April 2020 - Page 38 of 66

Ubuntu 16.04 — db5.3 — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — db5.3 — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4004-1 Related CVEs: CVE-2019-8457 CVE-2017-10140 Upstream summary: It was discovered that Berkeley DB incorrectly handled certain inputs. An attacker could possibly use this issue to read sensitive information. Table of […]

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Hibernate One To Many Mapping Example Annotation — step-by-step DevOps tutorial on Progressive Robot

Hibernate One To Many Mapping Example Annotation

Today we will look into One To Many Mapping in Hibernate. We will look into Hibernate One To Many Mapping example using Annotation and XML configuration. One To Many Mapping in Hibernate ![one to many mapping in hibernate, hibernate one to many mapping, hibernate mapping example, hibernate one to many mapping annotation example](images/hibernate-one-to-many-mapping-annotation-section-1.png) In simple […]

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How to Set Up pgBouncer Connection Pooler on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Set Up pgBouncer Connection Pooler on Debian 10

Introduction How to Set Up pgBouncer Connection Pooler on Debian 10 is a fundamental operation for any administrator maintaining a Debian 10 Buster server. Debian 10 Buster 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 […]

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openSUSE Tumbleweed — alsa — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — alsa — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2009-0035 Upstream summary: alsa-utils 1.0.19 and later versions allows local users to overwrite arbitrary files via a symlink attack via the /usr/bin/alsa-info and /usr/bin/alsa-info.sh scripts. […]

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Common Problems 121174

Debian 10: certbot renewal fails because web server port is occupied

🟠 High   ⏱ 5–30 min  Last verified: 20 May 2026 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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Common Problems 119032

Ubuntu 14.04 LTS Apache returns 503 due to PHP-FPM issues

🟠 High   ⏱ 5–30 min  Last verified: 19 May 2026 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 — cde — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — cde — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: x11/cde — Local privilege escalation via CDE dtsession Related CVEs: CVE-2020-2696 Upstream summary: Marco Ivaldi (marco.ivaldi () mediaservice net) reports: A buffer overflow in the CheckMonitor() function in the Common […]

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How to Install and Configure Cassandra on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Install and Configure Cassandra on Debian 10

Introduction This guide explains how to Install and Configure Cassandra 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 […]

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Common Problems 118986

Ubuntu 14.04 LTS – significant time drift breaks auth and jobs – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 19 May 2026 Affected versions: Ubuntu 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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