December 2021 - Page 8 of 71

AlmaLinux 8 — coreos-installer — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — coreos-installer — 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-2022:1805 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 13 — tt-rss — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — tt-rss — multiple vulnerabilities (7 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: tt-rss — multiple vulnerabilities Related CVEs: CVE-2016-10033 CVE-2016-10045 CVE-2016-6175 CVE-2017-5223 CVE-2020-25787 CVE-2020-25788 CVE-2020-25789 Upstream summary: tt-rss project reports: The cached_url feature mishandles JavaScript inside an SVG document. imgproxy in plugins/af_proxy_http/init.php […]

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Oracle Linux 8 — virt:ol — security and stability fixes — required update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — virt:ol — security and stability fixes — required update (ELSA-2020-1358)

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-1358 Related CVEs: CVE-2020-1711 CVE-2020-7039 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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How to Install Nagios on CentOS Stream 9 — step-by-step CentOS Stream 9 tutorial on Progressive Robot

How to Install Nagios on CentOS Stream 9

Introduction Setting up install nagios on centos stream 9 on a CentOS Stream 9 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Install Nagios on CentOS Stream 9, with all the commands you need, the SELinux and firewalld considerations to keep in mind, and […]

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FreeBSD 13 — transmission-gtk — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — transmission-gtk — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: libutp — remote denial of service or arbitrary code execution Related CVEs: CVE-2012-6129 Upstream summary: NVD reports: Stack-based buffer overflow in utp.cpp in libutp, as used in Transmission before 2.74 […]

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

Debian 11 — xine-ui — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2004-0372 CVE-2004-1951 CVE-2006-1905 CVE-2006-2230 CVE-2007-0254 Upstream summary: xine allows local users to overwrite arbitrary files via a symlink attack on a bug report email that is generated by […]

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Common Problems 113535

Windows Server 2012 R2 — Asymmetric routing through multi-homed NICs triggers firewall state drops — Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 19 May 2026 Affected versions: Windows Server 2012 R2 📖 ~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 […]

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Debian 11 — opensysusers — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — opensysusers — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2021-40084 Upstream summary: opensysusers through 0.6 does not safely use eval on files in sysusers.d that may contain shell metacharacters. For example, it allows command execution via a […]

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How to Install Nginx on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Install Nginx on FreeBSD 13

Introduction FreeBSD 13 is a UNIX-derived operating system renowned for its network stack performance, ZFS integration, and Jail isolation primitives. Setting up install nginx on freebsd 13 on FreeBSD 13 follows the rc.conf/service(8) paradigm rather than systemd, which means enabling a service and configuring its startup options are done differently from any Linux distribution. This […]

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