Linux

Oracle Linux 8 — postgresql-jdbc — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — postgresql-jdbc — vulnerability — patch and remediation guide (ELSA-2023-2867)

🟡 Medium   ⏱ 10–30 min  Last verified: 14 October 2022 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-2867 Related CVEs: CVE-2022-41946 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 — python38:3.8 and python38-devel:3.8 — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — python38:3.8 and python38-devel:3.8 — vulnerability — patch and remediation guide (ELSA-2022-1764)

🟡 Medium   ⏱ 10–30 min  Last verified: 14 October 2022 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-1764 Related CVEs: CVE-2021-3733 CVE-2021-3737 CVE-2021-43818 CVE-2022-0391 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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Oracle Linux 9 — rpm — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — rpm — vulnerability — patch and remediation guide (ELSA-2024-0463)

🟡 Medium   ⏱ 10–30 min  Last verified: 14 October 2022 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2024-0463 Related CVEs: CVE-2021-35937 CVE-2021-35939 CVE-2021-35938 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification […]

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Debian 11 — openssh — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — openssh — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 14 October 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2000-0992 CVE-2001-1459 CVE-2001-1507 CVE-2002-0639 CVE-2002-0640 CVE-2002-0765 CVE-2003-0190 CVE-2003-0386  +12 more Upstream summary: Directory traversal vulnerability in scp in sshd 1.2.xx allows a remote malicious scp server to overwrite […]

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How to Install and Configure RabbitMQ on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Install and Configure RabbitMQ on RHEL 9

RabbitMQ is a mature, battle-tested open-source message broker that implements the AMQP 0-9-1 protocol. It decouples application components by enabling asynchronous communication through exchanges, queues, and bindings. Producers publish messages to exchanges; exchanges route messages to queues based on routing rules (direct, topic, fanout, headers); consumers subscribe to queues and process messages independently of the […]

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How To Install and Configure Ansible on Ubuntu 22.04 — step-by-step Linux tutorial on Progressive Robot

How To Install and Configure Ansible on Ubuntu 22.04

Configuration management systems are designed to streamline the process of controlling large numbers of servers, for administrators and operations teams. They allow you to control many different systems in an automated way from one central location.

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Common Problems 121519

Debian 9 Temporary Failure Resolving During apt update

🟡 Medium   ⏱ 5–30 min  Last verified: 13 October 2022 Affected versions: Debian 9 📖 ~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 120649

Debian 11 OpenSSL Version Mismatch Breaks App Startup

🟠 High   ⏱ 5–30 min  Last verified: 13 October 2022 Affected versions: Debian 11 📖 ~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 — py3-bottle — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — py3-bottle — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 0.12.21-r0 📖 ~4 min read  •  Source: Alpine secdb entry — py3-bottle 0.12.21-r0 Related CVEs: CVE-2022-31799 Upstream summary: Alpine community repository for vedge ships py3-bottle 0.12.21-r0 which addresses CVE-2022-31799. Table of contents Symptom & Impact Environment […]

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Common Problems 117989

Ubuntu 18.04 LTS Package Dependency Errors After Partial Upgrade

🟠 High   ⏱ 5–30 min  Last verified: 13 October 2022 Affected versions: 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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