March 2021 - Page 56 of 63

FreeBSD 12 — py27-yaml — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — py27-yaml — multiple vulnerabilities (2 CVEs) — patch and remediation guide

  • March 4, 2021
  • BSD
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🟢 Low   ⏱ 5–15 min  Last verified: 4 March 2021 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: py-yaml — FullLoader (still) exploitable for arbitrary command execution Related CVEs: CVE-2017-18342 CVE-2020-1747 Upstream summary: Riccardo Schirone (https://github.com/ret2libc) reports: In FullLoader python/object/new constructor, implemented by construct_python_object_apply, has support for setting […]

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Common Problems 115440

Stale PID File Prevents Service Startup

🟡 Medium   ⏱ 5–30 min  Last verified: 4 March 2021 📖 ~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 VLANs on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Set Up VLANs on Oracle Linux 8

Introduction Setting up set up vlans on oracle linux 8 on a Oracle Linux 8 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Set Up VLANs on Oracle Linux 8, with all the commands you need, the SELinux and firewalld considerations to keep in […]

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Ubuntu 18.04 — linux-gke-5.0 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — linux-gke-5.0 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

  • March 4, 2021
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 4 March 2021 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4713-2 Related CVEs: CVE-2020-28374 CVE-2020-16119 CVE-2020-16120 CVE-2020-14386 CVE-2020-12771 CVE-2019-12380 CVE-2019-16089 CVE-2019-19036  +12 more Upstream summary: It was discovered that the LIO SCSI target implementation in the Linux kernel performed insufficient […]

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Common Problems 113549

Windows Server 2012 R2 – Security event log overflow causing dropped audit events – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 4 March 2021 Affected versions: Windows Server 2012 R2 📖 ~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 […]

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openSUSE Tumbleweed — abcm2ps — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — abcm2ps — multiple vulnerabilities (2 CVEs) — patch and remediation guide

  • March 4, 2021
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2022:0100-1 (see also SUSE bugzilla) Related CVEs: CVE-2021-32434 CVE-2021-32435 Upstream summary: abcm2ps v8.14.11 was discovered to contain an out-of-bounds read in the function calculate_beam at draw.c. Table of contents Symptom & Impact […]

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How to Use AIX System Backup with mksysb on IBM AIX 7.1 — step-by-step IBM AIX 7.1 tutorial on Progressive Robot

How to Use AIX System Backup with mksysb on IBM AIX 7.1

  • March 4, 2021
  • 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 use aix system backup with mksysb on ibm aix […]

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Ubuntu 18.04 — wayland — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — wayland — vulnerability — patch and remediation guide

  • March 4, 2021
  • Linux
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🟢 Low   ⏱ 5–15 min  Last verified: 4 March 2021 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5614-1 Related CVEs: CVE-2021-3782 Upstream summary: It was discovered that Wayland incorrectly handled reference counting certain objects. An attacker could use this issue to cause Wayland to crash, resulting in […]

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Как настроить сервер OpenVPN в Ubuntu 16.04 — step-by-step Linux tutorial on Progressive Robot

Как настроить сервер OpenVPN в Ubuntu 16.04

  • March 4, 2021
  • Linux
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Хотите иметь безопасный и защищённый доступ в Интернет с вашего смартфона или ноутбука при подключении к незащищённой сети через WiFi отеля или кафе? Виртуальная частная сеть (Virtual Private Network, VPN) позволяет…

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