Troubleshooting

FreeBSD 12 — ppxp — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — ppxp — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 3 November 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: ppxp — local root exploit Related CVEs: CVE-2005-0392 Upstream summary: A Debian Advisory reports: Jens Steube discovered that ppxp, yet another PPP program, does not release root privileges when opening […]

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Arch Linux — zsh — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — zsh — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-201804-5 Related CVEs: CVE-2018-1100 CVE-2018-7549 CVE-2018-7548 CVE-2018-13259 CVE-2018-0502 Upstream summary: Type: arbitrary code execution. Status: Fixed. Affected: 5.4.2-2. Fixed in: 5.5-1. Group: AVG-669. Table of contents Symptom & Impact Environment […]

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Common Problems 118484

Ubuntu 16.04 LTS cron jobs not executing after timezone change

🟡 Medium   ⏱ 5–30 min  Last verified: 2 November 2019 Affected versions: 16.04 📖 ~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 […]

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Common Problems 117945

Ubuntu 18.04 LTS – SSH login rejected despite correct credentials

🟠 High   ⏱ 5–30 min  Last verified: 2 November 2019 Affected versions: Ubuntu 18.04 LTS Ubuntu 18.04 Ubuntu 18.04.6 📖 ~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 […]

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How to Set Up Nexus Repository Manager on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Set Up Nexus Repository Manager on Debian 9

Introduction Debian 9 Stretch is built around the ethos of stability and free software. Setting up set up nexus repository manager on debian 9 on Stretch leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Stretch freeze. Follow each step carefully […]

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FreeBSD 12 — helm — security advisory — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — helm — security advisory — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 2 November 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: Helm — client unpacking chart that contains malicious content Upstream summary: Helm security notice A specially crafted chart may be able to unpack content into locations on the filesystem outside […]

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openSUSE Tumbleweed — ruby2.7-rubygem-rack — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — ruby2.7-rubygem-rack — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2019:1553-1 (see also SUSE bugzilla) Related CVEs: CVE-2018-16471 CVE-2019-16782 Upstream summary: There is a possible XSS vulnerability in Rack before 2.0.6 and 1.6.11. Carefully crafted requests can impact the data returned by […]

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How to Set Up Windows Server 2019 Network Controller — step-by-step Windows Server 2019 tutorial on Progressive Robot

How to Set Up Windows Server 2019 Network Controller

How to Set Up Windows Server 2019 Network Controller Network Controller is a Software Defined Networking (SDN) component available in Windows Server 2019 Datacenter edition that provides a centralized, programmable point of automation for virtual and physical network infrastructure management. Network Controller manages Hyper-V virtual networks, software load balancers, RAS Gateways, and Network Security Groups. […]

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Alpine Linux edge — libidn — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — libidn — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 1.33-r0 📖 ~4 min read  •  Source: Alpine secdb entry — libidn 1.33-r0 Related CVEs: CVE-2015-8948 CVE-2016-6261 CVE-2016-6262 CVE-2016-6263 Upstream summary: Alpine main repository for vedge ships libidn 1.33-r0 which addresses CVE-2015-8948. Table of contents Symptom […]

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FreeBSD 12 — linux-c6-icu — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — linux-c6-icu — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 2 November 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: icu — multiple vulnerabilities Related CVEs: CVE-2017-7867 CVE-2017-7868 Upstream summary: NVD reports: International Components for Unicode (ICU) for C/C++ before 2017-02-13 has an out-of-bounds write caused by a heap-based buffer […]

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