April 2021 - Page 41 of 62

Common Problems 118605

Ubuntu 16.04 LTS iptables rules lost after reboot

🟠 High   ⏱ 5–30 min  Last verified: 11 April 2021 Affected versions: 16.04 📖 ~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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How to Enable HTTP/2 in Nginx on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Enable HTTP/2 in Nginx on Oracle Linux 8

Introduction Oracle Linux 8 ships with a stable, security-hardened base that makes deploying enable http/2 in nginx on oracle linux 8 both straightforward and auditable. This tutorial covers the complete procedure for how to Enable HTTP/2 in Nginx on Oracle Linux 8, including dnf module streams where applicable, systemd unit management, and the firewalld rules […]

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FreeBSD 12 — kafka — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — kafka — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 11 April 2021 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: kafka — Denial Of Service vulnerability Related CVEs: CVE-2020-36518 Upstream summary: NIST reports: jackson-databind before 2.13.0 allows a Java StackOverflow exception and denial of service via a large depth of […]

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Ubuntu 20.04 — squashfs-tools — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — squashfs-tools — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 11 April 2021 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5078-3 Related CVEs: CVE-2021-41072 CVE-2021-40153 Upstream summary: USN-5078-1 fixed a vulnerability in Squashfs-Tools. That update was incomplete and could still result in Squashfs-Tools mishandling certain malformed SQUASHFS files. This update […]

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Ubuntu 20.04 — linux-oem-5.13 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — linux-oem-5.13 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 11 April 2021 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5265-1 Related CVEs: CVE-2020-27820 CVE-2021-3640 CVE-2021-3752 CVE-2021-3772 CVE-2021-4001 CVE-2021-4090 CVE-2021-4093 CVE-2021-4202  +12 more Upstream summary: Jeremy Cline discovered a use-after-free in the nouveau graphics driver of the Linux kernel during […]

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如何在Python3中构造“for循环” — step-by-step Python tutorial on Progressive Robot

如何在Python3中构造“for循环”

在计算机编程中,运用循环语句可以让我们自动化、重复多次执行相似的任务。在这个教程里,我们将介绍Python中的for循环 一个for循环,对于“代码的重复执行”的实现,是基于循环计数器或循环变量。这意味着:最常使用for循环的情况,是在进入循环之前已经知道需要重复的次数。这与“以终止条件决定何时终止循环”的 while 循环 不同。

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How to Configure ZFS Encryption on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Configure ZFS Encryption on FreeBSD 12

Introduction Deploying configure zfs encryption on freebsd 12 on a FreeBSD 12 machine differs from Linux in several important ways: packages come from the FreeBSD Ports Collection or the binary pkg repository, services are registered in /etc/rc.conf via sysrc(8), and firewall rules are written in pf.conf(5) syntax. This tutorial stays entirely within the standard base […]

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How to Install Anbox on Linux Mint? — step-by-step Linux tutorial on Progressive Robot

How to Install Anbox on Linux Mint?

URL: https://www.progressiverobot.com/install-anbox-on-linux-mint/ This article goes over the steps to install Anbox on Linux Mint. Ever wondered how cool it would be to be able to run android applications on your Linux system? Well, Anbox helps you do exactly that. Anbox is short for Android in a box and it is exactly what it sounds like! […]

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Oracle Linux 8 — python39:3.9 and python39-devel:3.9 — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — python39:3.9 and python39-devel:3.9 — vulnerability — patch and remediation guide (ELSA-2022-1763)

🟡 Medium   ⏱ 10–30 min  Last verified: 11 April 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-1763 Related CVEs: CVE-2021-43818 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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