Linux

Common Problems 118087

Ubuntu 18.04 LTS – CA certificate trust chain errors break HTTPS endpoints – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 29 January 2020 Affected versions: Ubuntu 18.04 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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Alpine Linux edge — libvterm — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux edge

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

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 0.1.4-r0 📖 ~4 min read  •  Source: Alpine secdb entry — libvterm 0.1.4-r0 Related CVEs: CVE-2018-20786 Upstream summary: Alpine community repository for vedge ships libvterm 0.1.4-r0 which addresses CVE-2018-20786. Table of contents Symptom & Impact Environment […]

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Debian 9 — php-horde-form — vulnerability — patch and remediation guide — diagnosis and fix on Debian 9

Debian 9 — php-horde-form — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 29 January 2020 Affected versions: Debian 9 (stretch) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-9858 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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Ubuntu 18.04 — uwsgi — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — uwsgi — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 29 January 2020 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5054-1 Related CVEs: CVE-2020-11984 Upstream summary: Felix Wilhelm discovered a buffer overflow flaw in the mod_proxy_uwsgi module. An attacker could use this vulnerability to provoke an information disclosure or potentially […]

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How to Install Terraform on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Install Terraform on RHEL 8

Terraform by HashiCorp is the industry-standard tool for provisioning and managing infrastructure as code (IaC) across cloud providers, on-premises platforms, and SaaS APIs. On RHEL 8 you can install Terraform directly from the official HashiCorp RPM repository, keeping it up to date through the standard dnf package manager. This tutorial walks through adding the HashiCorp […]

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How To Run Your Own Mail Server and File Storage with PEPS on Ubuntu 14.04 — step-by-step Linux tutorial on Progressive Robot

How To Run Your Own Mail Server and File Storage with PEPS on Ubuntu 14.04

We all use email and online file storage services like Gmail or Dropbox. However, these services may not be suitable for the storage of sensitive data, both personal and professional. Do we trust their privacy policies when attaching an important business contract or confidential information? Do we accept that all our data will be collected, processed, and analyzed? There is a solution to this problem: PEPS is an email, file sharing, and chat platform that uses end-to-end encryption.

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openSUSE Tumbleweed — dosbox — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — dosbox — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2019:1905-1 (see also SUSE bugzilla) Related CVEs: CVE-2019-12594 CVE-2019-7165 Upstream summary: DOSBox 0.74-2 has Incorrect Access Control. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step […]

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Ubuntu 16.04 — python-rsa — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — python-rsa — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 29 January 2020 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4478-2 Related CVEs: CVE-2020-13757 Upstream summary: USN-4478-1 fixed a vulnerability in Python-RSA. This update provides the corresponding update for Ubuntu 16.04 ESM, Ubuntu 18.04 ESM and Ubuntu 20.04 ESM. Original […]

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