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Common Problems 118992

Ubuntu 14.04 LTS swap thrashing causes severe performance degradation

🟠 High   ⏱ 5–30 min  Last verified: 8 January 2022 Affected versions: 14.04 📖 ~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 […]

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IBM AIX 7.3 — CVE-1999-0513 — denial of service — patch and remediation guide — diagnosis and fix on IBM AIX 7.3

IBM AIX 7.3 — CVE-1999-0513 — denial of service — patch and remediation guide

🟡 Medium   ⏱ 15–45 min  Last verified: 8 January 2022 Affected versions: IBM AIX 7.3 📖 ~4 min read  •  Source: NVD CVE-1999-0513, IBM PSIRT advisory page CVE: CVE-1999-0513 NVD summary: ICMP messages to broadcast addresses are allowed, allowing for a Smurf attack that can cause a denial of service. References: exchange.xforce.ibmcloud.com/vulnerabilities/CVE   exchange.xforce.ibmcloud.com/vulnerabilities/CVE […]

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How to Configure Multipath I/O on CentOS Stream 9 — step-by-step CentOS Stream 9 tutorial on Progressive Robot

How to Configure Multipath I/O on CentOS Stream 9

Introduction CentOS Stream 9 ships with a stable, security-hardened base that makes deploying configure multipath i/o on centos stream 9 both straightforward and auditable. This tutorial covers the complete procedure for how to Configure Multipath I/O on CentOS Stream 9, including dnf module streams where applicable, systemd unit management, and the firewalld rules required for […]

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FreeBSD 13 — p5-DBI — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — p5-DBI — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 8 January 2022 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: p5-DBI — insecure temporary file creation vulnerability Related CVEs: CAN-2005-0077 Upstream summary: Javier Fernández-Sanguino Peña reports: The DBI library, the Perl5 database interface, creates a temporary PID file in an […]

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Common Problems 118116

Ubuntu 18.04 LTS – PHP-FPM pool crashes under load with memory limit issues – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 8 January 2022 Affected versions: Ubuntu 18.04 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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FreeBSD 13 — taglib — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — taglib — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 8 January 2022 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: taglib — heap-based buffer over-read via a crafted audio file Related CVEs: CVE-2018-11439 Upstream summary: Webin security lab – dbapp security Ltd reports: The TagLib::Ogg::FLAC::File::scan function in oggflacfile.cpp in TagLib […]

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What is the Private Cloud? — step-by-step DevOps tutorial on Progressive Robot

What is the Private Cloud?

The term “private cloud” refers to cloud services that are owned and managed by the organization that uses them and available only to the organization’s employees and customers. Private clouds allow organizations to exert greater control over their computing environment and their stored data, which can be necessary for organizations in highly-regulated industries.

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FreeBSD 13 — bsh — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — bsh — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 8 January 2022 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: bsh — remote code execution vulnerability Related CVEs: CVE-2016-2510 Upstream summary: Stian Soiland-Reyes reports: This release fixes a remote code execution vulnerability that was identified in BeanShell by Alvaro Muñoz […]

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How to Configure GEOM Mirroring on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Configure GEOM Mirroring on FreeBSD 13

Introduction This guide explains how to Configure GEOM Mirroring on FreeBSD 13 on FreeBSD 13. 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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