April 2021 - Page 56 of 62

Ubuntu 20.04 — yara — multiple vulnerabilities (17 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — yara — multiple vulnerabilities (17 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 4 April 2021 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8080-1 Related CVEs: CVE-2018-19976 CVE-2017-9304 CVE-2018-19974 CVE-2017-8294 CVE-2018-12034 CVE-2017-8929 CVE-2021-45429 CVE-2017-11328  +9 more Upstream summary: Kamil Frankowicz discovered that a number of YARA's functions generated memory exceptions when processing specially […]

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Ubuntu 16.04 — opendmarc — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — opendmarc — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 4 April 2021 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6356-1 Related CVEs: CVE-2020-12272 CVE-2020-12460 Upstream summary: Jianjun Chen, Vern Paxson and Jian Jiang discovered that OpenDMARC incorrectly handled certain inputs. If a user or an automated system were tricked […]

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Ubuntu 20.04 — node-tar — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — node-tar — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 4 April 2021 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5283-1 Related CVEs: CVE-2021-32803 Upstream summary: It was discovered that Tar for Node.js did not properly sanitize path inputs. An attacker could possibly use this issue to read arbitrary files, […]

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AlmaLinux 8 — ppp — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — ppp — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2020:0633 Related CVEs: CVE-2020-8597 Upstream summary: The ppp packages contain the Point-to-Point Protocol (PPP) daemon and documentation for PPP support. The PPP protocol provides a method for transmitting datagrams over serial point-to-point […]

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How To Manage RAID Arrays with mdadm on Ubuntu 16.04 — step-by-step Linux tutorial on Progressive Robot

How To Manage RAID Arrays with mdadm on Ubuntu 16.04

In this guide, we discuss how to use Linux’s mdadm utility to manage RAID arrays and perform day-to-day administrative tasks. We cover how to start, stop, or remove RAID arrays, how to find information about both the RAID device and the underlying storage components, and how to adjust the RAID size and and hot spares to existing arrays.

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Amazon Linux 2 — libgcrypt — vulnerability — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — libgcrypt — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2-2022-1769 Related CVEs: CVE-2021-33560 Upstream summary: A side-channel attack flaw was found in the way libgcrypt implemented Elgamal encryption. This flaw allows an attacker to decrypt parts of ciphertext encrypted […]

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How to Install and Configure cAdvisor for Container Monitoring on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Install and Configure cAdvisor for Container Monitoring on RHEL 7

How to Install and Configure cAdvisor for Container Monitoring on RHEL 7 cAdvisor (Container Advisor) is an open-source agent developed by Google that collects, aggregates, processes, and exports resource usage and performance metrics for running containers. It provides a real-time web UI and a Prometheus-compatible metrics endpoint, making it the standard solution for container observability […]

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How To Harden OpenSSH Client on Ubuntu 20.04 — step-by-step Linux tutorial on Progressive Robot

How To Harden OpenSSH Client on Ubuntu 20.04

When hardening SSH at the server side, the primary objective is to make it harder for malicious actors to access your server. However, hardening at the client side is very different, as instead you are working to defend and protect your SSH connection and client from various different threats. In this tutorial, you will harden your Ubuntu 20.04 OpenSSH client in order to help ensure that outgoing SSH connections are as secure as possible.

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