Security Hardening

Ubuntu 16.04 — poppler — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — poppler — multiple vulnerabilities (20 CVEs) — patch and remediation guide

  • July 31, 2025
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 31 July 2025 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7708-1 Related CVEs: CVE-2025-50420 CVE-2025-52886 CVE-2022-27337 CVE-2025-32364 CVE-2025-32365 CVE-2024-56378 CVE-2020-23804 CVE-2022-37050  +12 more Upstream summary: It was discovered that poppler incorrectly handled certain PDF files. An attacker could possibly use […]

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SLES 15 — libtiff5 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — libtiff5 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

  • July 31, 2025
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 31 July 2025 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory SUSE-SR:2011:005 (see also SUSE bugzilla) Related CVEs: CVE-2011-0192 CVE-2015-7554 CVE-2016-9453 CVE-2025-61144 CVE-2009-2285 CVE-2009-2347 CVE-2010-2065 CVE-2010-2067  +12 more Upstream summary: Buffer overflow in Fax4Decode in LibTIFF 3.9.4 and possibly other versions, as used […]

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How to Configure Automatic Security Updates with dnf-automatic on Oracle Linux 10 — step-by-step Oracle Linux 10 tutorial on Progressive Robot

How to Configure Automatic Security Updates with dnf-automatic on Oracle Linux 10

Introduction Oracle Linux 10 ships with a stable, security-hardened base that makes deploying configure automatic security updates with dnf-automatic on oracle linux 10 both straightforward and auditable. This tutorial covers the complete procedure for how to Configure Automatic Security Updates with dnf-automatic on Oracle Linux 10, including dnf module streams where applicable, systemd unit management, […]

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Red Hat Enterprise Linux 9 — qemu-img — vulnerability — patch and remediation guide — diagnosis and fix on Red Hat Enterprise Linux 9

Red Hat Enterprise Linux 9 — qemu-img — vulnerability — patch and remediation guide

  • July 31, 2025
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Red Hat Enterprise Linux 9 📖 ~4 min read  •  Source: Red Hat advisory RHSA RHSA-2026:18772 Related CVEs: CVE-2025-11234 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative […]

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Windows Server 2016 — KB5060999 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Windows Server 2016

Windows Server 2016 — KB5060999 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Windows Server 2016 📖 ~4 min read  •  Source: Microsoft KB5060999 • MSRC update-guide entry Related CVEs: CVE-2025-33070 CVE-2025-32712 CVE-2025-32713 CVE-2025-32714 CVE-2025-32715 CVE-2025-32716 CVE-2025-32718 CVE-2025-32719  +12 more Affected components: Windows Server 2016 Microsoft summary: Use of uninitialized resource in Windows Netlogon allows […]

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Common Problems 111203

Windows Server 2025 — RODC password replication policy blocking credential caching on Server 2025 — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 31 July 2025 Affected versions: Windows Server 2025 📖 ~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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Common Problems 124069

Oracle Linux 10 – multipathd fails to map SAN LUNs during boot – Fix & Prevention

  • July 30, 2025
  • Linux
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🔴 Critical   ⏱ 5–30 min  Last verified: 30 July 2025 Affected versions: Oracle Linux 10 📖 ~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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NetBSD 10.0 — xapian — vulnerability — patch and remediation guide — diagnosis and fix on NetBSD 10.0

NetBSD 10.0 — xapian — vulnerability — patch and remediation guide

  • July 30, 2025
  • BSD
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: NetBSD 10.0 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Related CVEs: CVE-2018-0499 Upstream summary: pkgsrc audit-packages flagged xapian<1.4.6 for vulnerability class 'cross-site-scripting'. Reference: https://nvd.nist.gov/vuln/detail/CVE-2018-0499 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis […]

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How to Set Up NFS on CentOS Stream 10 — step-by-step CentOS Stream 10 tutorial on Progressive Robot

How to Set Up NFS on CentOS Stream 10

  • July 30, 2025
  • CentOS
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Introduction Setting up set up nfs on centos stream 10 on a CentOS Stream 10 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Set Up NFS on CentOS Stream 10, with all the commands you need, the SELinux and firewalld considerations to keep in […]

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Common Problems 124035

Oracle Linux 10 – NetworkManager drops static route after reboot

  • July 30, 2025
  • Linux
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🟡 Medium   ⏱ 5–30 min  Last verified: 30 July 2025 Affected versions: Oracle Linux 10 📖 ~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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