Security Hardening

How to Set Up Docker Registry with Authentication on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Set Up Docker Registry with Authentication on Debian 9

Introduction Debian 9 Stretch is built around the ethos of stability and free software. Setting up set up docker registry with authentication on debian 9 on Stretch leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Stretch freeze. Follow each step […]

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Amazon Linux 2 — libwebp — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — libwebp — multiple vulnerabilities (7 CVEs) — 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 ALAS2-2021-1676 Related CVEs: CVE-2018-25011 CVE-2020-36328 CVE-2020-36329 CVE-2018-25013 CVE-2018-25014 CVE-2020-36330 CVE-2020-36331 Upstream summary: A flaw was found in libwebp. A heap-based buffer overflow was found in PutLE16(). The highest threat from […]

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FreeBSD 12 — linux-firefox-devel — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — linux-firefox-devel — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 26 February 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: Mozilla — multiple vulnerabilities Related CVEs: CVE-2006-3113 CVE-2006-3677 CVE-2006-3801 CVE-2006-3802 CVE-2006-3803 CVE-2006-3804 CVE-2006-3805 CVE-2006-3806  +12 more Upstream summary: The Mozilla Project reports: MFSA 2011-12 Miscellaneous memory safety hazards MFSA 2011-13 […]

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How to Set Up Automatic Security Updates on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Set Up Automatic Security Updates on Debian 10

Introduction How to Set Up Automatic Security Updates on Debian 10 is a fundamental operation for any administrator maintaining a Debian 10 Buster server. Debian 10 Buster ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from Debian […]

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Common Problems 115565

RHEL 7 tuned Profile Causes High Latency

🟡 Medium   ⏱ 5–30 min  Last verified: 25 February 2020 Affected versions: RHEL 7 📖 ~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 — postgresql10-server — multiple vulnerabilities (16 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — postgresql10-server — multiple vulnerabilities (16 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 February 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: PostgreSQL Server — execute arbitrary SQL code as DBA user Related CVEs: CVE-2017-15098 CVE-2017-15099 CVE-2018-1052 CVE-2018-1053 CVE-2018-1058 CVE-2018-10915 CVE-2018-10925 CVE-2018-16850  +8 more Upstream summary: The PostgreSQL project reports: Confine additional […]

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Common Problems 115498

RHEL 7 systemctl Restart Hangs Due to ExecStop Timeout

🟡 Medium   ⏱ 5–30 min  Last verified: 25 February 2020 📖 ~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 113082

Windows Server 2016 — Uneven traffic distribution across NLB nodes due to NIC offload inconsistency — Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 25 February 2020 Affected versions: Windows Server 2016 📖 ~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 Errors […]

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How to Configure Network Bridging on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Configure Network Bridging on Debian 10

Introduction How to Configure Network Bridging on Debian 10 is a fundamental operation for any administrator maintaining a Debian 10 Buster server. Debian 10 Buster ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from Debian 10. This […]

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

FreeBSD 12 — gallery — multiple vulnerabilities (17 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 February 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: gallery — multiple vulnerabilities Related CVEs: CVE-2004-0522 CVE-2004-1106 CVE-2004-2124 CVE-2005-0219 CVE-2005-0220 CVE-2005-0221 CVE-2005-0222 CVE-2005-3251  +9 more Upstream summary: Red Hat Security Response Team reports: Gallery upstream has released 3.0.9 version, […]

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