Package Management

How to Secure Nginx with Let's Encrypt on SLES 12 — step-by-step SUSE Linux Enterprise 12 tutorial on Progressive Robot

How to Secure Nginx with Let’s Encrypt on SLES 12

Introduction This tutorial covers How to Secure Nginx with Let’s Encrypt 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: […]

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Alpine Linux edge — junit — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — junit — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 4.13.1-r0 📖 ~4 min read  •  Source: Alpine secdb entry — junit 4.13.1-r0 Related CVEs: CVE-2020-15250 Upstream summary: Alpine community repository for vedge ships junit 4.13.1-r0 which addresses CVE-2020-15250. Table of contents Symptom & Impact Environment […]

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How to Enable OCSP Stapling on Nginx on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Enable OCSP Stapling on Nginx on Debian 9

Introduction This guide explains how to Enable OCSP Stapling on Nginx 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 […]

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FreeBSD 12 — linux-f8-pango — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — linux-f8-pango — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 7 April 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: pango — integer overflow Related CVEs: CVE-2009-1194 Upstream summary: oCERT reports: Pango suffers from a multiplicative integer overflow which may lead to a potentially exploitable, heap overflow depending on the […]

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SLES 15 — sane-backends — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — sane-backends — multiple vulnerabilities (8 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 7 April 2020 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2020:3065-1 (see also SUSE bugzilla) Related CVEs: CVE-2020-12861 CVE-2020-12862 CVE-2020-12863 CVE-2020-12864 CVE-2020-12865 CVE-2020-12866 CVE-2020-12867 CVE-2017-6318 Upstream summary: A heap buffer overflow in SANE Backends before 1.0.30 allows a malicious device connected to […]

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

Arch Linux — swtpm — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-202011-21 Related CVEs: CVE-2020-28407 Upstream summary: Type: privilege escalation. Status: Fixed. Affected: 0.5.0-2. Fixed in: 0.5.1-1. Group: AVG-1282. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis […]

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Oracle Linux 8 — krb5 — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — krb5 — vulnerability — patch and remediation guide (ELSA-2021-1593)

🟡 Medium   ⏱ 10–30 min  Last verified: 7 April 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-1593 Related CVEs: CVE-2020-28196 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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How to Configure OpenSCAP Security Compliance on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Configure OpenSCAP Security Compliance on Debian 10

Introduction How to Configure OpenSCAP Security Compliance on Debian 10 is a fundamental operation for any administrator maintaining a Debian 10 Buster server. Debian 10 Buster ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from Debian 10. […]

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

Debian 9 — postgresql-common — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 7 April 2020 Affected versions: Debian 9 (stretch) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2017-8806 CVE-2019-3466 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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