Package Management

How to Configure SSL/TLS with OpenSSL and Self-Signed Certificates on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Configure SSL/TLS with OpenSSL and Self-Signed Certificates on RHEL 7

How to Configure SSL/TLS with OpenSSL and Self-Signed Certificates on RHEL 7 Encrypting web traffic with SSL/TLS is no longer optional for any server that handles user data, logins, or forms. Even on internal or development servers, a self-signed certificate provides encryption in transit and is far preferable to plain HTTP. On RHEL 7, OpenSSL […]

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Oracle Linux 8 — dotnet3.1 security and bugfix update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — dotnet3.1 security and bugfix update (ELSA-2021-0095)

🟠 High   ⏱ 15–60 min  Last verified: 7 July 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-0095 Related CVEs: CVE-2021-1723 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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FreeBSD 13 — rubygem-dragonfly — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — rubygem-dragonfly — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 7 July 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: dragonfly — argument injection Related CVEs: CVE-2021-33564 Upstream summary: NVD reports: An argument injection vulnerability in the Dragonfly gem before 1.4.0 for Ruby allows remote attackers to read and write […]

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AlmaLinux 8 — libmbim — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — libmbim — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALBA-2022:1997 Upstream summary: For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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FreeBSD 12 — ImageMagick6-nox — multiple vulnerabilities (17 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — ImageMagick6-nox — multiple vulnerabilities (17 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 7 July 2021 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: ImageMagick6 — multiple vulnerabilities Related CVEs: CVE-2019-10131 CVE-2019-10649 CVE-2019-10650 CVE-2019-10714 CVE-2019-11470 CVE-2019-11472 CVE-2019-11597 CVE-2019-11598  +9 more Upstream summary: CVE reports: Several vulnerabilities have been discovered in ImageMagick: CVE-2021-20309: A flaw […]

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How to Set Up WireGuard VPN on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Set Up WireGuard VPN on FreeBSD 12 (FREEBSD-12-2)

Introduction How to Set Up WireGuard VPN on FreeBSD 12 is a core administration task for any FreeBSD 12 server operator. FreeBSD 12 ships with the 15.0-RELEASE kernel, ZFS as the default root filesystem, Capsicum capability sandboxing improvements, and an updated ports tree. Unlike Linux distributions, FreeBSD uses rc(8) for service management, pf for packet […]

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Amazon Linux 2 — slapi-nis — vulnerability — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — slapi-nis — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2-2021-1646 Related CVEs: CVE-2021-3480 Upstream summary: A flaw was found in slapi-nis. A NULL pointer dereference during the parsing of the Binding DN could allow an unauthenticated attacker to crash […]

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