ubuntu

How To Protect WordPress with Fail2Ban on Ubuntu 14.04 — step-by-step Linux tutorial on Progressive Robot

How To Protect WordPress with Fail2Ban on Ubuntu 14.04

  • August 27, 2021
  • Linux
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WordPress is a very robust content-management system (CMS) that is free and open source. Because anyone can comment, create an account, and post on WordPress, many malicious actors have created networks of bots and servers that compromise and spam WordPress sites through brute-force attacks. The tool Fail2ban is useful in preventing unauthorized access to both your Droplet and your WordPress site. It notes suspicious or repeated login failures and proactively bans those IPs by modifying firewall

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Common Problems 117597

Ubuntu 20.04 LTS – multipathd causes delayed boot on single-disk VM – Fix & Prevention

  • August 26, 2021
  • Linux
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🟡 Medium   ⏱ 5–30 min  Last verified: 26 August 2021 Affected versions: Ubuntu 20.04 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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How To Install VestaCP and Migrate User Data — step-by-step Linux tutorial on Progressive Robot

How To Install VestaCP and Migrate User Data

  • August 26, 2021
  • Linux
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The Vesta Control Panel is a free, open source control panel with website, email, database, and DNS functionalities. In this tutorial we will install the control panel on an Ubuntu or CentOS server, update the default admin interface port, and learn how…

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Ubuntu 18.04 — libpano13 — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — libpano13 — multiple vulnerabilities (2 CVEs) — patch and remediation guide

  • August 26, 2021
  • Linux
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🟢 Low   ⏱ 5–15 min  Last verified: 26 August 2021 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6163-1 Related CVEs: CVE-2021-20307 CVE-2021-33293 Upstream summary: It was discovered that pano13 did not properly validate the prefix provided for PTcrop's output. An attacker could use this issue to cause […]

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Ubuntu 14.04 — ldb — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 14.04

Ubuntu 14.04 — ldb — multiple vulnerabilities (5 CVEs) — patch and remediation guide

  • August 26, 2021
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 26 August 2021 Affected versions: Ubuntu 14.04 (trusty) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4888-2 Related CVEs: CVE-2020-27840 CVE-2021-20277 CVE-2019-3824 CVE-2015-3223 CVE-2015-5330 Upstream summary: USN-4888-1 fixed several vulnerabilities in ldb. This update provides the corresponding update for Ubuntu 14.04 ESM. Original advisory details: Douglas […]

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Установка Elasticsearch, Logstash и Kibana (комплект Elastic) в Ubuntu 20.04 — step-by-step Linux tutorial on Progressive Robot

Установка Elasticsearch, Logstash и Kibana (комплект Elastic) в Ubuntu 20.04

  • August 25, 2021
  • Linux
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Комплекс Elastic Stack (прежнее название — комплекс ELK) представляет собой набор программного обеспечения Elastic с открытым исходным кодом, обеспечивающий возможности поиска, анализа и визуализации журналов, сгенерированных любым источником в любом…

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Common Problems 118449

Ubuntu 16.04 LTS ext4 Filesystem Remounted Read-Only

  • August 24, 2021
  • Linux
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🟠 High   ⏱ 5–30 min  Last verified: 24 August 2021 Affected versions: 16.04 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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Common Problems 117547

Ubuntu 20.04 LTS – DKMS module build fails after kernel upgrade – Fix & Prevention

  • August 24, 2021
  • Linux
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🟠 High   ⏱ 5–30 min  Last verified: 24 August 2021 Affected versions: Ubuntu 20.04 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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Ubuntu 18.04 — pdfresurrect — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — pdfresurrect — multiple vulnerabilities (5 CVEs) — patch and remediation guide

  • August 24, 2021
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 24 August 2021 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5282-1 Related CVEs: CVE-2019-14267 CVE-2019-14934 CVE-2020-20740 CVE-2020-9549 CVE-2021-3508 Upstream summary: It was discovered that PDFResurrect was incorrectly handling corrupted PDF files. An attacker could possibly use this issue to cause […]

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