ubuntu

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

Ubuntu 20.04 — icu — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 7 June 2021 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5156-1 Related CVEs: CVE-2021-30535 Upstream summary: It was discovered that ICU contains a double free issue. An attacker could use this issue to cause a denial of service or possibly […]

Read more
Ubuntu 18.04 — sane-backends — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — sane-backends — multiple vulnerabilities (8 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 6 June 2021 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4470-1 Related CVEs: CVE-2017-6318 CVE-2020-12861 CVE-2020-12862 CVE-2020-12863 CVE-2020-12864 CVE-2020-12865 CVE-2020-12866 CVE-2020-12867 Upstream summary: Kritphong Mongkhonvanit discovered that sane-backends incorrectly handled certain packets. A remote attacker could possibly use this issue […]

Read more
Ubuntu 20.04 — gsl — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — gsl — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 6 June 2021 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6472-1 Related CVEs: CVE-2020-35357 Upstream summary: It was discovered that GNU Scientific Library incorrectly handled certain inputs. If a user or an automated system were tricked into opening a specially […]

Read more
Common Problems 119020

Ubuntu 14.04 LTS Swap Thrashing Under Moderate Load

🟠 High   ⏱ 5–30 min  Last verified: 5 June 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 & […]

Read more
Ubuntu 20.04 — keepalived — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — keepalived — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 5 June 2021 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5188-1 Related CVEs: CVE-2021-44225 Upstream summary: It was discovered that Keepalived incorrectly handled certain messages. An attacker could possibly use this issue to access-control bypass. Table of contents Symptom & […]

Read more
How To Set Up and Configure a Certificate Authority (CA) On Ubuntu 20.04 — step-by-step Linux tutorial on Progressive Robot

How To Set Up and Configure a Certificate Authority (CA) On Ubuntu 20.04

A private Certificate Authority that runs on Ubuntu 20.04 will enable you to configure, test, and run programs that require encrypted connections between a client and a server. Using a private CA, you can issue certificates for users, servers, or individual programs and services within your infrastructure. A private CA can help ensure that all your development, staging, and production environments use similar architectures and configurations.

Read more
Common Problems 118606

Ubuntu 16.04 LTS – TLS connections fail due to outdated CA certificates

🟠 High   ⏱ 5–30 min  Last verified: 4 June 2021 Affected versions: Ubuntu 16.04 LTS Ubuntu 16.04 Ubuntu 16.04.7 📖 ~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 […]

Read more
CHAT