Linux

Arch Linux — lib32-gnutls — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — lib32-gnutls — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-201707-6 Related CVEs: CVE-2017-7507 CVE-2016-7444 Upstream summary: Type: denial of service. Status: Fixed. Affected: 3.4.15-1. Fixed in: 3.5.13-1. Group: AVG-295. Table of contents Symptom & Impact Environment & Reproduction Root […]

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SLES 12 — libtomcrypt0 — vulnerability — patch and remediation guide — diagnosis and fix on SLES 12

SLES 12 — libtomcrypt0 — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 18 June 2019 Affected versions: SLES 12 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2019:2808-1 (see also SUSE bugzilla) Related CVEs: CVE-2019-17362 Upstream summary: In LibTomCrypt through 1.18.2, the der_decode_utf8_string function (in der_decode_utf8_string.c) does not properly detect certain invalid UTF-8 sequences. This allows context-dependent attackers to […]

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Common Problems 118926

Ubuntu 14.04 LTS – unattended-upgrades causes sustained CPU usage – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 17 June 2019 Affected versions: Ubuntu 14.04 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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Common Problems 118552

Ubuntu 16.04 Apache2 Fails to Start Because Port 80 Is In Use

🟡 Medium   ⏱ 5–30 min  Last verified: 17 June 2019 📖 ~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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Ubuntu 14.04 — vlc — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 14.04

Ubuntu 14.04 — vlc — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 17 June 2019 Affected versions: Ubuntu 14.04 (trusty) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4805-1 Related CVEs: CVE-2017-10699 CVE-2018-11529 Upstream summary: It was discovered that VLC mishandled certain crafted media files. An attacker could use this vulnerability to cause a denial of service (crash) […]

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Arch Linux — libxslt — vulnerability — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — libxslt — vulnerability — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-201703-5 Related CVEs: CVE-2017-5029 Upstream summary: Type: arbitrary code execution. Status: Fixed. Affected: 1.1.29+23+geb1030d-1. Fixed in: 1.1.29+41+gdf5330d1-1. Group: AVG-195. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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SLES 12 — mercurial — multiple vulnerabilities (14 CVEs) — patch and remediation guide — diagnosis and fix on SLES 12

SLES 12 — mercurial — multiple vulnerabilities (14 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 17 June 2019 Affected versions: SLES 12 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2017:1558-1 (see also SUSE bugzilla) Related CVEs: CVE-2017-9462 CVE-2019-3902 CVE-2014-9462 CVE-2016-3068 CVE-2016-3069 CVE-2016-3105 CVE-2016-3630 CVE-2017-1000116  +6 more Upstream summary: In Mercurial before 4.1.3, "hg serve –stdio" allows remote authenticated users to launch […]

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How To Use Gitolite to Control Access to a Git Server on an Ubuntu 12.04 VPS — step-by-step Linux tutorial on Progressive Robot

How To Use Gitolite to Control Access to a Git Server on an Ubuntu 12.04 VPS

Git is a very popular distributed version control system. When working on multiple projects in git with different collaborators, you need to control who has access to what. Gitolite is an access control layer that can be implemented on top of git to provide that level of control. In this guide, we will discuss how to install and configure gitolite on an Ubuntu 12.04 system.

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How to Manage Systemd Services and Units on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Manage Systemd Services and Units on RHEL 7

How to Manage Systemd Services and Units on RHEL 7 Red Hat Enterprise Linux 7 made a significant shift from the traditional SysVinit and Upstart initialization systems to systemd as the default init system. Systemd is a comprehensive system and service manager that controls how services start, stop, and interact with the rest of the […]

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How to Configure Nginx as a Reverse Proxy on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Configure Nginx as a Reverse Proxy on RHEL 8

Nginx is a high-performance web server that also excels as a reverse proxy, sitting in front of application servers and forwarding client requests to backend services running on internal ports. Using Nginx as a reverse proxy on RHEL 8 allows you to serve Node.js, Python, Java, or any HTTP-based application behind a clean public-facing endpoint […]

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