Security Hardening

Ubuntu 14.04 — libgcrypt11 — multiple vulnerabilities (9 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 14.04

Ubuntu 14.04 — libgcrypt11 — multiple vulnerabilities (9 CVEs) — patch and remediation guide

  • October 12, 2019
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 12 October 2019 Affected versions: Ubuntu 14.04 (trusty) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4236-3 Related CVEs: CVE-2019-13627 CVE-2018-0495 CVE-2017-7526 CVE-2017-9526 CVE-2016-6313 CVE-2015-7511 CVE-2014-3591 CVE-2015-0837  +1 more Upstream summary: USN-4236-1 fixed a vulnerability in Libgcrypt. This update provides the corresponding update for Ubuntu 12.04 […]

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Ubuntu 18.04 — gnome-shell — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — gnome-shell — vulnerability — patch and remediation guide

  • October 12, 2019
  • Linux
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🟢 Low   ⏱ 5–15 min  Last verified: 12 October 2019 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-3966-1 Related CVEs: CVE-2019-3820 Upstream summary: It was discovered that the GNOME Shell incorrectly handled certain keyboard inputs. An attacker could possibly use this issue to invoke keyboard shortcuts, and […]

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Common Problems 115390

Yum Lock Held by Another Process on RHEL 7

🟡 Medium   ⏱ 5–30 min  Last verified: 11 October 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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How to Set Up Varnish Cache on SLES 12 — step-by-step SUSE Linux Enterprise 12 tutorial on Progressive Robot

How to Set Up Varnish Cache on SLES 12

Introduction This tutorial covers How to Set Up Varnish Cache on SLES 12 on SLES 12. SLES 12 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Prerequisites Ensure your SLES 12 system is up to date: zypper […]

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FreeBSD 12 — ruby+pthreads+oniguruma — multiple vulnerabilities (9 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — ruby+pthreads+oniguruma — multiple vulnerabilities (9 CVEs) — patch and remediation guide

  • October 11, 2019
  • BSD
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🟡 Medium   ⏱ 10–30 min  Last verified: 11 October 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: ruby — UTF-7 encoding XSS vulnerability in WEBrick Related CVEs: CVE-2006-5467 CVE-2006-6303 CVE-2008-1447 CVE-2008-2726 CVE-2008-3655 CVE-2008-3656 CVE-2008-3905 CVE-2009-1904  +1 more Upstream summary: The official ruby site reports: WEBrick have had […]

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How to Set Up PostgreSQL via AIX Toolbox on IBM AIX 7.1 — step-by-step IBM AIX 7.1 tutorial on Progressive Robot

How to Set Up PostgreSQL via AIX Toolbox on IBM AIX 7.1

  • October 11, 2019
  • IBM AIX
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Introduction IBM AIX 7.1 is the latest release of IBM’s enterprise-grade UNIX operating system, running on IBM Power Systems hardware. Known for its reliability, security, and performance in mission-critical environments, AIX 7.1 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to set up postgresql via aix toolbox on ibm aix […]

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FreeBSD 12 — postfix-policyd-weight — security advisory — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — postfix-policyd-weight — security advisory — patch and remediation guide

  • October 11, 2019
  • BSD
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🟢 Low   ⏱ 5–15 min  Last verified: 11 October 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: postfix-policyd-weight — working directory symlink vulnerability Upstream summary: postfix-policyd-weight does not check for symlink for its working directory. If the working directory is not already setup by the super root, […]

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How to Configure a Forest Trust in Active Directory on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Configure a Forest Trust in Active Directory on Windows Server 2012 R2

How to Configure a Forest Trust in Active Directory on Windows Server 2012 R2 A forest trust is a transitive trust between two Active Directory forests that enables seamless authentication and resource access across forest boundaries. Unlike external trusts (which connect individual domains), a forest trust extends to all domains in both forests, allowing any […]

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How to Set Up SLES 15 in Oracle Cloud Infrastructure — step-by-step SUSE Linux Enterprise 15 tutorial on Progressive Robot

How to Set Up SLES 15 in Oracle Cloud Infrastructure

Introduction This tutorial covers How to Set Up SLES 15 in Oracle Cloud Infrastructure on SLES 15. SLES 15 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Prerequisites Ensure your SLES 15 system is up to date: […]

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openSUSE Tumbleweed — libqt4 — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — libqt4 — multiple vulnerabilities (8 CVEs) — patch and remediation guide

  • October 11, 2019
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory SUSE-SR:2011:002 (see also SUSE bugzilla) Related CVEs: CVE-2009-0945 CVE-2011-3193 CVE-2011-3922 CVE-2013-0254 CVE-2015-1858 CVE-2015-1859 CVE-2012-6093 CVE-2014-0190 Upstream summary: Array index error in the insertItemBefore method in WebKit, as used in Apple Safari before […]

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