVE-2006-2195 CVE-2006-3548 Upstream summary: Horde 3.1.2 release announcement: Security Fixes: Closed XSS problems in dereferrer (IE only), help viewer […]

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Common Problems 115624

RHEL 7 Requires SELinux Relabel After Filesystem Restore

🟠 High   ⏱ 5–30 min  Last verified: 8 March 2020 Affected versions: RHEL 7 📖 ~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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How to Configure Static IP on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Configure Static IP on Debian 10

Introduction Deploying configure static ip on debian 10 on a Debian 10 Buster machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. Prerequisites You will need […]

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FreeBSD 12 — p5-libwww — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — p5-libwww — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 8 March 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: p5-libwww — possibility to remote servers to create file with a .(dot) character Related CVEs: CVE-2010-2253 Upstream summary: lwp-download in libwww-perl before 5.835 does not reject downloads to filenames that […]

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Ubuntu 18.04 — apt — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — apt — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 8 March 2020 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4667-1 Related CVEs: CVE-2020-27350 CVE-2020-3810 CVE-2019-3462 CVE-2018-0501 Upstream summary: Kevin Backhouse discovered that APT incorrectly handled certain packages. A local attacker could possibly use this issue to cause APT to […]

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Alpine Linux edge — irssi — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — irssi — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 1.2.2-r0 📖 ~4 min read  •  Source: Alpine secdb entry — irssi 1.2.2-r0 Related CVEs: CVE-2019-15717 CVE-2019-13045 CVE-2019-5882 CVE-2018-7050 CVE-2018-7051 CVE-2018-7052 CVE-2018-7053 CVE-2018-7054  +12 more Upstream summary: Alpine community repository for vedge ships irssi 1.2.2-r0 which […]

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Debian 9 — icu — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 9

Debian 9 — icu — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 8 March 2020 Affected versions: Debian 9 (stretch) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2017-15422 CVE-2020-10531 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 Set Up IIS URL Rewrite on Windows Server 2019 — step-by-step Windows Server 2019 tutorial on Progressive Robot

How to Set Up IIS URL Rewrite on Windows Server 2019

Introduction to IIS URL Rewrite on Windows Server 2019 The IIS URL Rewrite module is a powerful extension for IIS 10 on Windows Server 2019 that allows server-side manipulation of incoming request URLs before they are processed. URL Rewrite is used for canonicalising URLs (removing or adding trailing slashes, enforcing lowercase), redirecting HTTP to HTTPS, […]

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