Troubleshooting

Oracle Linux 8 — python-pip — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — python-pip — vulnerability — patch and remediation guide (ELSA-2020-4432)

🟡 Medium   ⏱ 10–30 min  Last verified: 12 November 2019 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-4432 Related CVEs: CVE-2019-20916 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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Arch Linux — wireshark-qt — multiple vulnerabilities (14 CVEs) — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — wireshark-qt — multiple vulnerabilities (14 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-201805-25 Related CVEs: CVE-2018-11362 CVE-2018-11361 CVE-2018-11360 CVE-2018-11359 CVE-2018-11358 CVE-2018-11357 CVE-2018-11356 CVE-2018-11355  +6 more Upstream summary: Type: multiple issues. Status: Fixed. Affected: 2.6.0-1. Fixed in: 2.6.1-1. Group: AVG-708. Table of contents […]

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How to Install and Configure SonarQube on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Install and Configure SonarQube on RHEL 7

How to Install and Configure SonarQube on RHEL 7 SonarQube is an open-source platform for continuous code quality inspection and static analysis. It detects bugs, vulnerabilities, code smells, and security hotspots across dozens of programming languages, integrating naturally into CI/CD pipelines to enforce quality gates before code reaches production. On RHEL 7, setting up SonarQube […]

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FreeBSD 12 — flock — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — flock — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 12 November 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: mozilla — multiple vulnerabilities Related CVEs: CVE-2007-4879 CVE-2007-5959 CVE-2008-0016 CVE-2008-0412 CVE-2008-0413 CVE-2008-0414 CVE-2008-0415 CVE-2008-0417  +12 more Upstream summary: The Mozilla Foundation reports: MFSA 2008-37 UTF-8 URL stack buffer overflow MFSA […]

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Debian 9 — rdesktop — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 9

Debian 9 — rdesktop — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 12 November 2019 Affected versions: Debian 9 (stretch) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2018-8791 CVE-2019-15682 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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How to Configure Log Rotation with logrotate on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Configure Log Rotation with logrotate on RHEL 8

Log files grow indefinitely unless something rotates and prunes them, which will eventually fill a disk and crash your services. On RHEL 8, logrotate is installed by default and handles rotation for most system logs out of the box via a systemd timer. For application logs your team manages, you need to write a custom […]

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Common Problems 121588

Fail2ban Blocking Trusted Internal Addresses

🟡 Medium   ⏱ 5–30 min  Last verified: 11 November 2019 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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FreeBSD 12 — pypy — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — pypy — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 11 November 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: Python — DoS via malformed XML-RPC / HTTP POST request Related CVEs: CVE-2012-0845 Upstream summary: Jan Lieskovsky reports, A denial of service flaw was found in the way Simple XML-RPC […]

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How to Set Up Nginx Load Balancing on SLES 12 — step-by-step SUSE Linux Enterprise 12 tutorial on Progressive Robot

How to Set Up Nginx Load Balancing on SLES 12

Introduction This tutorial covers How to Set Up Nginx Load Balancing on SLES 12 on SLES 12. SLES 12 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Prerequisites Ensure your SLES 12 system is up to date: […]

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openSUSE Tumbleweed — libzip4 — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — libzip4 — 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 security advisory (see also SUSE bugzilla) Related CVEs: CVE-2012-1162 CVE-2012-1163 Upstream summary: Heap-based buffer overflow in the _zip_readcdir function in zip_open.c in libzip 0.10 allows remote attackers to cause a denial of service […]

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