Troubleshooting

Ubuntu 18.04 — spamassassin — multiple vulnerabilities (8 CVEs) — patch and remediation guide

• July 3, 2020
• Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 3 July 2020 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4899-1 Related CVEs: CVE-2020-1946 CVE-2020-1930 CVE-2020-1931 CVE-2018-11805 CVE-2019-12420 CVE-2017-15705 CVE-2018-11780 CVE-2018-11781 Upstream summary: Damian Lukowski discovered that SpamAssassin incorrectly handled certain CF files. If a user or automated system were […]

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How to Install Python 3.7 on Debian 10

• July 3, 2020
• Linux
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Introduction Debian 10 Buster is built around the ethos of stability and free software. Setting up install python 3.7 on debian 10 on Buster leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Buster freeze. Follow each step carefully and the […]

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SLES 12 — iproute2 — vulnerability — patch and remediation guide

• July 3, 2020
• Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 3 July 2020 Affected versions: SLES 12 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2021:3452-1 (see also SUSE bugzilla) Related CVEs: CVE-2019-20795 Upstream summary: iproute2 before 5.1.0 has a use-after-free in get_netnsid_from_name in ip/ipnetns.c. NOTE: security relevance may be limited to certain uses of setuid that, […]

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Arch Linux — ipmitool — vulnerability — patch and remediation guide

• July 3, 2020
• Linux
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🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-202102-39 Related CVEs: CVE-2020-5208 Upstream summary: Type: arbitrary code execution. Status: Fixed. Affected: 1.8.18-6. Fixed in: 1.8.18-7. Group: AVG-1596. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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Debian 10 — proftpd-dfsg — multiple vulnerabilities (3 CVEs) — patch and remediation guide

• July 3, 2020
• Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 3 July 2020 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-12815 CVE-2019-18217 CVE-2020-9273 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 – kernel panic after update due to incompatible third-party module

• July 2, 2020
• Linux
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🔴 Critical   ⏱ 5–30 min  Last verified: 2 July 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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Kernel Updated but System Booted into Older Kernel

• July 2, 2020
• Tutorials
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🟡 Medium   ⏱ 5–30 min  Last verified: 2 July 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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openSUSE Tumbleweed — libtheora1 — vulnerability — patch and remediation guide

• July 2, 2020
• Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2018:0015-1 (see also SUSE bugzilla) Related CVEs: CVE-2017-14633 Upstream summary: In Xiph.Org libvorbis 1.3.5, an out-of-bounds array read vulnerability exists in the function mapping0_forward() in mapping0.c, which may lead to DoS when […]

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How to Create a Virtual Machine in Hyper-V on Windows Server 2012 R2

• July 2, 2020
• Tutorials
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How to Create a Virtual Machine in Hyper-V on Windows Server 2012 R2 Creating virtual machines is the primary day-to-day task of a Hyper-V administrator. Windows Server 2012 R2 Hyper-V introduces Generation 2 VMs — which use UEFI firmware, support Secure Boot, and eliminate legacy hardware emulation — alongside the traditional Generation 1 VMs which […]

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Oracle Linux 8 — php:7.3 — vulnerability — patch and remediation guide

• July 2, 2020
• Linux
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🔴 Critical   ⏱ 15–90 min  Last verified: 2 July 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2019-3736 Related CVEs: CVE-2019-11043 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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