Operations

Ubuntu 18.04 — libgcrypt20 — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — libgcrypt20 — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 4 May 2022 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5080-1 Related CVEs: CVE-2021-33560 CVE-2021-40528 CVE-2019-13627 CVE-2018-0495 Upstream summary: It was discovered that Libgcrypt incorrectly handled ElGamal encryption. An attacker could possibly use this issue to recover sensitive information. Table […]

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SLES 12 — arpwatch — vulnerability — patch and remediation guide — diagnosis and fix on SLES 12

SLES 12 — arpwatch — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 4 May 2022 Affected versions: SLES 12 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2021:14759-1 (see also SUSE bugzilla) Related CVEs: CVE-2021-25321 Upstream summary: A UNIX Symbolic Link (Symlink) Following vulnerability in arpwatch of SUSE Linux Enterprise Server 11-SP4-LTSS, SUSE Manager Server 4.0, SUSE OpenStack Cloud […]

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Alpine Linux edge — docker-cli-compose — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — docker-cli-compose — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 2.15.1-r0 📖 ~4 min read  •  Source: Alpine secdb entry — docker-cli-compose 2.15.1-r0 Related CVEs: CVE-2022-27664 CVE-2022-32149 CVE-2022-39253 Upstream summary: Alpine community repository for vedge ships docker-cli-compose 2.15.1-r0 which addresses CVE-2022-27664. Table of contents Symptom & […]

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Oracle Linux 8 — container-tools:ol8 — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — container-tools:ol8 — vulnerability — patch and remediation guide (ELSA-2021-2371)

🟠 High   ⏱ 15–60 min  Last verified: 4 May 2022 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-2371 Related CVEs: CVE-2021-30465 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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Oracle Linux 8 — Unbreakable Enterprise kernel-container — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — Unbreakable Enterprise kernel-container — vulnerability — patch and remediation guide (ELSA-2022-9602)

🟠 High   ⏱ 15–60 min  Last verified: 4 May 2022 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-9602 Related CVEs: CVE-2022-21505 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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openSUSE Tumbleweed — python36-django-debug-toolbar — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — python36-django-debug-toolbar — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE security advisory Related CVEs: CVE-2021-30459 Upstream summary: A SQL Injection issue in the SQL Panel in Jazzband Django Debug Toolbar before 1.11.1, 2.x before 2.2.1, and 3.x before 3.2.1 allows attackers to execute […]

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How to Configure DNSSEC Validation on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Configure DNSSEC Validation on Debian 11

Introduction How to Configure DNSSEC Validation on Debian 11 is a fundamental operation for any administrator maintaining a Debian 11 Bullseye server. Debian 11 Bullseye 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 11. This […]

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