2019 - Page 194 of 527

Debian 10 — libidn2 — vulnerability — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — libidn2 — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 26 September 2019 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-18224 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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How to Install Puppet Agent on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Install Puppet Agent on Debian 9

Introduction How to Install Puppet Agent on Debian 9 is a fundamental operation for any administrator maintaining a Debian 9 Stretch server. Debian 9 Stretch 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 9. This […]

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Ubuntu 18.04 — xmltooling — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — xmltooling — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 26 September 2019 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-3921-1 Related CVEs: CVE-2019-9628 Upstream summary: It was discovered that XMLTooling incorrectly handled certain XML files with invalid data. An attacker could use this issue to cause XMLTooling to crash, […]

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Debian 9 — dovecot — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Debian 9

Debian 9 — dovecot — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 26 September 2019 Affected versions: Debian 9 (stretch) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2017-14461 CVE-2019-11500 CVE-2019-3814 CVE-2019-7524 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches […]

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Comparable and Comparator in Java Example — step-by-step Programming tutorial on Progressive Robot

Comparable and Comparator in Java Example

Comparable and Comparator in Java are very useful for sorting the collection of objects. Java provides some inbuilt methods to sort primitive types array or Wrapper classes array or list. Here we will first learn how we can sort an array/list of primitive types and wrapper classes and then we will use java.lang.Comparable and java.util.Comparator […]

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openSUSE Tumbleweed — ruby2.7-rubygem-sprockets — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — ruby2.7-rubygem-sprockets — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2018:1854-1 (see also SUSE bugzilla) Related CVEs: CVE-2018-3760 Upstream summary: There is an information leak vulnerability in Sprockets. Versions Affected: 4.0.0.beta7 and lower, 3.7.1 and lower, 2.12.4 and lower. Specially crafted requests […]

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Common Problems 115552

Apache returns 503 because php-fpm is down

🟡 Medium   ⏱ 5–30 min  Last verified: 25 September 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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How to Install and Use tmux on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Install and Use tmux on Debian 9

Introduction This guide explains how to Install and Use tmux on Debian 9 on Debian 9 Stretch. Debian Stretch 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 9 install with the […]

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