Security Hardening

How to Configure Loki for Log Aggregation on SLES 16 — step-by-step SUSE Linux Enterprise 16 tutorial on Progressive Robot

How to Configure Loki for Log Aggregation on SLES 16

Introduction This tutorial covers How to Configure Loki for Log Aggregation on SLES 16 on SLES 16. SLES 16 (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 16 system is up to date: […]

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Debian 13 — udisks2 — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — udisks2 — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 14 November 2025 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2014-0004 CVE-2018-17336 CVE-2021-3802 CVE-2025-8067 Upstream summary: Stack-based buffer overflow in udisks before 1.0.5 and 2.x before 2.1.3 allows local users to cause a denial of service (crash) and […]

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How to Configure Fail2ban on SLES 16 — step-by-step SUSE Linux Enterprise 16 tutorial on Progressive Robot

How to Configure Fail2ban on SLES 16

Introduction This tutorial covers How to Configure Fail2ban on SLES 16 on SLES 16. SLES 16 (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. Step 1 — Install Fail2ban zypper install -y fail2ban Step 2 — Enable […]

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How to Automate SLES 16 with Ansible — step-by-step SUSE Linux Enterprise 16 tutorial on Progressive Robot

How to Automate SLES 16 with Ansible

Introduction This tutorial covers How to Automate SLES 16 with Ansible on SLES 16. SLES 16 (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. Step 1 — Install Ansible zypper install -y ansible Step 2 — Configure […]

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Debian 13 — ruby-oauth — vulnerability — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — ruby-oauth — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 14 November 2025 Affected versions: Debian 13 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2016-11086 Upstream summary: lib/oauth/consumer.rb in the oauth-ruby gem through 0.5.4 for Ruby does not verify server X.509 certificates if a certificate bundle cannot be found, which allows man-in-the-middle attackers […]

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Debian 13 — kiwix — vulnerability — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — kiwix — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 14 November 2025 Affected versions: Debian 13 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2015-1032 Upstream summary: Cross-site scripting (XSS) vulnerability in Kiwix before 0.9.1, when using kiwix-serve, allows remote attackers to inject arbitrary web script or HTML via the pattern parameter to […]

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How to Configure Vault PKI Secrets Engine on SLES 16 — step-by-step SUSE Linux Enterprise 16 tutorial on Progressive Robot

How to Configure Vault PKI Secrets Engine on SLES 16

Introduction This tutorial covers How to Configure Vault PKI Secrets Engine on SLES 16 on SLES 16. SLES 16 (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 16 system is up to date: […]

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Debian 13 — apache-mime4j — vulnerability — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — apache-mime4j — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 14 November 2025 Affected versions: Debian 13 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2024-21742 Upstream summary: Improper input validation allows for header injection in MIME4J library when using MIME4J DOM for composing message. This can be exploited by an attacker to add […]

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How to Install Packer on SLES 16 — step-by-step SUSE Linux Enterprise 16 tutorial on Progressive Robot

How to Install Packer on SLES 16

Introduction This tutorial covers How to Install Packer on SLES 16 on SLES 16. SLES 16 (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 16 system is up to date: zypper refresh && […]

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Debian 11 — jupyter-server — multiple vulnerabilities (11 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — jupyter-server — multiple vulnerabilities (11 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 14 November 2025 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-26232 CVE-2020-26275 CVE-2022-24757 CVE-2022-29241 CVE-2023-39968 CVE-2023-40170 CVE-2023-49080 CVE-2025-61669  +3 more Upstream summary: Jupyter Server before version 1.0.6 has an Open redirect vulnerability. A maliciously crafted link to a […]

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