Security Hardening

Ubuntu 14.04 — grub2-signed — multiple vulnerabilities (10 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 14.04

Ubuntu 14.04 — grub2-signed — multiple vulnerabilities (10 CVEs) — patch and remediation guide

  • May 18, 2020
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 18 May 2020 Affected versions: Ubuntu 14.04 (trusty) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4432-2 Related CVEs: https://launchpad.net/bugs/1889556 https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/GRUB2SecureBootBypass CVE-2020-10713 CVE-2020-14308 CVE-2020-14309 CVE-2020-14310 CVE-2020-14311 CVE-2020-15705  +2 more Upstream summary: USN-4432-1 fixed vulnerabilities in GRUB2 affecting Secure Boot environments. Unfortunately, the update introduced regressions for […]

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Arch Linux — graphicsmagick — multiple vulnerabilities (14 CVEs) — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — graphicsmagick — multiple vulnerabilities (14 CVEs) — patch and remediation guide

  • May 18, 2020
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-201801-7 Related CVEs: CVE-2017-16547 CVE-2017-15930 CVE-2017-14165 CVE-2017-13777 CVE-2017-13776 CVE-2017-13134 CVE-2017-13066 CVE-2017-13065  +6 more Upstream summary: Type: multiple issues. Status: Fixed. Affected: 1.3.26-3. Fixed in: 1.3.27-1. Group: AVG-355. Table of contents […]

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Common Problems 121014

Debian 10 – boot is delayed by systemd-networkd-wait-online timeout

  • May 17, 2020
  • Linux
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🟡 Medium   ⏱ 5–30 min  Last verified: 17 May 2020 Affected versions: Debian 10 📖 ~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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FreeBSD 12 — OpenEXR — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — OpenEXR — multiple vulnerabilities (7 CVEs) — patch and remediation guide

  • May 17, 2020
  • BSD
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🟡 Medium   ⏱ 10–30 min  Last verified: 17 May 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: OpenEXR — multiple remote code execution and denial of service vulnerabilities Related CVEs: CVE-2017-9110 CVE-2017-9111 CVE-2017-9112 CVE-2017-9113 CVE-2017-9114 CVE-2017-9115 CVE-2017-9116 Upstream summary: Brandon Perry reports: [There] is a zip file […]

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

openSUSE Tumbleweed — nut — vulnerability — patch and remediation guide

  • May 17, 2020
  • 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-SU-2012:1077-1 (see also SUSE bugzilla) Related CVEs: CVE-2012-2944 Upstream summary: Buffer overflow in the addchar function in common/parseconf.c in upsd in Network UPS Tools (NUT) before 2.6.4 allows remote attackers to execute […]

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How to Configure GitHub Actions Self-Hosted Runner on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Configure GitHub Actions Self-Hosted Runner on FreeBSD 12

Introduction This guide explains how to Configure GitHub Actions Self-Hosted Runner on FreeBSD 12 on FreeBSD 12. FreeBSD uses the pkg(8) binary package manager, rc.conf(5) for service startup configuration, and pf(4) as its primary packet filter. There is no SELinux or AppArmor — instead, FreeBSD provides the MAC (Mandatory Access Control) framework and Capsicum for […]

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Common Problems 119014

Ubuntu 14.04 LTS Package Install Blocked by dpkg Lock

  • May 17, 2020
  • Linux
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🟡 Medium   ⏱ 5–30 min  Last verified: 17 May 2020 📖 ~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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FreeBSD 12 — linux-f10-dbus-glib — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — linux-f10-dbus-glib — vulnerability — patch and remediation guide

  • May 17, 2020
  • BSD
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🟢 Low   ⏱ 5–15 min  Last verified: 17 May 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: dbus-glib — privledge escalation Related CVEs: CVE-2013-0292 Upstream summary: Sebastian Krahmer reports: A privilege escalation flaw was found in the way dbus-glib, the D-Bus add-on library to integrate the standard […]

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

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

  • May 17, 2020
  • BSD
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🟠 High   ⏱ 15–60 min  Last verified: 17 May 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: freerdp — clients using the `/video` command line switch might read uninitialized data Related CVEs: CVE-2020-11017 CVE-2020-11018 CVE-2020-11019 CVE-2020-11038 CVE-2020-11039 CVE-2020-11040 CVE-2020-11041 CVE-2020-11043  +12 more Upstream summary: MITRE reports: All […]

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Common Problems 117498

Ubuntu 20.04 LTS – boot delayed by systemd-networkd-wait-online timeout

  • May 17, 2020
  • Linux
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🟡 Medium   ⏱ 5–30 min  Last verified: 17 May 2020 Affected versions: Ubuntu 20.04 LTS Ubuntu 20.04 Ubuntu 20.04.6 📖 ~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 […]

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