Linux

Alpine Linux edge — ntpsec — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — ntpsec — multiple vulnerabilities (6 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 1.2.2a-r0 📖 ~4 min read  •  Source: Alpine secdb entry — ntpsec 1.2.2a-r0 Related CVEs: CVE-2023-4012 CVE-2021-22212 CVE-2019-6442 CVE-2019-6443 CVE-2019-6444 CVE-2019-6445 Upstream summary: Alpine community repository for vedge ships ntpsec 1.2.2a-r0 which addresses CVE-2023-4012. Table of […]

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Common Problems 117615

Ubuntu 20.04 LTS CIFS Mount Fails with Permission Denied

🟡 Medium   ⏱ 5–30 min  Last verified: 18 April 2023 📖 ~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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Gentoo Linux — sys-apps/less — vulnerability — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — sys-apps/less — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202310-11 Related CVEs: CVE-2022-46663 Upstream summary: less suffered from a flaw in its terminal escape sequence handling which made its filtering incomplete. Table of contents Symptom & Impact Environment & Reproduction Root […]

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How to Monitor Nginx Access Logs with GoAccess on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Monitor Nginx Access Logs with GoAccess on RHEL 9

GoAccess is a fast, open-source real-time web log analyzer that runs entirely in the terminal or generates self-contained HTML reports without requiring a separate database or web framework. On RHEL 9, it can parse Nginx access logs in seconds to surface the metrics that matter most — unique visitors, top requested URLs, HTTP response code […]

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Debian 11 — libxerces2-java — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — libxerces2-java — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 18 April 2023 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2009-2625 CVE-2012-0881 CVE-2022-23437 Upstream summary: XMLScanner.java in Apache Xerces2 Java, as used in Sun Java Runtime Environment (JRE) in JDK and JRE 6 before Update 15 and JDK […]

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

openSUSE Tumbleweed — plantuml — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2022-1379 CVE-2022-1231 Upstream summary: URL Restriction Bypass in GitHub repository plantuml/plantuml prior to V1.2022.5. An attacker can abuse this to bypass URL restrictions that are […]

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Debian 11 — golang-golang-x-text — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — golang-golang-x-text — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 18 April 2023 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-14040 CVE-2020-28851 CVE-2020-28852 CVE-2021-38561 CVE-2022-32149 Upstream summary: The x/text package before 0.3.3 for Go has a vulnerability in encoding/unicode that could lead to the UTF-16 decoder entering an […]

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Ubuntu 20.04 — rsyslog — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — rsyslog — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 18 April 2023 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5404-1 Related CVEs: CVE-2022-24903 Upstream summary: Pieter Agten discovered that Rsyslog incorrectly handled certain requests. An attacker could possibly use this issue to cause a crash. Table of contents Symptom […]

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Gentoo Linux — dev-ruby/rack — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — dev-ruby/rack — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202310-18 Related CVEs: CVE-2022-30122 CVE-2022-30123 Upstream summary: Multiple vulnerabilities have been discovered in Rack. Please review the CVE identifiers referenced below for details. Table of contents Symptom & Impact Environment & Reproduction […]

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How To Set Up a Production Elasticsearch Cluster on CentOS 7 — step-by-step Linux tutorial on Progressive Robot

How To Set Up a Production Elasticsearch Cluster on CentOS 7

Elasticsearch is a popular open source search server that is used for real-time distributed search and analysis of data. When used for anything other than development, Elasticsearch should be deployed across multiple servers as a cluster, for the best performance, stability, and scalability.

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