Troubleshooting

Ubuntu 20.04 — linux-aws-5.8 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — linux-aws-5.8 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 29 March 2021 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5050-1 Related CVEs: CVE-2020-26558 CVE-2021-0129 CVE-2021-28691 CVE-2021-3564 CVE-2021-3573 CVE-2021-38208 CVE-2021-23134 CVE-2021-32399  +12 more Upstream summary: It was discovered that the bluetooth subsystem in the Linux kernel did not properly perform […]

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Common Problems 125154

Oracle Linux 8 – Common Problem 019 – Diagnosis and Fix

🟡 Medium   ⏱ 5–30 min  Last verified: 28 March 2021 Affected versions: Oracle Linux 8 📖 ~3 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 118920

Ubuntu 14.04 LTS Stuck at GRUB Prompt After Kernel Cleanup

🟠 High   ⏱ 5–30 min  Last verified: 28 March 2021 Affected versions: 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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openSUSE Tumbleweed — deluge — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — deluge — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2021-3427 CVE-2017-9031 Upstream summary: The Deluge Web-UI is vulnerable to XSS through a crafted torrent file. The the data from torrent files is not properly […]

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Common Problems 118045

Ubuntu 18.04 LTS – time drift causes TLS certificate validation errors

🟠 High   ⏱ 5–30 min  Last verified: 28 March 2021 Affected versions: Ubuntu 18.04 LTS Ubuntu 18.04 Ubuntu 18.04.6 📖 ~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 […]

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How to Install Cassandra on SLES 15 — step-by-step SUSE Linux Enterprise 15 tutorial on Progressive Robot

How to Install Cassandra on SLES 15

Introduction This tutorial covers How to Install Cassandra on SLES 15 on SLES 15. SLES 15 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Prerequisites Ensure your SLES 15 system is up to date: zypper refresh && […]

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IBM AIX 7.2 — CVE-2021-20483 — vulnerability — patch and remediation guide — diagnosis and fix on IBM AIX 7.2

IBM AIX 7.2 — CVE-2021-20483 — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 15–45 min  Last verified: 28 March 2021 Affected versions: IBM AIX 7.2 📖 ~4 min read  •  Source: NVD CVE-2021-20483, IBM Support Bulletin CVE: CVE-2021-20483 NVD summary: IBM Security Identity Manager 6.0.2 is vulnerable to server-side request forgery (SSRF). By sending a specially crafted request, a remote authenticated attacker could exploit […]

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FreeBSD 12 — anydesk — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — anydesk — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 28 March 2021 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: Anydesk — Multiple Vulnerabilities Related CVEs: CVE-2020-13160 Upstream summary: Anydesk reports: AnyDesk before 5.5.3 on Linux and FreeBSD has a format string vulnerability that can be exploited for remote code […]

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Ubuntu 14.04 — dovecot — multiple vulnerabilities (11 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 14.04

Ubuntu 14.04 — dovecot — multiple vulnerabilities (11 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 28 March 2021 Affected versions: Ubuntu 14.04 (trusty) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4674-2 Related CVEs: CVE-2020-25275 CVE-2020-12100 CVE-2020-12673 CVE-2020-12674 CVE-2019-11500 CVE-2019-7524 CVE-2019-3814 CVE-2017-14461  +3 more Upstream summary: USN-4674-1 fixed a vulnerability in Dovecot. This update provides the corresponding update for Ubuntu 14.04 […]

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