Security Hardening

FreeBSD 12 — putty — multiple vulnerabilities (13 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — putty — multiple vulnerabilities (13 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 13 December 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: putty — multiple security vulnerabilities Related CVEs: CVE-2005-0467 CVE-2011-4607 CVE-2013-4206 CVE-2013-4207 CVE-2013-4208 CVE-2013-4852 CVE-2015-2157 CVE-2015-5309  +5 more Upstream summary: Simon Tatham reports: These features are new in PuTTY 0.84: Security […]

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Ubuntu 16.04 — gvfs — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — gvfs — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 13 December 2019 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4053-1 Related CVEs: CVE-2019-12447 CVE-2019-12448 CVE-2019-12449 CVE-2019-12795 Upstream summary: It was discovered that GVfs incorrectly handled the admin backend. Files created or moved by the admin backend could end up […]

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How to Install Pulumi on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Install Pulumi on FreeBSD 12

Introduction FreeBSD 12 is a UNIX-derived operating system renowned for its network stack performance, ZFS integration, and Jail isolation primitives. Setting up install pulumi on freebsd 12 on FreeBSD 12 follows the rc.conf/service(8) paradigm rather than systemd, which means enabling a service and configuring its startup options are done differently from any Linux distribution. This […]

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Oracle Linux 8 — ruby:2.5 — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — ruby:2.5 — vulnerability — patch and remediation guide (ELSA-2019-1972)

🟠 High   ⏱ 15–60 min  Last verified: 13 December 2019 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2019-1972 Related CVEs: CVE-2019-8324 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

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openSUSE Tumbleweed — graphviz — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — graphviz — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2020:1294-1 (see also SUSE bugzilla) Related CVEs: CVE-2018-10196 CVE-2019-11023 Upstream summary: NULL pointer dereference vulnerability in the rebuild_vlists function in lib/dotgen/conc.c in the dotgen library in Graphviz 2.40.1 allows remote attackers to […]

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FreeBSD 12 — mozilla — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — mozilla — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 13 December 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: mozilla — multiple vulnerabilities Related CVEs: CVE-2004-0597 CVE-2004-0598 CVE-2004-0599 CVE-2004-0717 CVE-2004-0718 CVE-2004-0721 CVE-2004-0722 CVE-2004-0757  +12 more Upstream summary: [email protected] reports: Memory safety bugs present in Firefox 134 and Thunderbird 134. […]

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Debian 10 — imagemagick — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — imagemagick — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 13 December 2019 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-7175 CVE-2019-13300 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 Manage Disk Encryption with LUKS and cryptsetup on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Manage Disk Encryption with LUKS and cryptsetup on RHEL 7

How to Manage Disk Encryption with LUKS and cryptsetup on RHEL 7 Protecting sensitive data at rest is a fundamental security requirement for any enterprise system. Linux Unified Key Setup (LUKS) is the standard disk encryption specification on Linux, and cryptsetup is the command-line tool used to create and manage LUKS-encrypted volumes on RHEL 7. […]

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Common Problems 119048

Ubuntu 14.04 LTS High CPU by kswapd0 and Severe Memory Thrashing

🟡 Medium   ⏱ 5–30 min  Last verified: 12 December 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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Common Problems 118575

Apache VirtualHost Misconfiguration on Ubuntu 16.04

🟡 Medium   ⏱ 5–30 min  Last verified: 12 December 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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