chris

Common Problems 121131

Permission Denied After Deployment

🟠 High   ⏱ 5–30 min  Last verified: 18 September 2019 Affected versions: Debian 10 📖 ~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 — dhcpcd — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — dhcpcd — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 18 September 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: dhcpcd — remote code execution/denial of service Related CVEs: CVE-2014-7912 CVE-2014-7913 CVE-2016-1503 CVE-2016-1504 Upstream summary: MITRE reports: The get_option function in dhcp.c in dhcpcd before 6.2.0, as used in dhcpcd […]

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openSUSE Tumbleweed — kdelibs3 — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — kdelibs3 — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory SUSE-SA:2009:052 (see also SUSE bugzilla) Related CVEs: CVE-2009-0689 CVE-2011-3365 CVE-2013-2074 Upstream summary: Array index error in the (1) dtoa implementation in dtoa.c (aka pdtoa.c) and the (2) gdtoa (aka new dtoa) implementation […]

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Common Problems 118970

Ubuntu 14.04 LTS High I/O Wait from ext4 Journal Saturation

🟠 High   ⏱ 5–30 min  Last verified: 18 September 2019 Affected versions: 14.04 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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Common Problems 115621

Stale NFS file handle errors after server-side changes

🟡 Medium   ⏱ 5–30 min  Last verified: 18 September 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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How to Install Packer Image Builder on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Install Packer Image Builder on Debian 9

Introduction Deploying install packer image builder on debian 9 on a Debian 9 Stretch machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. Prerequisites You will […]

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Common Problems 113100

Windows Server 2016 — VLAN mismatch causes intermittent network reachability — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 18 September 2019 Affected versions: Windows Server 2016 📖 ~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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Ubuntu 18.04 — patch — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — patch — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 18 September 2019 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4071-1 Related CVEs: CVE-2019-13636 CVE-2019-13638 Upstream summary: It was discovered that Patch incorrectly handled certain files. An attacker could possibly use this issue to access sensitive information. (CVE-2019-13636) It was […]

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Ubuntu 16.04 — libmspack — multiple vulnerabilities (9 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — libmspack — multiple vulnerabilities (9 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 18 September 2019 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4066-1 Related CVEs: CVE-2019-1010305 CVE-2018-18584 CVE-2018-18585 CVE-2018-14679 CVE-2018-14680 CVE-2018-14681 CVE-2018-14682 CVE-2017-11423  +1 more Upstream summary: It was discovered that libmspack incorrectly handled certain CHM files. A remote attacker could possibly […]

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Common Problems 113064

Windows Server 2016 — AD Recycle Bin recovery needed to restore accidentally deleted user object — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 18 September 2019 Affected versions: Windows Server 2016 📖 ~2 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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