March 2021 - Page 16 of 69

Debian 10 — haproxy — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — haproxy — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-19330 CVE-2020-11100 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 Configure vsftpd to Use SSL/TLS on an Ubuntu VPS — step-by-step Linux tutorial on Progressive Robot

How To Configure vsftpd to Use SSL/TLS on an Ubuntu VPS

FTP was a popular way to transfer to files between local and remote computers. Although its use has fallen out of favor due to security concerns, there are some steps that you can take to increase the security of this protocol. In this guide, we will demonstrate how to configure the vsftpd server to user SSL/TLS connections to encrypt data transfer.

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How to Install containerd as a Container Runtime on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Install containerd as a Container Runtime on RHEL 9

containerd is a high-performance, industry-standard container runtime that implements the Open Container Initiative (OCI) specification. While Docker uses containerd internally as its core container lifecycle manager, containerd can also run standalone as a Kubernetes container runtime — this is the default runtime for most managed Kubernetes services (EKS, GKE, AKS) and the recommended runtime for […]

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openSUSE Tumbleweed — apache2-mod_auth_mellon — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — apache2-mod_auth_mellon — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2021:2912-1 (see also SUSE bugzilla) Related CVEs: CVE-2021-3639 Upstream summary: A flaw was found in mod_auth_mellon where it does not sanitize logout URLs properly. This issue could be used by an attacker […]

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Oracle Linux 8 — bind security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — bind security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2022-2092)

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-2092 Related CVEs: CVE-2021-25219 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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Common Problems 115576

RHEL 7 systemctl Target Misconfiguration Boots into Rescue Mode

🟠 High   ⏱ 5–30 min  Last verified: 20 May 2026 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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Common Problems 114960

Chrony time synchronization not working

🟡 Medium   ⏱ 5–30 min  Last verified: 19 May 2026 📖 ~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 113507

Windows Server 2012 R2 — WSUS SUSDB index bloat causes timeouts on console and client scans — Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 04 June 2027 Affected versions: Windows Server 2012 R2 📖 ~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 […]

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Common Problems 113022

Windows Server 2016 — IPsec site-to-site tunnel renegotiation fails after certificate renewal on RRAS — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 19 May 2026 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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