Troubleshooting

Debian 9 — openssl1.0 — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on Debian 9

Debian 9 — openssl1.0 — multiple vulnerabilities (7 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 8 March 2020 Affected versions: Debian 9 (stretch) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2017-3735 CVE-2017-3737 CVE-2018-0732 CVE-2018-0739 CVE-2019-1547 CVE-2019-1551 CVE-2019-1559 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution […]

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How to Harden the Linux Kernel with sysctl on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Harden the Linux Kernel with sysctl on RHEL 8

The Linux kernel exposes hundreds of tunable parameters through the /proc/sys virtual filesystem, and sysctl is the tool used to read and write these values persistently. Many default kernel settings prioritize compatibility and functionality over security, leaving attack surface that can be closed with targeted configuration. On RHEL 8, persistent sysctl settings are stored in […]

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How to Install and Configure DB2 on IBM AIX 7.1 — step-by-step IBM AIX 7.1 tutorial on Progressive Robot

How to Install and Configure DB2 on IBM AIX 7.1

Introduction IBM AIX 7.1 is the latest release of IBM’s enterprise-grade UNIX operating system, running on IBM Power Systems hardware. Known for its reliability, security, and performance in mission-critical environments, AIX 7.1 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to install and configure db2 on ibm aix 7.1 on […]

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openSUSE Tumbleweed — empathy — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — empathy — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2011-3635 Upstream summary: Cross-site scripting (XSS) vulnerability in the theme_adium_append_message function in empathy-theme-adium.c in the Adium theme in libempathy-gtk in Empathy 3.2.1 and earlier allows […]

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How to Deploy Applications with Helm on SLES 12 — step-by-step SUSE Linux Enterprise 12 tutorial on Progressive Robot

How to Deploy Applications with Helm on SLES 12

Introduction This tutorial covers How to Deploy Applications with Helm 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 […]

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How to Manage AIX Subsystems with SRC on IBM AIX 7.1 — step-by-step IBM AIX 7.1 tutorial on Progressive Robot

How to Manage AIX Subsystems with SRC on IBM AIX 7.1

Introduction IBM AIX 7.1 is the latest release of IBM’s enterprise-grade UNIX operating system, running on IBM Power Systems hardware. Known for its reliability, security, and performance in mission-critical environments, AIX 7.1 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to manage aix subsystems with src on ibm aix 7.1 […]

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FreeBSD 12 — proxychains-ng — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — proxychains-ng — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 7 March 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: proxychains-ng — current path as the first directory for the library search path Related CVEs: CVE-2015-3887 Upstream summary: Mamoru TASAKA reports: proxychains4 sets LD_PRELOAD to dlopen libproxychains4.so and execvp() the […]

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FreeBSD 12 — squidclamav — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — squidclamav — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 7 March 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: squidclamav — cross-site scripting in default virus warning pages Related CVEs: CVE-2012-3501 CVE-2012-4667 Upstream summary: SquidClamav developers report: This release fix several security issues by escaping CGI parameters. Prior to […]

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FreeBSD 12 — gpgme — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — gpgme — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 7 March 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: gpgme — heap-based buffer overflow in gpgsm status handler Related CVEs: CVE-2014-3564 Upstream summary: Tomas Trnka reports: Gpgme contains a buffer overflow in the gpgsm status handler that could possibly […]

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How to Install and Configure Maven on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Install and Configure Maven on Debian 10

Introduction This guide explains how to Install and Configure Maven on Debian 10 on Debian 10 Buster. Debian Buster 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 10 install with the […]

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