Security Hardening

Amazon Linux 2023 — java-24-amazon-corretto — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2023

Amazon Linux 2023 — java-24-amazon-corretto — multiple vulnerabilities (7 CVEs) — patch and remediation guide

  • August 12, 2025
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2023 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2023-2025-1098 Related CVEs: CVE-2025-30749 CVE-2025-30754 CVE-2025-50059 CVE-2025-50106 CVE-2025-21587 CVE-2025-30691 CVE-2025-30698 Upstream summary: Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java […]

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How to Push Images to Docker Hub from Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Push Images to Docker Hub from Debian 13

  • August 12, 2025
  • Linux
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Introduction How to Push Images to Docker Hub from Debian 13 is a fundamental operation for any administrator maintaining a Debian 13 Trixie server. Debian 13 Trixie 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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Debian 13 — ocp — vulnerability — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — ocp — vulnerability — patch and remediation guide

  • August 12, 2025
  • Linux
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🟢 Low   ⏱ 5–15 min  Last verified: 12 August 2025 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2006-4046 Upstream summary: Multiple stack-based buffer overflows in Open Cubic Player 2.6.0pre6 and earlier for Windows, and 0.1.10_rc5 and earlier on Linux/BSD, allow remote attackers to execute arbitrary […]

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Ubuntu 16.04 — djvulibre — multiple vulnerabilities (13 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — djvulibre — multiple vulnerabilities (13 CVEs) — patch and remediation guide

  • August 12, 2025
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 12 August 2025 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8054-1 Related CVEs: CVE-2025-53367 CVE-2021-46312 CVE-2021-3630 CVE-2021-32490 CVE-2021-32491 CVE-2021-32492 CVE-2021-32493 CVE-2021-3500  +5 more Upstream summary: It was discovered that DjVuLibre could be forced to execute a division by zero in […]

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openSUSE Tumbleweed — iputils — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — iputils — vulnerability — patch and remediation guide

  • August 12, 2025
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2025:15089-1 (see also SUSE bugzilla) Related CVEs: CVE-2025-47268 Upstream summary: ping in iputils before 20250602 allows a denial of service (application error or incorrect data collection) via a crafted ICMP Echo Reply […]

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Common Problems 111074

Windows Server 2025 — SMTP relay port 25 blocked by another service — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 12 August 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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Rocky Linux 8 — php-pecl-rrd — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Rocky Linux 8

Rocky Linux 8 — php-pecl-rrd — multiple vulnerabilities (20 CVEs) — patch and remediation guide

  • August 12, 2025
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Rocky Linux 8 📖 ~4 min read  •  Source: Rocky Linux RXSA RLSA-2026:1412 Related CVEs: CVE-2025-1220 CVE-2025-14177 CVE-2025-14178 CVE-2025-14180 CVE-2025-1735 CVE-2025-6491 CVE-2024-11233 CVE-2024-11234  +12 more Upstream summary: PHP is an HTML-embedded scripting language commonly used with the Apache HTTP Server. Security Fix(es): […]

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Oracle Linux 10 — buildah — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 10

Oracle Linux 10 — buildah — vulnerability — patch and remediation guide (ELSA-2026-3297)

  • August 12, 2025
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 12 August 2025 Affected versions: Oracle Linux 10 📖 ~4 min read  •  Source: ELSA advisory ELSA-2026-3297 Related CVEs: CVE-2025-61726 CVE-2025-61729 CVE-2025-68121 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 Install Perl Modules with cpanm on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Install Perl Modules with cpanm on Debian 13

  • August 12, 2025
  • Linux
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Introduction Deploying install perl modules with cpanm on a Debian 13 Trixie 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 You will need a […]

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Debian 13 — apache2 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — apache2 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

  • August 12, 2025
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 12 August 2025 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2001-1534 CVE-2002-0392 CVE-2002-0654 CVE-2002-0661 CVE-2002-0840 CVE-2002-1156 CVE-2002-1592 CVE-2002-1593  +12 more Upstream summary: mod_usertrack in Apache 1.3.11 through 1.3.20 generates session ID's using predictable information including host IP address, […]

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