April 2023 - Page 44 of 68

Common Problems 117953

Ubuntu 18.04 LTS swap thrashing causes severe slowdown

🟡 Medium   ⏱ 5–30 min  Last verified: 11 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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Common Problems 113568

Windows Server 2012 R2 — Windows Update Client reports package conflict between LCU and out-of-band fix — Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 11 April 2023 Affected versions: Windows Server 2012 R2 📖 ~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 Configure Apache with mod_pagespeed on SLES 12 — step-by-step SUSE Linux Enterprise 12 tutorial on Progressive Robot

How to Configure Apache with mod_pagespeed on SLES 12

Introduction This tutorial covers How to Configure Apache with mod_pagespeed on SLES 12 on SLES 12. SLES 12 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Prerequisites Ensure your SLES 12 system is up to date: zypper […]

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Common Problems 112457

Windows Server 2019 – MPIO path failover stalls due to HBA driver defects – Fix and Prevention

🟠 High   ⏱ 5–30 min  Last verified: 11 April 2023 Affected versions: Windows Server 2019 📖 ~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 — cyrus-sasl-sql — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — cyrus-sasl-sql — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 11 April 2023 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: cyrus-sasl — Escape password for SQL insert/update commands Related CVEs: CVE-2022-24407 Upstream summary: Cyrus SASL 2.1.x Release Notes New in 2.1.28 reports: Escape password for SQL insert/update commands. Table of […]

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Amazon Linux 2 — log4j — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — log4j — multiple vulnerabilities (7 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2-2022-1750 Related CVEs: CVE-2022-23302 CVE-2022-23305 CVE-2022-23307 CVE-2017-5645 CVE-2019-17571 CVE-2021-4104 CVE-2021-44228 Upstream summary: A flaw was found in the Java logging library Apache Log4j in version 1.x. JMSSink in Log4j 1.x […]

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Common Problems 111883

Windows Server 2022 – RDP session host hits max sessions unexpectedly – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 11 April 2023 Affected versions: Windows Server 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 […]

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Ubuntu 22.04 — apparmor — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — apparmor — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 11 April 2023 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7035-1 Related CVEs: CVE-2016-1585 https://bugs.launchpad.net/apparmor/+bug/1597017 Upstream summary: It was discovered that the AppArmor policy compiler incorrectly generated looser restrictions than expected for rules allowing mount operations. A local attacker could […]

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The unique() function in R programming — step-by-step DevOps tutorial on Progressive Robot

The unique() function in R programming

URL: https://www.progressiverobot.com/unique-function-r-programming/ The unique() function in R is used to eliminate or delete the duplicate values or the rows present in the vector, [data frame](/community/tutorials/data-frames-in-r-programming), or [matrix](/community/tutorials/matrix-operations-in-r) as well. The unique() function found its importance in the EDA (Exploratory Data Analysis) as it directly identifies and eliminates the duplicate values in the data. In this […]

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Oracle Linux 9 — thunderbird — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — thunderbird — vulnerability — patch and remediation guide (ELSA-2023-6191)

🟠 High   ⏱ 15–60 min  Last verified: 11 April 2023 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-6191 Related CVEs: CVE-2023-5721 CVE-2023-5730 CVE-2023-5725 CVE-2023-5728 CVE-2023-5732 CVE-2023-44488 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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