Operations

Ubuntu 16.04 — advancecomp — multiple vulnerabilities (11 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — advancecomp — multiple vulnerabilities (11 CVEs) — patch and remediation guide

  • March 25, 2023
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 25 March 2023 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5838-1 Related CVEs: CVE-2022-35014 CVE-2022-35015 CVE-2022-35016 CVE-2022-35017 CVE-2022-35018 CVE-2022-35019 CVE-2022-35020 CVE-2019-8379  +3 more Upstream summary: It was discovered that AdvanceCOMP did not properly manage memory while performing read operations on […]

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Ubuntu 20.04 — fribidi — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — fribidi — multiple vulnerabilities (3 CVEs) — patch and remediation guide

  • March 25, 2023
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 March 2023 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5366-1 Related CVEs: CVE-2022-25308 CVE-2022-25309 CVE-2022-25310 Upstream summary: It was discovered that FriBidi incorrectly handled processing of input strings resulting in memory corruption. An attacker could use this issue to […]

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openSUSE Tumbleweed — python38-jwcrypto — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — python38-jwcrypto — vulnerability — patch and remediation guide

  • March 25, 2023
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2025:15096-1 (see also SUSE bugzilla) Related CVEs: CVE-2022-3102 Upstream summary: Unknown. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution […]

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Oracle Linux 8 — firefox — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — firefox — vulnerability — patch and remediation guide (ELSA-2022-5469)

  • March 25, 2023
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 25 March 2023 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-5469 Related CVEs: CVE-2022-34481 CVE-2022-31744 CVE-2022-34468 CVE-2022-34479 CVE-2022-2200 CVE-2022-34484 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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How to Configure Windows Server 2022 Firewall — step-by-step Windows Server 2022 tutorial on Progressive Robot

How to Configure Windows Server 2022 Firewall

How to Configure Windows Firewall with Advanced Security on Windows Server 2022 Windows Defender Firewall with Advanced Security is a host-based, stateful firewall built into every edition of Windows Server 2022. Unlike the basic firewall panel in Control Panel, the Advanced Security console exposes the full rule engine: inbound and outbound rules, connection security rules, […]

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Oracle Linux 9 — java-1.8.0-openjdk — security and stability fixes — required update — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — java-1.8.0-openjdk — security and stability fixes — required update (ELSA-2023-4178)

  • March 24, 2023
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 24 March 2023 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-4178 Related CVEs: CVE-2023-22045 CVE-2023-22049 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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AlmaLinux 9 — libwebp — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on AlmaLinux 9

AlmaLinux 9 — libwebp — multiple vulnerabilities (2 CVEs) — patch and remediation guide

  • March 24, 2023
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 9 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2023:5214 Related CVEs: CVE-2023-4863 CVE-2023-1999 Upstream summary: The libwebp packages provide a library and tools for the WebP graphics format. WebP is an image format with a lossy compression of digital photographic […]

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Common Problems 115629

SELinux AVC Flood Causing Performance Degradation

🟡 Medium   ⏱ 5–30 min  Last verified: 24 March 2023 📖 ~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 Configure Redis Cluster on Oracle Linux 9 — step-by-step Oracle Linux 9 tutorial on Progressive Robot

How to Configure Redis Cluster on Oracle Linux 9

Introduction Oracle Linux 9 ships with a stable, security-hardened base that makes deploying configure redis cluster on oracle linux 9 both straightforward and auditable. This tutorial covers the complete procedure for how to Configure Redis Cluster on Oracle Linux 9, including dnf module streams where applicable, systemd unit management, and the firewalld rules required for […]

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