chris

Common Problems 112951

Windows Server 2016 — .NET Cumulative Update Fails with 0x80070643 on Patch Night — Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 17 October 2021 Affected versions: Windows Server 2016 📖 ~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 13 — mozilla-thunderbird — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — mozilla-thunderbird — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 17 October 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: mozilla — multiple vulnerabilities Related CVEs: CAN-2006-0884 CVE-2004-0762 CVE-2004-0765 CVE-2004-0904 CVE-2004-0905 CVE-2004-0908 CVE-2004-0909 CVE-2004-1156  +12 more Upstream summary: The Mozilla Foundation reports of multiple security issues in Firefox, Seamonkey, and […]

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Debian 10 — python-bleach — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — python-bleach — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 17 October 2021 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-6802 CVE-2020-6816 CVE-2021-23980 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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The Docker Ecosystem: An Overview of Containerization — step-by-step Docker tutorial on Progressive Robot

The Docker Ecosystem: An Overview of Containerization

With Docker containerization and service-oriented design, applications can be broken up into manageable, functional components, packaged individually with all of their dependencies, and deployed on irregular architecture easily. In this guide, we will discuss the benefits of containerization and how Docker helps to solve many of the roadblocks that stand in the way of easily moving your application through the development cycle.

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How to Configure HAProxy for HTTP and TCP Load Balancing on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Configure HAProxy for HTTP and TCP Load Balancing on RHEL 8

HAProxy is a battle-tested open-source load balancer and proxy server that can distribute HTTP and raw TCP traffic across multiple backend servers with sub-millisecond overhead. On RHEL 8 it is available directly from the AppStream repository and integrates cleanly with firewalld and SELinux. This guide walks through installing HAProxy, writing a configuration that handles both […]

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Installing and Configuring Graphite and Statsd on an Ubuntu 12.04 VPS — step-by-step Linux tutorial on Progressive Robot

Installing and Configuring Graphite and Statsd on an Ubuntu 12.04 VPS

This tutorial will cover how to set up Graphite and Statsd on your server. Graphite is a graphing library that can be used to plot data-sets in a visually appealing way. Statsd is a program that can collect data on your system. When these programs are combined, you can generate useful graphs that describe the trends of your server.

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FreeBSD 13 — tidy-html — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — tidy-html — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 16 October 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: tidy — heap-buffer-overflow Related CVEs: CVE-2015-5522 CVE-2015-5523 Upstream summary: Geoff McLane reports: tidy is affected by a write out of bounds when processing malformed html files. This issue could be […]

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Oracle Linux 8 — virt:ol security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — virt:ol security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2019-3345)

🟢 Low   ⏱ 5–15 min  Last verified: 16 October 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2019-3345 Related CVEs: CVE-2019-12155 CVE-2019-9755 CVE-2019-9824 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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FreeBSD 13 — go-devel — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — go-devel — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 16 October 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: go — invalid headers are normalized, allowing request smuggling Related CVEs: CVE-2019-16276 Upstream summary: The Go project reports: net/http (through net/textproto) used to accept and normalize invalid HTTP/1.1 headers with […]

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Common Problems 119056

Ubuntu 14.04 LTS – MySQL fails to start after abrupt shutdown – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 16 October 2021 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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