Security Hardening

How to Configure Windows Server 2019 for Azure Hybrid Benefit — step-by-step Windows Server 2019 tutorial on Progressive Robot

How to Configure Windows Server 2019 for Azure Hybrid Benefit

How to Configure Windows Server 2019 for Azure Hybrid Benefit Azure Hybrid Benefit is a licensing benefit that allows organizations to use their existing on-premises Windows Server licenses with active Software Assurance (SA) to run Windows Server virtual machines on Azure at a reduced cost. For Windows Server 2019 environments, this benefit can dramatically reduce […]

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Gentoo Linux — app-arch/lrzip — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — app-arch/lrzip — multiple vulnerabilities (8 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202005-01 Related CVEs: CVE-2017-8842 CVE-2017-8843 CVE-2017-8844 CVE-2017-8845 CVE-2017-8846 CVE-2017-8847 CVE-2017-9928 CVE-2017-9929 Upstream summary: Multiple vulnerabilities have been discovered in Long Range ZIP. Please review the CVE identifiers referenced below for details. Table […]

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

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

🟢 Low   ⏱ 5–15 min  Last verified: 2 September 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: www/mod_security — NULL pointer dereference DoS Related CVEs: CVE-2013-1915 CVE-2013-2765 Upstream summary: SecurityFocus reports: When ModSecurity receives a request body with a size bigger than the value set by the […]

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FreeBSD 12 — enscript-letter — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — enscript-letter — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 2 September 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: enscript — arbitrary code execution vulnerability Related CVEs: CVE-2004-1184 CVE-2004-1185 CVE-2004-1186 CVE-2008-3863 CVE-2008-4306 Upstream summary: Ulf Harnhammar of Secunia Research reports: Stack-based buffer overflow in the read_special_escape function in src/psgen.c […]

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Ubuntu 16.04 — squirrelmail — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — squirrelmail — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 2 September 2019 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4669-1 Related CVEs: CVE-2019-12970 Upstream summary: It was discovered that a cross-site scripting (XSS) vulnerability in SquirrelMail allows remote attackers to use malicious script content from HTML e-mail to execute […]

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Arch Linux — jupyter-notebook — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — jupyter-notebook — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-201812-1 Related CVEs: CVE-2018-19352 CVE-2018-19351 Upstream summary: Type: cross-site scripting. Status: Fixed. Affected: 5.5.0-1. Fixed in: 5.7.2-1. Group: AVG-820. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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Common Problems 115548

RHEL 7 systemctl Cannot Reload Daemon After Unit Edit

🟡 Medium   ⏱ 5–30 min  Last verified: 1 September 2019 📖 ~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 & Cross-Refs References & Further […]

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Common Problems 115108

RHEL 8 Chrony Unsynchronized After Virtual Machine Resume

🟡 Medium   ⏱ 5–30 min  Last verified: 1 September 2019 📖 ~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 & Cross-Refs References & Further […]

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FreeBSD 12 — linux-c6-devtools — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — linux-c6-devtools — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 1 September 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: glibc — gethostbyname buffer overflow Related CVEs: CVE-2015-0235 Upstream summary: Robert Krátký reports: GHOST is a 'buffer overflow' bug affecting the gethostbyname() and gethostbyname2() function calls in the glibc library. […]

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