Logging Monitoring

Debian 13 — lightdm-gtk-greeter — vulnerability — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — lightdm-gtk-greeter — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 3 November 2025 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2014-0979 Upstream summary: The start_authentication function in lightdm-gtk-greeter.c in LightDM GTK+ Greeter before 1.7.1 does not properly handle the return value from the lightdm_greeter_get_authentication_user function, which allows local […]

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Common Problems 116535

Ubuntu 24.04 LTS – Bluetooth adapter not detected – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 3 November 2025 Affected versions: Ubuntu 24.04 LTS 📖 ~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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Debian 13 — boinc — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — boinc — multiple vulnerabilities (6 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 3 November 2025 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2009-0126 CVE-2011-5280 CVE-2013-2018 CVE-2013-2019 CVE-2013-2298 CVE-2013-7386 Upstream summary: The decrypt_public function in lib/crypt.cpp in the client in Berkeley Open Infrastructure for Network Computing (BOINC) 6.2.14 and 6.4.5 does […]

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Debian 13 — nanopb — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — nanopb — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 3 November 2025 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-26243 CVE-2021-21401 CVE-2024-53984 Upstream summary: Nanopb is a small code-size Protocol Buffers implementation. In Nanopb before versions 0.4.4 and 0.3.9.7, decoding specifically formed message can leak memory if […]

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Common Problems 111103

Windows Server 2025 — DISM mount operation fails leaving stuck mount point — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 3 November 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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How to Capture Packets with tcpdump on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Capture Packets with tcpdump on Debian 13

Introduction Deploying capture packets with tcpdump 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 registered […]

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How to Secure Nginx with Let's Encrypt SSL on Ubuntu 24.04 — step-by-step Linux tutorial on Progressive Robot

How to Install Nginx on Ubuntu 24.04

Nginx is a high-performance web server and reverse proxy widely used in production. This guide installs and configures Nginx on Ubuntu 24.04 LTS and enables it to serve content over HTTP. Tested and valid on: Ubuntu 24.04 LTS Prerequisites Ubuntu 24.04 LTS server A user with sudo privileges UFW firewall configured Step 1 – Update […]

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AlmaLinux 8 — pytest — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — pytest — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2025:23530 Related CVEs: CVE-2024-11168 CVE-2024-5642 CVE-2024-9287 CVE-2025-0938 CVE-2025-4138 CVE-2025-4330 CVE-2025-4435 CVE-2025-4516  +12 more Upstream summary: Python is an interpreted, interactive, object-oriented programming language, which includes modules, classes, exceptions, very high level dynamic […]

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Ubuntu 16.04 — modsecurity-apache — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — modsecurity-apache — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 3 November 2025 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7567-1 Related CVEs: CVE-2025-47947 CVE-2025-48866 CVE-2021-42717 CVE-2022-48279 CVE-2023-24021 Upstream summary: Simon Studer discovered that ModSecurity incorrectly handled certain JSON objects. An attacker could possibly use this issue to cause a […]

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Ubuntu 16.04 — google-guest-agent — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — google-guest-agent — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 3 November 2025 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7956-1 Related CVEs: CVE-2025-58181 CVE-2024-45337 Upstream summary: Jakub Ciolek discovered that the Go Cryptography module included in Google Guest Agent did not validate GSSAPI authentication requests during SSH operations. An […]

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