December 2021 - Page 49 of 71

Oracle Linux 8 — libarchive — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — libarchive — vulnerability — patch and remediation guide (ELSA-2022-0892)

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-0892 Related CVEs: CVE-2021-23177 CVE-2021-31566 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & […]

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How to calculate BLEU Score in Python? — step-by-step Python tutorial on Progressive Robot

How to calculate BLEU Score in Python?

Bleu score in Python is a metric that measures the goodness of Machine Translation models. Though originally it was designed for only translation models, now it is used for other [natural language processing applications](/community/tutorials/natural-language-processing-tasks) as well. The BLEU score compares a sentence against one or more reference sentences and tells how well does the candidate […]

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How to Install and Use Podman with systemd Socket Activation on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Install and Use Podman with systemd Socket Activation on RHEL 8

Podman is RHEL 8’s native container runtime and ships as a first-class package, offering full Docker CLI compatibility without requiring a background daemon running as root. One of its most powerful features on RHEL 8 is socket activation: systemd opens the Podman socket on demand, meaning the container engine only consumes resources when something actually […]

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FreeBSD 13 — qutebrowser — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — qutebrowser — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: qutebrowser — Reloading page with certificate errors shows a green URL Related CVEs: CVE-2018-10895 CVE-2020-11054 Upstream summary: Qutebrowser developers report: After a certificate error was overridden by the user, qutebrowser […]

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Oracle Linux 8 — TLS 1.3 not supported for NSS in FIPS Mode — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — TLS 1.3 not supported for NSS in FIPS Mode

🟠 High   ⏱ 5–30 min  Last verified: 25 May 2026 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: Oracle Bug OLRNT-notlssupport-fips 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 […]

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FreeBSD 12 — mailman-exim — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — mailman-exim — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: mailman < 2.1.38 — CSRF vulnerability of list mod or member against list admin page Related CVEs: CVE-2021-43331 CVE-2021-43332 CVE-2021-44227 Upstream summary: Mark Sapiro reports: A list moderator or list […]

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Common Problems 113989

RHEL 10 – nftables custom rules conflict with firewalld policies – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 19 May 2026 Affected versions: RHEL 10.0 RHEL 10.1 📖 ~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 […]

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How to Install FastAPI on CentOS Stream 9 — step-by-step CentOS Stream 9 tutorial on Progressive Robot

How to Install FastAPI on CentOS Stream 9

Introduction Setting up install fastapi on centos stream 9 on a CentOS Stream 9 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Install FastAPI on CentOS Stream 9, with all the commands you need, the SELinux and firewalld considerations to keep in mind, and […]

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Debian 11 — dbus-glib — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — dbus-glib — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2010-1172 CVE-2013-0292 Upstream summary: DBus-GLib 0.73 disregards the access flag of exported GObject properties, which allows local users to bypass intended access restrictions and possibly cause a denial […]

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How to Configure DHCP Server on IBM AIX 7.1 — step-by-step IBM AIX 7.1 tutorial on Progressive Robot

How to Configure DHCP Server on IBM AIX 7.1

Introduction IBM AIX 7.1 is the latest release of IBM’s enterprise-grade UNIX operating system, running on IBM Power Systems hardware. Known for its reliability, security, and performance in mission-critical environments, AIX 7.1 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to configure dhcp server on ibm aix 7.1 on IBM […]

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