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How to Set Up SSH Two-Factor Authentication on CentOS Stream 9 — step-by-step CentOS Stream 9 tutorial on Progressive Robot

How to Set Up SSH Two-Factor Authentication on CentOS Stream 9

Introduction How to Set Up SSH Two-Factor Authentication on CentOS Stream 9 on CentOS Stream 9 provides administrators with a robust, enterprise-ready workflow that integrates cleanly with systemd, SELinux, firewalld, and the modern AppStream module system. In this tutorial we will walk through every step required, from package installation to verification, so that the resulting […]

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FreeBSD 12 — prometheus — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — prometheus — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 10 May 2022 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: prometheus2 — basic authentication bypass Related CVEs: CVE-2021-29622 CVE-2022-46146 Upstream summary: Prometheus team reports: Prometheus and its exporters can be secured by a web.yml file that specifies usernames and hashed […]

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FreeBSD 13 — py27-radicale — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — py27-radicale — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 10 May 2022 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: radicale — multiple vulnerabilities Related CVEs: CVE-2015-8747 CVE-2015-8748 Upstream summary: Radicale reports: The multifilesystem backend allows access to arbitrary files on all platforms. Prevent regex injection in rights management. Table […]

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Alpine Linux edge — seatd — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — seatd — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 0.6.2-r0 📖 ~4 min read  •  Source: Alpine secdb entry — seatd 0.6.2-r0 Related CVEs: CVE-2021-41387 Upstream summary: Alpine community repository for vedge ships seatd 0.6.2-r0 which addresses CVE-2021-41387. Table of contents Symptom & Impact Environment […]

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

FreeBSD 13 — irssi-devel — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 10 May 2022 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: irssi — multiple vulnerabilities Related CVEs: CVE-2010-1155 CVE-2010-1156 Upstream summary: Two vulnerabilities have found in irssi. The first issue could allow man-in-the-middle attacks due to a missing comparison of SSL […]

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Common Problems 120608

Debian 11 – time synchronization fails causing TLS and auth errors

🟠 High   ⏱ 5–30 min  Last verified: 10 May 2022 Affected versions: Debian 11 📖 ~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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FreeBSD 12 — py37-Scrapy — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — py37-Scrapy — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 10 May 2022 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: py-Scrapy — DoS vulnerability Related CVEs: CVE-2017-14158 CVE-2022-0577 Upstream summary: kmike and nramirezuy report: Scrapy 1.4 allows remote attackers to cause a denial of service (memory consumption) via large files […]

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Gentoo Linux — dev-util/schroot — vulnerability — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — dev-util/schroot — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202210-11 Related CVEs: CVE-2022-2787 Upstream summary: schroot is unecessarily permissive in rules regarding chroot and session names. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step […]

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FreeBSD 13 — dropbear — multiple vulnerabilities (14 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — dropbear — multiple vulnerabilities (14 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 10 May 2022 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: Privoxy — Multiple vulnerabilities (memory leak, XSS) Related CVEs: CVE-2012-0920 CVE-2013-4421 CVE-2013-4434 CVE-2016-3116 CVE-2016-7406 CVE-2016-7407 CVE-2016-7408 CVE-2016-7409  +6 more Upstream summary: Privoxy reports: cgi_error_no_template(): Encode the template name to prevent […]

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FreeBSD 13 — p5-UI-Dialog — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — p5-UI-Dialog — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 10 May 2022 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: p5-UI-Dialog — shell command execution vulnerability Related CVEs: CVE-2008-7315 Upstream summary: Matthijs Kooijman reports: It seems that the whiptail, cdialog and kdialog backends apply some improper escaping in their shell […]

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