Linux

Ubuntu 16.04 — pdns — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — pdns — multiple vulnerabilities (6 CVEs) — patch and remediation guide

  • April 24, 2023
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 24 April 2023 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7203-1 Related CVEs: CVE-2018-1046 CVE-2018-10851 CVE-2018-14626 CVE-2018-14644 CVE-2020-17482 CVE-2022-27227 Upstream summary: Wei Hao discovered that PowerDNS Authoritative Server incorrectly handled memory when accessing certain files. An attacker could possibly use […]

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Ubuntu 20.04 — tika — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — tika — multiple vulnerabilities (5 CVEs) — patch and remediation guide

  • April 24, 2023
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 24 April 2023 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7529-1 Related CVEs: CVE-2022-33879 CVE-2022-30126 CVE-2022-30973 CVE-2020-1950 CVE-2020-1951 Upstream summary: It was discovered that Apache Tika can have an excessive memory usage by using a crafted or corrupt PSD file. […]

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Ubuntu 18.04 — zlib — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — zlib — multiple vulnerabilities (2 CVEs) — patch and remediation guide

  • April 24, 2023
  • Linux
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🟢 Low   ⏱ 5–15 min  Last verified: 24 April 2023 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5570-1 Related CVEs: CVE-2022-37434 CVE-2018-25032 Upstream summary: Evgeny Legerov discovered that zlib incorrectly handled memory when performing certain inflate operations. An attacker could use this issue to cause zlib to […]

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How To Install MySQL on Ubuntu 20.04 [Quickstart] — step-by-step Linux tutorial on Progressive Robot

How To Install MySQL on Ubuntu 20.04 [Quickstart]

  • April 24, 2023
  • Linux
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MySQL is an open-source database management system, commonly installed as part of the popular LAMP (Linux, Apache, MySQL, PHP/Python/Perl) stack. It implements the relational model and uses SQL (Structured Query Language) to manage its data. This tutorial will explain how to install MySQL on an Ubuntu 20.04 server.

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Amazon Linux 2 — golang-github-kr-pty — multiple vulnerabilities (16 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — golang-github-kr-pty — multiple vulnerabilities (16 CVEs) — patch and remediation guide

  • April 24, 2023
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2-2022-1864 Related CVEs: CVE-2022-1705 CVE-2022-1962 CVE-2022-1996 CVE-2022-24675 CVE-2022-27191 CVE-2022-27664 CVE-2022-28131 CVE-2022-28327  +8 more Upstream summary: 2023-05-11: CVE-2022-1996 has changed status to NOT AFFECTED for this package and has been removed […]

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Common Problems 124537

Oracle Linux 9 – Common Problem 008 – Diagnosis and Fix

  • April 23, 2023
  • Linux
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🟠 High   ⏱ 5–30 min  Last verified: 23 April 2023 Affected versions: Oracle Linux 9 📖 ~2 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 121541

Debian 9 – sshd Fails to Start After Config Change – Fast Validation Workflow

  • April 23, 2023
  • Linux
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🔴 Critical   ⏱ 5–30 min  Last verified: 23 April 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 115579

RHEL 7 sudo failures caused by PAM or sudoers syntax errors

  • April 23, 2023
  • Linux
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🟠 High   ⏱ 5–30 min  Last verified: 23 April 2023 Affected versions: RHEL 7 📖 ~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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AlmaLinux 9 — samba — multiple vulnerabilities (11 CVEs) — patch and remediation guide — diagnosis and fix on AlmaLinux 9

AlmaLinux 9 — samba — multiple vulnerabilities (11 CVEs) — patch and remediation guide

  • April 23, 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-2023:2127 Related CVEs: CVE-2022-38023 CVE-2022-2127 CVE-2023-34966 CVE-2023-34967 CVE-2023-34968 CVE-2023-3961 CVE-2023-4091 CVE-2023-42669  +3 more Upstream summary: Samba is an open-source implementation of the Server Message Block (SMB) protocol and the related Common Internet […]

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Debian 11 — intel-mediasdk — multiple vulnerabilities (15 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — intel-mediasdk — multiple vulnerabilities (15 CVEs) — patch and remediation guide

  • April 23, 2023
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 23 April 2023 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2022-27170 CVE-2022-34346 CVE-2022-34841 CVE-2022-35883 CVE-2022-36289 CVE-2023-22656 CVE-2023-45221 CVE-2023-47169  +7 more Upstream summary: Protection mechanism failure in the Intel(R) Media SDK software before version 22.2.2 may allow an authenticated […]

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