Logging Monitoring

openSUSE Tumbleweed — libmad0 — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — libmad0 — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2022:10169-1 (see also SUSE bugzilla) Related CVEs: CVE-2017-8373 CVE-2017-8374 Upstream summary: The mad_layer_III function in layer3.c in Underbit MAD libmad 0.15.1b allows remote attackers to cause a denial of service (heap-based buffer […]

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SLES 12 — ruby2.1-rubygem-excon — vulnerability — patch and remediation guide — diagnosis and fix on SLES 12

SLES 12 — ruby2.1-rubygem-excon — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 3 February 2020 Affected versions: SLES 12 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2020:2053-1 (see also SUSE bugzilla) Related CVEs: CVE-2019-16779 Upstream summary: In RubyGem excon before 0.71.0, there was a race condition around persistent connections, where a connection which is interrupted (such as by […]

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Oracle Linux 8 — python-reportlab — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — python-reportlab — vulnerability — patch and remediation guide (ELSA-2020-0201)

🟠 High   ⏱ 15–60 min  Last verified: 3 February 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-0201 Related CVEs: CVE-2019-17626 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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How to Manage Systemd Services and Units on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Manage Systemd Services and Units on RHEL 8

Systemd is the default init system on Red Hat Enterprise Linux 8, responsible for managing services, sockets, timers, and other units from boot through shutdown. Understanding how to control systemd services is essential for anyone administering RHEL 8 servers in production. This tutorial covers the core systemctl commands, how to inspect logs with journalctl, and […]

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Common Problems 118530

Ubuntu 16.04 failed to fetch repository indexes

🟡 Medium   ⏱ 5–30 min  Last verified: 2 February 2020 📖 ~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 Configure Disk Quotas on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Configure Disk Quotas on FreeBSD 12 (FREEBSD-12-2)

Introduction This guide explains how to Configure Disk Quotas on FreeBSD 12 on FreeBSD 12. FreeBSD uses the pkg(8) binary package manager, rc.conf(5) for service startup configuration, and pf(4) as its primary packet filter. There is no SELinux or AppArmor — instead, FreeBSD provides the MAC (Mandatory Access Control) framework and Capsicum for fine-grained privilege […]

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FreeBSD 12 — lesstif — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — lesstif — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 2 February 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: xpm — image decoding vulnerabilities Related CVEs: CVE-2004-0687 CVE-2004-0688 Upstream summary: Chris Evans discovered several vulnerabilities in the libXpm image decoder: A stack-based buffer overflow in xpmParseColors An integer overflow […]

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Common Problems 115526

RHEL 7 firewalld Zone Mismatch on Primary NIC

🟡 Medium   ⏱ 5–30 min  Last verified: 2 February 2020 Affected versions: RHEL 7 📖 ~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 — libgcrypt — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — libgcrypt — multiple vulnerabilities (7 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 2 February 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: libgcrypt — ECDSA timing attack Related CVEs: CVE-2013-4242 CVE-2015-7511 CVE-2016-6313 CVE-2017-0379 CVE-2017-7526 CVE-2018-0495 CVE-2019-13627 Upstream summary: GnuPG reports: Mitigate an ECDSA timing attack. Table of contents Symptom & Impact Environment […]

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Alpine Linux edge — binutils-cross-embedded — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — binutils-cross-embedded — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 2.37-r0 📖 ~4 min read  •  Source: Alpine secdb entry — binutils-cross-embedded 2.37-r0 Related CVEs: CVE-2020-35448 Upstream summary: Alpine community repository for vedge ships binutils-cross-embedded 2.37-r0 which addresses CVE-2020-35448. Table of contents Symptom & Impact Environment […]

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