Systemd Services

Ubuntu 16.04 — libsdl2 — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — libsdl2 — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 6 July 2020 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4143-1 Related CVEs: CVE-2017-2888 CVE-2019-7635 CVE-2019-7636 CVE-2019-7637 CVE-2019-7638 Upstream summary: It was discovered that SDL 2.0 mishandled crafted image files resulting in an integer overflow. If a user were tricked […]

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SLES 15 — python-azure-agent — vulnerability — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — python-azure-agent — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 6 July 2020 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2019:0603-1 (see also SUSE bugzilla) Related CVEs: CVE-2019-0804 Upstream summary: An information disclosure vulnerability exists in the way Azure WaLinuxAgent creates swap files on resource disks, aka 'Azure Linux Agent Information Disclosure […]

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

Oracle Linux 8 — cpio — vulnerability — patch and remediation guide (ELSA-2021-1582)

🟡 Medium   ⏱ 10–30 min  Last verified: 6 July 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-1582 Related CVEs: CVE-2019-14866 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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IBM AIX 7.2 — CVE-2020-4937 — vulnerability — patch and remediation guide — diagnosis and fix on IBM AIX 7.2

IBM AIX 7.2 — CVE-2020-4937 — vulnerability — patch and remediation guide

🟠 High   ⏱ 30–90 min  Last verified: 6 July 2020 Affected versions: IBM AIX 7.2 📖 ~4 min read  •  Source: NVD CVE-2020-4937, IBM Support Bulletin CVE: CVE-2020-4937 NVD summary: IBM Sterling B2B Integrator Standard Edition 5.2.0.0 through 6.0.3.2 uses weaker than expected cryptographic algorithms that could allow an attacker to decrypt highly sensitive […]

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Gentoo Linux — media-libs/freeimage — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — media-libs/freeimage — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202107-02 Related CVEs: CVE-2019-12211 CVE-2019-12213 Upstream summary: Multiple vulnerabilities have been discovered in FreeImage. Please review the CVE identifiers referenced below for details. Table of contents Symptom & Impact Environment & Reproduction […]

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Oracle Linux 8 — ELSA-2020-5624-1: thunderbird — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — ELSA-2020-5624-1: thunderbird — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 6 July 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-5624-1 Related CVEs: CVE-2020-26974 CVE-2020-16042 CVE-2020-26971 CVE-2020-35113 CVE-2020-35111 CVE-2020-26973 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 Set Up IPv6 on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Set Up IPv6 on Debian 10

Introduction Deploying set up ipv6 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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Alpine Linux edge — faac — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux edge

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

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 1.30-r0 📖 ~4 min read  •  Source: Alpine secdb entry — faac 1.30-r0 Related CVEs: CVE-2018-19886 Upstream summary: Alpine community repository for vedge ships faac 1.30-r0 which addresses CVE-2018-19886. Table of contents Symptom & Impact Environment […]

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Common Problems 121043

Debian 10 – systemd service remains in activating state after reboot

🟠 High   ⏱ 5–30 min  Last verified: 5 July 2020 Affected versions: Debian 10 📖 ~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 Harden Shared Memory on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Harden Shared Memory on Debian 10

Introduction This guide explains how to Harden Shared Memory 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 standard […]

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