2021 - Page 537 of 759

openSUSE Tumbleweed — polkit — multiple vulnerabilities (12 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — polkit — multiple vulnerabilities (12 CVEs) — patch and remediation guide

  • April 20, 2021
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2022:0190-1 (see also SUSE bugzilla) Related CVEs: CVE-2021-4034 CVE-2021-3560 CVE-2010-0750 CVE-2011-1485 CVE-2015-3255 CVE-2015-3256 CVE-2018-19788 CVE-2019-6133  +4 more Upstream summary: A local privilege escalation vulnerability was found on polkit's pkexec utility. The pkexec […]

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How To Install Web Apps Using Cloudron on Ubuntu 18.04 — step-by-step Linux tutorial on Progressive Robot

How To Install Web Apps Using Cloudron on Ubuntu 18.04

  • April 20, 2021
  • Linux
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Cloudron is a platform that streamlines the installation and management of apps, like WordPress, Rocket.Chat, Nextcloud, GitLab, OpenVPN, and more, to your server. A key benefit of using Cloudron is that it performs end-to-end deployment of apps. In this tutorial, you’ll install Cloudron on your server then deploy a WordPress site, as an example, to experience how Cloudron performs complete deployment automation.

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Debian 10 — ldb — vulnerability — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — ldb — vulnerability — patch and remediation guide

  • April 20, 2021
  • Linux
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🟢 Low   ⏱ 5–15 min  Last verified: 20 April 2021 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-10730 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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Arch Linux — matrix-appservice-irc — vulnerability — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — matrix-appservice-irc — vulnerability — patch and remediation guide

  • April 20, 2021
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-202106-51 Related CVEs: CVE-2021-32659 Upstream summary: Type: insufficient validation. Status: Fixed. Affected: 0.26.1-1. Fixed in: 0.27.0-1. Group: AVG-2076. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis […]

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Ubuntu 16.04 — tomcat7 — multiple vulnerabilities (15 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — tomcat7 — multiple vulnerabilities (15 CVEs) — patch and remediation guide

  • April 20, 2021
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 20 April 2021 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7282-1 Related CVEs: CVE-2017-12616 CVE-2017-12617 CVE-2019-0221 CVE-2020-9484 CVE-2021-25329 CVE-2016-5388 CVE-2018-1336 CVE-2015-5174  +7 more Upstream summary: It was discovered that Tomcat incorrectly handled being configured with HTTP PUTs enabled. A remote […]

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

Oracle Linux 8 — olcne — vulnerability — patch and remediation guide (ELSA-2021-9525)

  • April 20, 2021
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 20 April 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-9525 Related CVEs: CVE-2021-32781 CVE-2021-32778 CVE-2021-32777 CVE-2021-32779 CVE-2021-32780 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative […]

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Arch Linux — libssh — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — libssh — multiple vulnerabilities (2 CVEs) — patch and remediation guide

  • April 20, 2021
  • Linux
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🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-201810-10 Related CVEs: CVE-2018-10933 CVE-2020-1730 Upstream summary: Type: authentication bypass. Status: Fixed. Affected: 0.8.3-1. Fixed in: 0.8.4-1. Group: AVG-780. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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How to Configure Huge Pages for Database Performance on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Configure Huge Pages for Database Performance on RHEL 8

  • April 20, 2021
  • Linux
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Huge pages reduce the overhead of virtual memory management by using larger memory page sizes — typically 2 MB instead of the default 4 KB. For memory-intensive databases such as Oracle, PostgreSQL, and MySQL, huge pages eliminate millions of Translation Lookaside Buffer (TLB) misses per second, lower page table walk overhead, and prevent the kernel […]

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