Troubleshooting

Common Problems 118924

Ubuntu 14.04 LTS Boot Drops to initramfs Prompt

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

FreeBSD 12 — gitolite — 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: gitolite — path traversal vulnerability Related CVEs: CVE-2012-4506 Upstream summary: Sitaram Chamarty reports: I'm sorry to say there is a potential path traversal vulnerability in v3. Thanks to Stephane Chazelas […]

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How to Configure Consul for Service Discovery on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Configure Consul for Service Discovery on FreeBSD 12

Introduction How to Configure Consul for Service Discovery on FreeBSD 12 is a core administration task for any FreeBSD 12 server operator. FreeBSD 12 ships with the 15.0-RELEASE kernel, ZFS as the default root filesystem, Capsicum capability sandboxing improvements, and an updated ports tree. Unlike Linux distributions, FreeBSD uses rc(8) for service management, pf for […]

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FreeBSD 12 — fetchmail — multiple vulnerabilities (19 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — fetchmail — multiple vulnerabilities (19 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 11 November 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: fetchmail — potential crash when authenticating to SMTP server Related CVEs: CVE-2003-0792 CVE-2005-2335 CVE-2005-3088 CVE-2005-4348 CVE-2006-0321 CVE-2006-5867 CVE-2006-5974 CVE-2007-1558  +11 more Upstream summary: Matthias Andree reports: fetchmail's SMTP client, when […]

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SLES 15 — libbsd0 — vulnerability — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — libbsd0 — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 11 November 2019 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2020:1298-1 (see also SUSE bugzilla) Related CVEs: CVE-2019-20367 Upstream summary: nlist.c in libbsd before 0.10.0 has an out-of-bounds read during a comparison for a symbol name from the string table (strtab). Table […]

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How to Deploy a Django App with Gunicorn on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Deploy a Django App with Gunicorn on FreeBSD 12

Introduction How to Deploy a Django App with Gunicorn on FreeBSD 12 is a core administration task for any FreeBSD 12 server operator. FreeBSD 12 ships with the 15.0-RELEASE kernel, ZFS as the default root filesystem, Capsicum capability sandboxing improvements, and an updated ports tree. Unlike Linux distributions, FreeBSD uses rc(8) for service management, pf […]

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IBM AIX 7.2 — CVE-2019-4728 — vulnerability — patch and remediation guide — diagnosis and fix on IBM AIX 7.2

IBM AIX 7.2 — CVE-2019-4728 — vulnerability — patch and remediation guide

🟠 High   ⏱ 30–90 min  Last verified: 11 November 2019 Affected versions: IBM AIX 7.2 📖 ~4 min read  •  Source: NVD CVE-2019-4728, IBM Support Bulletin CVE: CVE-2019-4728 NVD summary: IBM Sterling B2B Integrator Standard Edition 5.2.0.0 through 5.2.6.5_2, 6.0.0.0 through 6.0.3.2, and 6.1.0.0 could allow a remote attacker to execute arbitrary code on […]

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How to Scan for Vulnerabilities with OpenVAS on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Scan for Vulnerabilities with OpenVAS on RHEL 7

How to Scan for Vulnerabilities with OpenVAS on RHEL 7 OpenVAS (Open Vulnerability Assessment System), now part of the Greenbone Vulnerability Management (GVM) framework, is one of the most capable open-source vulnerability scanners available. It maintains a continuously updated feed of over 50,000 Network Vulnerability Tests (NVTs) and can detect misconfigurations, outdated software, missing patches, […]

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How to Configure Fabric Deployment Tool on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Configure Fabric Deployment Tool on Debian 9

Introduction This guide explains how to Configure Fabric Deployment Tool on Debian 9 on Debian 9 Stretch. Debian Stretch uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian 9 install with the […]

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Common Problems 115472

NFS mount hangs at boot

🟡 Medium   ⏱ 5–30 min  Last verified: 10 November 2019 📖 ~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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