chris

Ubuntu 20.04 — oddjob — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — oddjob — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 22 June 2021 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5169-1 Related CVEs: CVE-2020-10737 Upstream summary: Matthias Gerstner discovered that there was a race condition in the mkhomedir tool shipped with the oddjob package. An authenticated attacker could use this […]

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How to use the execvp() function in C/C++ — step-by-step Programming tutorial on Progressive Robot

How to use the execvp() function in C/C++

In this article, we'll take a look at using the execvp() function in C / C++. In UNIX, the execvp() function is very useful if you want to run another program using our C program. NOTE: This function is applicable only to UNIX based Operating Systems. It doesn't work on Windows Let's take a look […]

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SLES 15 — go1.15 — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — go1.15 — multiple vulnerabilities (8 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 22 June 2021 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory RHSA-2024:10289 (see also SUSE bugzilla) Related CVEs: CVE-2021-33198 CVE-2021-33196 CVE-2021-27918 CVE-2021-31525 CVE-2021-33195 CVE-2021-33197 CVE-2021-34558 CVE-2021-36221 Upstream summary: In Go before 1.15.13 and 1.16.x before 1.16.5, there can be a panic for a […]

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How to Set Up ModSecurity WAF with Apache on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Set Up ModSecurity WAF with Apache on FreeBSD 13

Introduction This guide explains how to Set Up ModSecurity WAF with Apache 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 […]

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Oracle Linux 8 — kernel — security and stability fixes — required update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — kernel — security and stability fixes — required update (ELSA-2021-3447)

🟠 High   ⏱ 15–60 min  Last verified: 21 June 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-3447 Related CVEs: CVE-2021-37576 CVE-2021-38201 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & […]

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FreeBSD 13 — libevhtp — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — libevhtp — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 21 June 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: oniguruma — multiple vulnerabilities Related CVEs: CVE-2017-9224 CVE-2017-9226 CVE-2017-9227 CVE-2017-9228 Upstream summary: the PHP project reports: A stack out-of-bounds read occurs in match_at() during regular expression searching. A logical error […]

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How to Monitor ZFS Pool Health on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Monitor ZFS Pool Health on FreeBSD 13

Introduction Deploying monitor zfs pool health on freebsd 13 on a FreeBSD 13 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 […]

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Common Problems 112475

Windows Server 2019 — Install-Module fails because NuGet package provider is missing or outdated — Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 21 June 2021 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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