Linux

Ubuntu 16.04 — ppp — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — ppp — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 6 December 2020 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4451-1 Related CVEs: CVE-2020-15704 CVE-2020-8597 CVE-2018-11574 Upstream summary: Thomas Chauchefoin working with Trend Micro´s Zero Day Initiative, discovered that ppp incorrectly handled module loading. A local attacker could use this […]

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How To Install Jenkins on Ubuntu 16.04 — step-by-step Linux tutorial on Progressive Robot

How To Install Jenkins on Ubuntu 16.04

Jenkins is an open source automation server intended to automate repetitive technical tasks involved in the continuous integration and delivery of software. Jenkins is Java-based and can be installed from Ubuntu packages or by downloading and running its Web application ARchive…

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How To Install Java with Apt on Ubuntu 18.04 — step-by-step Linux tutorial on Progressive Robot

How To Install Java with Apt on Ubuntu 18.04

In this guide, you will install various versions of the Java Runtime Environment (JRE) and the Java Developer Kit (JDK) using `apt` . You’ll install OpenJDK as well as official packages from Oracle. You’ll then select the version you wish to use for your projects. When you’re finished, you’ll be able to use the JDK to develop software or use the Java Runtime to run software.

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openSUSE Tumbleweed — libEMF1 — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — libEMF1 — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2020:0831-1 (see also SUSE bugzilla) Related CVEs: CVE-2020-11865 CVE-2020-11863 CVE-2020-13999 Upstream summary: libEMF (aka ECMA-234 Metafile Library) through 1.0.11 allows out-of-bounds memory access. Table of contents Symptom & Impact Environment & Reproduction […]

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SLES 15 — perl-DBI — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — perl-DBI — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 6 December 2020 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2020:14510-1 (see also SUSE bugzilla) Related CVEs: CVE-2019-20919 CVE-2020-14392 CVE-2020-14393 CVE-2014-10401 CVE-2014-10402 Upstream summary: An issue was discovered in the DBI module before 1.643 for Perl. The hv_fetch() documentation requires checking for […]

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Oracle Linux 8 — flatpak-builder — security and stability fixes — required update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — flatpak-builder — security and stability fixes — required update (ELSA-2022-7458)

🟡 Medium   ⏱ 10–30 min  Last verified: 5 December 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-7458 Related CVEs: CVE-2022-21682 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

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Common Problems 118128

Ubuntu 18.04 LTS Cron Jobs Stop Running Due to PAM or Permission Changes

🟡 Medium   ⏱ 5–30 min  Last verified: 5 December 2020 Affected versions: 18.04 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 117406

Ubuntu 20.04 LTS – unattended-upgrades causes sustained CPU usage – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 5 December 2020 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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Alpine Linux edge — libmaxminddb — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — libmaxminddb — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 1.4.3-r0 📖 ~4 min read  •  Source: Alpine secdb entry — libmaxminddb 1.4.3-r0 Related CVEs: CVE-2020-28241 Upstream summary: Alpine main repository for vedge ships libmaxminddb 1.4.3-r0 which addresses CVE-2020-28241. Table of contents Symptom & Impact Environment […]

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