Linux

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-2024-4517)

🟠 High   ⏱ 15–60 min  Last verified: 9 April 2024 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2024-4517 Related CVEs: CVE-2024-6601 CVE-2024-6603 CVE-2024-6604 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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Ubuntu 14.04 — clamav — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 14.04

Ubuntu 14.04 — clamav — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 9 April 2024 Affected versions: Ubuntu 14.04 (trusty) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6303-2 Related CVEs: CVE-2023-20197 CVE-2023-20032 CVE-2023-20052 CVE-2022-20770 CVE-2022-20771 CVE-2022-20785 CVE-2022-20792 CVE-2022-20796  +12 more Upstream summary: USN-6303-1 fixed a vulnerability in ClamAV. This update provides the corresponding update for Ubuntu 14.04 […]

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Alpine Linux 3.18 — sudo — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux 3.18

Alpine Linux 3.18 — sudo — multiple vulnerabilities (7 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Alpine Linux 3.18 / fixed in 1.9.5p2-r0 📖 ~4 min read  •  Source: Alpine secdb entry — sudo 1.9.5p2-r0 Related CVEs: CVE-2021-3156 CVE-2021-23239 CVE-2021-23240 CVE-2023-22809 CVE-2019-18634 CVE-2019-14287 CVE-2017-1000368 Upstream summary: Alpine community repository for vv3.18 ships sudo 1.9.5p2-r0 which addresses CVE-2021-3156. Table […]

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Oracle Linux 9 — cockpit — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — cockpit — vulnerability — patch and remediation guide (ELSA-2024-9325)

🟢 Low   ⏱ 5–15 min  Last verified: 9 April 2024 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2024-9325 Related CVEs: CVE-2024-6126 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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How to Use OpenSSL to Generate and Manage SSL Certificates on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Use OpenSSL to Generate and Manage SSL Certificates on RHEL 9

OpenSSL is the most widely used toolkit for working with SSL/TLS certificates on Linux systems. On RHEL 9, it provides everything you need to generate private keys, create certificate signing requests (CSRs), sign certificates using your own certificate authority, and convert between certificate formats. Understanding OpenSSL is essential for any sysadmin managing secure services. This […]

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Debian 12 — libid3tag — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — libid3tag — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 8 April 2024 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2004-2779 CVE-2008-2109 CVE-2017-11550 CVE-2017-11551 Upstream summary: id3_utf16_deserialize() in utf16.c in libid3tag through 0.15.1b misparses ID3v2 tags encoded in UTF-16 with an odd number of bytes, triggering an endless […]

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Debian 12 — php-mdb2 — vulnerability — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — php-mdb2 — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 8 April 2024 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2007-5934 Upstream summary: The LOB functionality in PEAR MDB2 before 2.5.0a1 interprets a request to store a URL string as a request to retrieve and store the contents […]

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Debian 11 — needrestart — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — needrestart — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 8 April 2024 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2022-30688 CVE-2024-11003 CVE-2024-48990 CVE-2024-48991 CVE-2024-48992 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative […]

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Debian 12 — indent — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — indent — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 8 April 2024 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2023-40305 CVE-2024-0911 Upstream summary: GNU indent 2.2.13 has a heap-based buffer overflow in search_brace in indent.c via a crafted file. Table of contents Symptom & Impact Environment & […]

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AlmaLinux 9 — harfbuzz — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on AlmaLinux 9

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

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 9 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2024:2410 Related CVEs: CVE-2023-25193 CVE-2022-33068 Upstream summary: HarfBuzz is an implementation of the OpenType Layout engine. Security Fix(es): * harfbuzz: allows attackers to trigger O(n^2) growth via consecutive marks (CVE-2023-25193) For more […]

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