IT, Cloud & DevOps Blog

Oracle Linux 8 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide (ELSA-2022-26385)

🟠 High   ⏱ 15–60 min  Last verified: 24 July 2019 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-26385 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 […]

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How To Host a Website with Caddy on CentOS 7 — step-by-step Linux tutorial on Progressive Robot

How To Host a Website with Caddy on CentOS 7

[Caddy](https://caddyserver.com/) is a new web server which can be used in place of Apache or Nginx to serve websites. It has been created with ease of use in mind and has become a common choice for developers who want to quickly run a website without working out difficult configuration files. In this tutorial, you will install and configure Caddy. After following this tutorial, you will have a simple working website served using HTTP/2 and a secure TLS connection.

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Arch Linux — libssh2 — multiple vulnerabilities (9 CVEs) — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — libssh2 — multiple vulnerabilities (9 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-201903-12 Related CVEs: CVE-2019-3863 CVE-2019-3862 CVE-2019-3861 CVE-2019-3860 CVE-2019-3859 CVE-2019-3858 CVE-2019-3857 CVE-2019-3856  +1 more Upstream summary: Type: multiple issues. Status: Fixed. Affected: 1.8.0-3. Fixed in: 1.8.1-1. Group: AVG-926. Table of contents […]

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Common Problems 118991

Ubuntu 14.04 LTS root filesystem full from runaway logs

🟠 High   ⏱ 5–30 min  Last verified: 23 July 2019 Affected versions: 14.04 LTS 📖 ~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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FreeBSD 12 — linux-c6-libtiff — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — linux-c6-libtiff — multiple vulnerabilities (8 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 23 July 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: tiff — multiple vulnerabilities Related CVEs: CVE-2015-8870 CVE-2016-5652 CVE-2016-9533 CVE-2016-9534 CVE-2016-9535 CVE-2016-9536 CVE-2016-9537 CVE-2016-9540 Upstream summary: libtiff project reports: Multiple flaws have been discovered in libtiff library and utilities. Table […]

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Common Problems 115435

RHEL 7 SELinux Denies httpd Write Access

🟠 High   ⏱ 5–30 min  Last verified: 23 July 2019 Affected versions: RHEL 7 📖 ~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 Install Helm Package Manager for Kubernetes on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Install Helm Package Manager for Kubernetes on Debian 9

Introduction Debian 9 Stretch is built around the ethos of stability and free software. Setting up install helm package manager for kubernetes on debian 9 on Stretch leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Stretch freeze. Follow each step […]

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FreeBSD 12 — libevent — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — libevent — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 23 July 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: libevent — multiple vulnerabilities Related CVEs: CVE-2014-6272 CVE-2016-10195 CVE-2016-10196 CVE-2016-10197 Upstream summary: Debian Security reports: CVE-2016-10195: The name_parse function in evdns.c in libevent before 2.1.6-beta allows remote attackers to have […]

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openSUSE Tumbleweed — perl-Config-IniFiles — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — perl-Config-IniFiles — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2012-2451 Upstream summary: The Config::IniFiles module before 2.71 for Perl creates temporary files with predictable names, which allows local users to overwrite arbitrary files via […]

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Common Problems 115061

RHEL 8 postfix Service Active but Not Listening on Expected Interface

🟡 Medium   ⏱ 5–30 min  Last verified: 23 July 2019 📖 ~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 & Cross-Refs References & Further […]

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