Linux

Oracle Linux 8 — varnish:6 security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2020-4756)

• October 27, 2020
• Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 27 October 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-4756 Related CVEs: CVE-2019-20637 CVE-2019-15892 CVE-2020-11653 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification […]

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Debian 9: PostgreSQL fails because WAL partition is full

• October 27, 2020
• Linux
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🔴 Critical   ⏱ 5–30 min  Last verified: 27 October 2020 Affected versions: Debian 9 📖 ~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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Debian 9 – apt update shows NO_PUBKEY and rejects repository signatures

• October 27, 2020
• Linux
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🟠 High   ⏱ 5–30 min  Last verified: 27 October 2020 Affected versions: Debian 9 📖 ~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 16.04 LTS – NTP drift causes clock skew and auth failures – Fix & Prevention

• October 27, 2020
• Linux
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🟠 High   ⏱ 5–30 min  Last verified: 27 October 2020 Affected versions: Ubuntu 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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Ubuntu 18.04 root partition out of disk space

• October 27, 2020
• Linux
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🟡 Medium   ⏱ 5–30 min  Last verified: 27 October 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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Ubuntu 16.04 — libmediainfo — multiple vulnerabilities (4 CVEs) — patch and remediation guide

• October 27, 2020
• Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 27 October 2020 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5237-1 Related CVEs: CVE-2020-15395 CVE-2020-26797 CVE-2019-11372 CVE-2019-11373 Upstream summary: It was discovered that MediaInfoLib incorrectly handled certain specially crafted files. An attacker could possibly use this issue to cause a […]

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How To Use Apache as a Reverse-Proxy with mod_proxy on Ubuntu 20.04

• October 27, 2020
• Linux
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In this tutorial, you’ll set up Apache as a basic reverse proxy using the mod_proxy extension to redirect incoming connections to one or several backend servers running on the same network. This tutorial uses a backend written with the Flask web framework, but you can use any backend server you prefer.

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SLES 15 — libjpeg8 — multiple vulnerabilities (12 CVEs) — patch and remediation guide

• October 27, 2020
• Linux
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🟠 High   ⏱ 15–60 min  Last verified: 27 October 2020 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2021:1957-1 (see also SUSE bugzilla) Related CVEs: CVE-2020-17541 CVE-2019-2201 CVE-2020-35538 CVE-2018-19644 CVE-2014-9092 CVE-2017-15232 CVE-2018-1152 CVE-2018-11813  +4 more Upstream summary: Libjpeg-turbo all version have a stack-based buffer overflow in the "transform" component. A […]

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How To Back Up MySQL Databases to Object Storage with Percona on Ubuntu 16.04

• October 27, 2020
• Linux
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Databases often store some of the most valuable information in your infrastructure. Because of this, it is important to have reliable backups to guard against data loss in the event of an accident or hardware failure. The [Percona XtraBackup backup…

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Oracle Linux 8 – Common Problem 009 – Diagnosis and Fix

• October 26, 2020
• Linux
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🔴 Critical   ⏱ 5–30 min  Last verified: 26 October 2020 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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