Operations

Ubuntu 16.04 — tomcat8 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — tomcat8 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

  • March 25, 2022
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 25 March 2022 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6943-1 Related CVEs: CVE-2020-9484 CVE-2021-25122 CVE-2021-41079 CVE-2022-23181 CVE-2022-29885 CVE-2020-13935 CVE-2020-1935 CVE-2019-12418  +12 more Upstream summary: It was discovered that Tomcat incorrectly handled certain uncommon PersistenceManager with FileStore configurations. A remote […]

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How to Manage Node.js Versions with nvm on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Manage Node.js Versions with nvm on Debian 11

  • March 25, 2022
  • Linux
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Introduction Deploying manage node.js versions with nvm on debian 11 on a Debian 11 Bullseye machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. Prerequisites You […]

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Ubuntu 20.04 — lib3mf — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — lib3mf — vulnerability — patch and remediation guide

  • March 25, 2022
  • Linux
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🟢 Low   ⏱ 5–15 min  Last verified: 25 March 2022 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6216-1 Related CVEs: CVE-2021-21772 Upstream summary: It was discovered that lib3mf did not properly manage memory under certain circumstances. If a user were tricked into opening a specially crafted 3MF […]

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Ubuntu 18.04 — monit — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — monit — multiple vulnerabilities (3 CVEs) — patch and remediation guide

  • March 25, 2022
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 March 2022 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6571-1 Related CVEs: CVE-2022-26563 CVE-2019-11454 CVE-2019-11455 Upstream summary: Youssef Rebahi-Gilbert discovered that Monit did not properly process credentials for disabled accounts. An attacker could possibly use this issue to login […]

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Arch Linux — runc — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — runc — multiple vulnerabilities (3 CVEs) — patch and remediation guide

  • March 25, 2022
  • 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-202105-17 Related CVEs: CVE-2021-30465 CVE-2019-5736 CVE-2016-9962 Upstream summary: Type: sandbox escape. Status: Fixed. Affected: 1.0.0rc94-1. Fixed in: 1.0.0rc95-1. Group: AVG-1972. Table of contents Symptom & Impact Environment & Reproduction Root […]

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Debian 10 — squashfs-tools — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — squashfs-tools — multiple vulnerabilities (2 CVEs) — patch and remediation guide

  • March 25, 2022
  • Linux
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🟢 Low   ⏱ 5–15 min  Last verified: 25 March 2022 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2021-40153 CVE-2021-41072 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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How to Install Redis on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Install Redis on RHEL 7

  • March 25, 2022
  • Linux
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How to Install Redis on RHEL 7 Redis is an open-source, in-memory data structure store used as a database, cache, message broker, and streaming engine. Its sub-millisecond response times make it the go-to solution for session caching, real-time leaderboards, pub/sub messaging, and rate limiting in high-performance web applications. On RHEL 7, Redis is available through […]

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IBM AIX 7.1 — CVE-2022-34362 — xss — patch and remediation guide — diagnosis and fix on IBM AIX 7.1

IBM AIX 7.1 — CVE-2022-34362 — xss — patch and remediation guide

🟡 Medium   ⏱ 15–45 min  Last verified: 24 March 2022 Affected versions: IBM AIX 7.1 📖 ~4 min read  •  Source: NVD CVE-2022-34362, IBM Support Bulletin CVE: CVE-2022-34362 NVD summary: IBM Sterling Secure Proxy 6.0.3 is vulnerable to HTTP header injection, caused by improper validation of input by the HOST headers. This could allow […]

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How to Set Up VLANs on CentOS Stream 9 — step-by-step CentOS Stream 9 tutorial on Progressive Robot

How to Set Up VLANs on CentOS Stream 9

  • March 24, 2022
  • CentOS
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Introduction How to Set Up VLANs on CentOS Stream 9 on CentOS Stream 9 provides administrators with a robust, enterprise-ready workflow that integrates cleanly with systemd, SELinux, firewalld, and the modern AppStream module system. In this tutorial we will walk through every step required, from package installation to verification, so that the resulting configuration is […]

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IBM AIX 7.2 — CVE-2022-35646 — vulnerability — patch and remediation guide — diagnosis and fix on IBM AIX 7.2

IBM AIX 7.2 — CVE-2022-35646 — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 15–45 min  Last verified: 24 March 2022 Affected versions: IBM AIX 7.2 📖 ~4 min read  •  Source: NVD CVE-2022-35646, IBM Support Bulletin CVE: CVE-2022-35646 NVD summary: IBM Security Verify Governance, Identity Manager 10.0.1 software component could allow an authenticated user to modify or cancel any other user's access request using […]

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