How To Install ionCube on Ubuntu 16.04
ionCube is a PHP module extension that loads encrypted PHP files and speeds up webpages. It is often required for PHP-based applications. In this tutorial, we will install ionCube on a Ubuntu 16.04 server.
How To Add the gzip Module to Nginx on Ubuntu 16.04
How fast a website will load depends on the size of all of the files that have to be downloaded by the browser. Reducing the size of files to be transmitted can make the website not only load faster, but also cheaper to those who have to pay for their bandwidth usage. In this guide, we’ll discuss how to configure Nginx installed on your Ubuntu 16.04 server to utilize `gzip` compression to reduce the size of content sent to website visitors.
Ubuntu 22.04 Time Drift from Conflicting NTP Services
🟡 Medium ⏱ 5–30 min Last verified: 19 December 2022 📖 ~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 […]
Ubuntu 16.04 — percona-xtrabackup — vulnerability — patch and remediation guide
🟢 Low ⏱ 5–15 min Last verified: 19 December 2022 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read • Source: Ubuntu Security Notice USN-6745-1 Related CVEs: CVE-2022-25834 Upstream summary: It was discovered that in Percona XtraBackup, a local crafted filename could trigger arbitrary code execution. Table of contents Symptom & Impact Environment & […]
Ubuntu 14.04 — protobuf — multiple vulnerabilities (3 CVEs) — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 19 December 2022 Affected versions: Ubuntu 14.04 (trusty) 📖 ~4 min read • Source: Ubuntu Security Notice USN-5945-1 Related CVEs: CVE-2021-22569 CVE-2021-22570 CVE-2022-1941 Upstream summary: It was discovered that Protocol Buffers did not properly validate field com.google.protobuf.UnknownFieldSet in protobuf-java. An attacker could possibly use this issue to […]
Ubuntu 22.04 LTS – apt lock contention from unattended-upgrades blocks installs – Fix & Prevention
🟡 Medium ⏱ 5–30 min Last verified: 18 December 2022 Affected versions: Ubuntu 22.04 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 […]
Ubuntu 20.04 — neutron — multiple vulnerabilities (5 CVEs) — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 18 December 2022 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read • Source: Ubuntu Security Notice USN-6067-1 Related CVEs: CVE-2021-20267 CVE-2021-38598 CVE-2021-40085 CVE-2021-40797 CVE-2022-3277 Upstream summary: David Sinquin discovered that OpenStack Neutron incorrectly handled the default Open vSwitch firewall rules. An attacker could possibly use this […]
Ubuntu 20.04 — jupyter-core — vulnerability — patch and remediation guide
🟢 Low ⏱ 5–15 min Last verified: 18 December 2022 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read • Source: Ubuntu Security Notice USN-6153-1 Related CVEs: CVE-2022-39286 Upstream summary: It was discovered that Jupyter Core executed untrusted files in the current working directory. An attacker could possibly use this issue to execute arbitrary […]
Ubuntu 22.04 LTS Netplan Apply Drops SSH Connectivity
🟡 Medium ⏱ 5–30 min Last verified: 17 December 2022 📖 ~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 […]
How to Send Email in Linux from the Command Line
Learn how to send email from the Linux command line using tools like mail, sendmail, and ssmtp. Step-by-step examples and best practices for automating email alerts.
