Linux

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

Oracle Linux 8 — microcode_ctl — vulnerability — patch and remediation guide (ELSA-2023-12723)

🟡 Medium   ⏱ 10–30 min  Last verified: 3 May 2023 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-12723 Related CVEs: CVE-2022-40982 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 9 — kernel security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — kernel security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2023-5069)

🟠 High   ⏱ 15–60 min  Last verified: 2 May 2023 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-5069 Related CVEs: CVE-2023-1637 CVE-2023-3776 CVE-2023-21102 CVE-2023-4147 CVE-2023-3390 CVE-2023-31248 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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Common Problems 121589

Debian 9 sudo Command Not Found or Permission Denied

🟠 High   ⏱ 5–30 min  Last verified: 2 May 2023 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 115136

RHEL 8 subscription-manager Shows Repositories Disabled Unexpectedly – RHEL 8 Post 149

🟡 Medium   ⏱ 5–30 min  Last verified: 2 May 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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Ubuntu 18.04 — cargo — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — cargo — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 2 May 2023 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6275-1 Related CVEs: CVE-2023-38497 Upstream summary: Addison Crump discovered that Cargo incorrectly set file permissions on UNIX-like systems when extracting crate archives. If the crate would contain files writable by […]

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CentOS Stream 9 — fwupd — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on CentOS Stream 9

CentOS Stream 9 — fwupd — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 2 May 2023 Affected versions: CentOS Stream 9 📖 ~4 min read  •  Source: AlmaLinux/RHEL advisory ALSA-2023:2487 Related CVEs: CVE-2022-3287 CVE-2022-34301 CVE-2022-34302 CVE-2022-34303 Upstream summary: The fwupd packages provide a service that allows session software to update device firmware. Security Fix(es): * fwupd: world readable password in […]

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Oracle Linux 9 — grafana-pcp — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — grafana-pcp — vulnerability — patch and remediation guide (ELSA-2022-8250)

🟡 Medium   ⏱ 10–30 min  Last verified: 2 May 2023 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-8250 Related CVEs: CVE-2022-32148 CVE-2022-30635 CVE-2022-30630 CVE-2022-30631 CVE-2022-1705 CVE-2022-30632 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 Install Apache2 on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Install Apache2 on Debian 9

Introduction Deploying install apache2 on debian 9 on a Debian 9 Stretch machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. Prerequisites You will need a […]

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

Oracle Linux 8 — microcode_ctl — vulnerability — patch and remediation guide (ELSA-2023-12988)

🟠 High   ⏱ 15–60 min  Last verified: 2 May 2023 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-12988 Related CVEs: CVE-2023-23583 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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