Common Problems

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

openSUSE Tumbleweed — hyper-v — 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 SUSE-RU-2012:1673-1 (see also SUSE bugzilla) Related CVEs: CVE-2012-2669 CVE-2012-5532 Upstream summary: The main function in tools/hv/hv_kvp_daemon.c in hypervkvpd, as distributed in the Linux kernel before 3.4.5, does not validate the origin of […]

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

FreeBSD 12 — courier — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 24 January 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: Courier mail services: remotely exploitable buffer overflows Related CVEs: CVE-2004-0224 Upstream summary: The Courier set of mail services use a common Unicode library. This library contains buffer overflows in the […]

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Debian 9 — neutron — vulnerability — patch and remediation guide — diagnosis and fix on Debian 9

Debian 9 — neutron — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 24 January 2020 Affected versions: Debian 9 (stretch) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-9735 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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SLES 12 — nfs-doc — vulnerability — patch and remediation guide — diagnosis and fix on SLES 12

SLES 12 — nfs-doc — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 24 January 2020 Affected versions: SLES 12 📖 ~4 min read  •  Source: SUSE advisory SUSE-CU-2019:744-1 (see also SUSE bugzilla) Related CVEs: CVE-2019-3689 Upstream summary: The nfs-utils package in SUSE Linux Enterprise Server 12 before and including version 1.3.0-34.18.1 and in SUSE Linux Enterprise Server 15 before […]

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

Debian 10 — openconnect — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 24 January 2020 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-16239 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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Common Problems 118409

Ubuntu 16.04 LTS DNS Resolution Intermittently Fails

🟡 Medium   ⏱ 5–30 min  Last verified: 23 January 2020 Affected versions: 16.04 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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openSUSE Tumbleweed — ruby2.2-rubygem-railties — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — ruby2.2-rubygem-railties — vulnerability — 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-2014-3514 Upstream summary: activerecord/lib/active_record/relation/query_methods.rb in Active Record in Ruby on Rails 4.0.x before 4.0.9 and 4.1.x before 4.1.5 allows remote attackers to bypass the strong […]

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Common Problems 117985

Ubuntu 18.04 LTS – boot drops into emergency mode after fstab change

🔴 Critical   ⏱ 5–30 min  Last verified: 23 January 2020 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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FreeBSD 12 — ossec-hids-server — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — ossec-hids-server — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 23 January 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: security/ossec-hids-* — root escalation via syscheck feature Related CVEs: CVE-2014-5284 CVE-2015-3222 Upstream summary: OSSEC reports: The CVE-2015-3222 vulnerability, which allows for root escalation via sys check has been fixed in […]

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FreeBSD 12 — ikiwiki — multiple vulnerabilities (10 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — ikiwiki — multiple vulnerabilities (10 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 23 January 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: ikiwiki — authentication bypass vulnerability Related CVEs: CVE-2008-0165 CVE-2008-0169 CVE-2008-0808 CVE-2009-2944 CVE-2011-1408 CVE-2016-10026 CVE-2016-4561 CVE-2016-9645  +2 more Upstream summary: ikiwiki reports: The ikiwiki maintainers discovered further flaws similar to CVE-2016-9646 […]

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