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AlmaLinux 8 — scl-utils — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — scl-utils — 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-2022:1959 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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How to Set Up Istio Service Mesh on CentOS Stream 9 — step-by-step CentOS Stream 9 tutorial on Progressive Robot

How to Set Up Istio Service Mesh on CentOS Stream 9

Introduction CentOS Stream 9 ships with a stable, security-hardened base that makes deploying set up istio service mesh on centos stream 9 both straightforward and auditable. This tutorial covers the complete procedure for how to Set Up Istio Service Mesh on CentOS Stream 9, including dnf module streams where applicable, systemd unit management, and the […]

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Common Problems 116919

Ubuntu 22.04 LTS – apt update fails due to expired repository Release file

🟡 Medium   ⏱ 5–30 min  Last verified: 25 April 2022 Affected versions: Ubuntu 22.04 LTS Ubuntu 22.04 Ubuntu 22.04.4 📖 ~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 […]

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FreeBSD 13 — tnef — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — tnef — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 April 2022 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: tnef — An attacker may be able to write to the victim's .ssh/authorized_keys file via an e-mail message Related CVEs: CVE-2017-6307 CVE-2017-6308 CVE-2017-6309 CVE-2017-6310 CVE-2019-18849 Upstream summary: [email protected] reports: In […]

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Common Problems 115587

firewalld Rich Rules Override Expected Service Access

🟡 Medium   ⏱ 5–30 min  Last verified: 25 April 2022 📖 ~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 13 — ricochet — security advisory — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — ricochet — security advisory — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 April 2022 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: ricochet — information disclosure Upstream summary: special reports: By sending a nickname with some HTML tags in a contact request, an attacker could cause Ricochet to make network requests without […]

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How to Use AIX Volume Shadow Copy on IBM AIX 7.1 — step-by-step IBM AIX 7.1 tutorial on Progressive Robot

How to Use AIX Volume Shadow Copy on IBM AIX 7.1

Introduction IBM AIX 7.1 is the latest release of IBM’s enterprise-grade UNIX operating system, running on IBM Power Systems hardware. Known for its reliability, security, and performance in mission-critical environments, AIX 7.1 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to use aix volume shadow copy on ibm aix 7.1 […]

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Debian 11 — quassel — multiple vulnerabilities (14 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — quassel — multiple vulnerabilities (14 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 April 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2008-5657 CVE-2010-3443 CVE-2011-3354 CVE-2013-4422 CVE-2013-6404 CVE-2014-8483 CVE-2015-2778 CVE-2015-2779  +6 more Upstream summary: CRLF injection vulnerability in Quassel Core before 0.3.0.3 allows remote attackers to spoof IRC messages as […]

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How to Install and Configure IIS on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Install and Configure IIS on Windows Server 2012 R2

How to Install and Configure IIS on Windows Server 2012 R2 Internet Information Services (IIS) 8.5 ships with Windows Server 2012 R2 and is the most widely deployed web server on the Microsoft platform. IIS 8.5 includes significant improvements over earlier versions: dynamic IP restrictions, enhanced logging, ETW tracing for real-time diagnostics, application initialisation (warm-up), […]

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How to Upgrade from Debian 10 to Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Upgrade from Debian 10 to Debian 11

Introduction Deploying upgrade from debian 10 to debian 11 on a Debian 11 Bullseye machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. Prerequisites Ensure Debian […]

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