Operations

AlmaLinux 8 — shim-unsigned-aarch64 — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — shim-unsigned-aarch64 — multiple vulnerabilities (7 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2021:1734 Related CVEs: CVE-2020-14372 CVE-2020-25632 CVE-2020-25647 CVE-2020-27749 CVE-2020-27779 CVE-2021-20225 CVE-2021-20233 Upstream summary: The shim package contains a first-stage UEFI boot loader that handles chaining to a trusted full boot loader under secure […]

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Debian 10 — libspf2 — vulnerability — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — libspf2 — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 18 May 2021 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2021-20314 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 Configure OSPF with FRRouting on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Configure OSPF with FRRouting on FreeBSD 12

Introduction This guide explains how to Configure OSPF with FRRouting on FreeBSD 12 on FreeBSD 12. FreeBSD uses the pkg(8) binary package manager, rc.conf(5) for service startup configuration, and pf(4) as its primary packet filter. There is no SELinux or AppArmor — instead, FreeBSD provides the MAC (Mandatory Access Control) framework and Capsicum for fine-grained […]

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Debian 10 — modsecurity — vulnerability — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — modsecurity — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 18 May 2021 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-15598 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 — libxcb — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — libxcb — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 18 May 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: xorg — protocol handling issues in X Window System client libraries Related CVEs: CVE-2013-1981 CVE-2013-1982 CVE-2013-1983 CVE-2013-1984 CVE-2013-1985 CVE-2013-1986 CVE-2013-1987 CVE-2013-1988  +12 more Upstream summary: freedesktop.org reports: Ilja van Sprundel, […]

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Arch Linux — powerdns-recursor — multiple vulnerabilities (16 CVEs) — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — powerdns-recursor — multiple vulnerabilities (16 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-202010-6 Related CVEs: CVE-2020-25829 CVE-2020-12244 CVE-2020-10995 CVE-2019-3807 CVE-2019-3806 CVE-2018-16855 CVE-2018-14644 CVE-2018-14626  +8 more Upstream summary: Type: denial of service. Status: Fixed. Affected: 4.3.4-1. Fixed in: 4.3.5-1. Group: AVG-1243. Table of […]

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FreeBSD 13 — linux-seamonkey-devel — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — linux-seamonkey-devel — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 18 May 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: mozilla — multiple vulnerabilities Related CVEs: CVE-2006-4253 CVE-2006-4340 CVE-2006-4565 CVE-2006-4566 CVE-2006-4567 CVE-2006-4568 CVE-2006-4569 CVE-2006-4570  +12 more Upstream summary: Mozilla Project reports: MFSA 2009-38: Data corruption with SOCKS5 reply containing DNS […]

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FreeBSD 13 — libtiff — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — libtiff — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 17 May 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: libtiff — Improper Input Validation Related CVEs: CVE-2017-13726 CVE-2017-13727 Upstream summary: libtiff developers report: There is a reachable assertion abort in the function TIFFWriteDirectoryTagSubifd() in LibTIFF 4.0.8, related to tif_dirwrite.c […]

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Oracle Linux 8 — opensc — security and stability fixes — required update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — opensc — security and stability fixes — required update (ELSA-2023-7160)

🟢 Low   ⏱ 5–15 min  Last verified: 17 May 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-7160 Related CVEs: CVE-2023-2977 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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AlmaLinux 8 — ipxe — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — ipxe — 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-2022:1973 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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