ubuntu

Ubuntu 18.04 — tmpreaper — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — tmpreaper — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 1 February 2020 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4077-1 Related CVEs: CVE-2019-3461 Upstream summary: It was discovered that tmpreaper incorrectly handled certain mount operations. A local attacker could possibly use this issue to create arbitrary files, leading to […]

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Common Problems 118429

Ubuntu 16.04 LTS SSH Authentication Fails After Hardening

🟠 High   ⏱ 5–30 min  Last verified: 29 January 2020 Affected versions: 16.04 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 118108

Ubuntu 18.04 Failed Automatic Security Upgrades from GPG Key Errors

🟡 Medium   ⏱ 5–30 min  Last verified: 29 January 2020 📖 ~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 […]

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Common Problems 118087

Ubuntu 18.04 LTS – CA certificate trust chain errors break HTTPS endpoints – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 29 January 2020 Affected versions: Ubuntu 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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Ubuntu 18.04 — uwsgi — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — uwsgi — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 29 January 2020 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5054-1 Related CVEs: CVE-2020-11984 Upstream summary: Felix Wilhelm discovered a buffer overflow flaw in the mod_proxy_uwsgi module. An attacker could use this vulnerability to provoke an information disclosure or potentially […]

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How To Run Your Own Mail Server and File Storage with PEPS on Ubuntu 14.04 — step-by-step Linux tutorial on Progressive Robot

How To Run Your Own Mail Server and File Storage with PEPS on Ubuntu 14.04

We all use email and online file storage services like Gmail or Dropbox. However, these services may not be suitable for the storage of sensitive data, both personal and professional. Do we trust their privacy policies when attaching an important business contract or confidential information? Do we accept that all our data will be collected, processed, and analyzed? There is a solution to this problem: PEPS is an email, file sharing, and chat platform that uses end-to-end encryption.

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Ubuntu 16.04 — python-rsa — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — python-rsa — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 29 January 2020 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4478-2 Related CVEs: CVE-2020-13757 Upstream summary: USN-4478-1 fixed a vulnerability in Python-RSA. This update provides the corresponding update for Ubuntu 16.04 ESM, Ubuntu 18.04 ESM and Ubuntu 20.04 ESM. Original […]

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Ubuntu 18.04 — liblivemedia — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — liblivemedia — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 28 January 2020 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4853-1 Related CVEs: CVE-2018-4013 CVE-2019-6256 CVE-2019-7314 CVE-2019-9215 Upstream summary: It was discovered that liveMedia incorrectly handled certain network packets. An attacker could possibly use this issue to execute arbitrary code. […]

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