Operations

Debian 11 — almanah — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — almanah — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 29 October 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2013-1853 Upstream summary: Almanah Diary 0.9.0 and 0.10.0 does not encrypt the database when closed, which allows local users to obtain sensitive information by reading the database. Table […]

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Debian 11 — glibc — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — glibc — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 29 October 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-1999-0199 CVE-2002-0391 CVE-2002-0651 CVE-2002-0684 CVE-2002-1146 CVE-2003-0028 CVE-2003-0689 CVE-2004-0968  +12 more Upstream summary: manual/search.texi in the GNU C Library (aka glibc) before 2.2 lacks a statement about the unspecified […]

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How to Write Ansible Playbooks for Server Automation on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Write Ansible Playbooks for Server Automation on RHEL 9

Ansible playbooks are YAML files that describe the desired state of a set of managed servers using a series of tasks. Advanced playbook authoring goes beyond simple task lists to include: roles (reusable, shareable task bundles with a standard directory structure), handlers (tasks triggered only when a change occurs, such as restarting Nginx only when […]

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openSUSE Tumbleweed — ruby3.1-rubygem-puma — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — ruby3.1-rubygem-puma — multiple vulnerabilities (4 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-SU-2021:2761-1 (see also SUSE bugzilla) Related CVEs: CVE-2021-29509 CVE-2022-24790 CVE-2022-23634 CVE-2021-41136 Upstream summary: Puma is a concurrent HTTP 1.1 server for Ruby/Rack applications. The fix for CVE-2019-16770 was incomplete. The original fix […]

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Common Problems 117040

Ubuntu 22.04 LTS Nginx Fails to Reload Because of Duplicate Server Name

🟡 Medium   ⏱ 5–30 min  Last verified: 28 October 2022 📖 ~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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Debian 11 — node-browserslist — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — node-browserslist — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 28 October 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2021-23364 Upstream summary: The package browserslist from 4.0.0 and before 4.16.5 are vulnerable to Regular Expression Denial of Service (ReDoS) during parsing of queries. Table of contents Symptom […]

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FreeBSD 12 — py37-dparse — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — py37-dparse — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 28 October 2022 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: py-dparse — REDoS vulnerability Related CVEs: CVE-2022-39280 Upstream summary: yeisonvargasf reports: dparse is a parser for Python dependency files. dparse in versions before 0.5.2 contain a regular expression that is […]

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Common Problems 115028

RHEL 8 Dracut Initramfs Missing Drivers After Storage Change

🟡 Medium   ⏱ 5–30 min  Last verified: 28 October 2022 📖 ~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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Debian 11 — snort — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — snort — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 28 October 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-3299 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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