Package Management

IBM AIX 7.2 — CVE-2021-39033 — vulnerability — patch and remediation guide — diagnosis and fix on IBM AIX 7.2

IBM AIX 7.2 — CVE-2021-39033 — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 15–45 min  Last verified: 6 February 2021 Affected versions: IBM AIX 7.2 📖 ~4 min read  •  Source: NVD CVE-2021-39033, IBM Support Bulletin CVE: CVE-2021-39033 NVD summary: IBM Sterling B2B Integrator Standard Edition 6.0.0.0 through 6.0.3.5 and 6.1.0.0 through 6.1.1.0 could allow a remote attacker to obtain sensitive information when a […]

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Common Problems 118056

Ubuntu 18.04 LTS – time sync unstable due to chrony and systemd-timesyncd conflict – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 6 February 2021 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 16.04 — wkhtmltopdf — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — wkhtmltopdf — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 6 February 2021 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6232-1 Related CVEs: CVE-2020-21365 Upstream summary: It was discovered that wkhtmltopdf was not properly enforcing the same-origin policy when processing certain HTML files. If a user or automated system using […]

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Common Problems 115400

YUM Mirror Timeout and Slow Repository Response

🟡 Medium   ⏱ 5–30 min  Last verified: 6 February 2021 📖 ~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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How to Deploy a Rust Web Application on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Deploy a Rust Web Application on Oracle Linux 8

Introduction How to Deploy a Rust Web Application on Oracle Linux 8 on Oracle Linux 8 provides administrators with a robust, enterprise-ready workflow that integrates cleanly with systemd, SELinux, firewalld, and the modern AppStream module system. In this tutorial we will walk through every step required, from package installation to verification, so that the resulting […]

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SLES 15 — squashfs — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — squashfs — multiple vulnerabilities (6 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 6 February 2021 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2023:4424-1 (see also SUSE bugzilla) Related CVEs: CVE-2021-40153 CVE-2021-41072 CVE-2015-4645 CVE-2015-4646 CVE-2012-4025 CVE-2012-4024 Upstream summary: squashfs_opendir in unsquash-1.c in Squashfs-Tools 4.5 stores the filename in the directory entry; this is then used […]

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SLES 12 — python-Pygments — vulnerability — patch and remediation guide — diagnosis and fix on SLES 12

SLES 12 — python-Pygments — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 6 February 2021 Affected versions: SLES 12 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2021:3814-1 (see also SUSE bugzilla) Related CVEs: CVE-2021-27291 Upstream summary: In pygments 1.1+, fixed in 2.7.4, the lexers used to parse programming languages rely heavily on regular expressions. Some of the regular […]

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Debian 10 — mailman — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — mailman — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 6 February 2021 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-12108 CVE-2020-12137 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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Oracle Linux 8 — OCFS2 File System Not Supported on RHCK — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — OCFS2 File System Not Supported on RHCK

🟠 High   ⏱ 5–30 min  Last verified: 5 February 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: Oracle Bug OLRNT-ol8-issues-btrfsocfs2-support 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 […]

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Debian 10 — blueman — vulnerability — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — blueman — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 5 February 2021 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-15238 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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