Troubleshooting

How to Configure OpenDKIM with Postfix on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Configure OpenDKIM with Postfix on Debian 10

Introduction Deploying configure opendkim with postfix on debian 10 on a Debian 10 Buster machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. Prerequisites You will […]

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FreeBSD 12 — openssl-beta-overwrite-base — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — openssl-beta-overwrite-base — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 18 February 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: openssl — potential SSL 2.0 rollback Related CVEs: CVE-2005-2969 Upstream summary: Vulnerability: Such applications are affected if they use the option SSL_OP_MSIE_SSLV2_RSA_PADDING. This option is implied by use of SSL_OP_ALL, […]

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Ubuntu 18.04 — libmspack — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — libmspack — multiple vulnerabilities (7 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 18 February 2020 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4066-1 Related CVEs: CVE-2019-1010305 CVE-2018-18584 CVE-2018-18585 CVE-2018-14679 CVE-2018-14680 CVE-2018-14681 CVE-2018-14682 Upstream summary: It was discovered that libmspack incorrectly handled certain CHM files. A remote attacker could possibly use this issue […]

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How to Configure Windows Server 2019 with SCCM Updates — step-by-step Windows Server 2019 tutorial on Progressive Robot

How to Configure Windows Server 2019 with SCCM Updates

How to Configure Windows Server 2019 with SCCM Updates Microsoft Endpoint Configuration Manager (SCCM), now branded as Microsoft Endpoint Configuration Manager (MECM), is the enterprise-grade solution for software update management on Windows Server 2019 at scale. Unlike WSUS, SCCM adds orchestration capabilities including deployment rings, maintenance windows, phased deployments, and deep integration with the Configuration […]

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openSUSE Tumbleweed — obex-data-server — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — obex-data-server — vulnerability — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory SUSE-SR:2008:019 (see also SUSE bugzilla) Related CVEs: CVE-2008-2374 Upstream summary: src/sdp.c in bluez-libs 3.30 in BlueZ, and other bluez-libs before 3.34 and bluez-utils before 3.34 versions, does not validate string length fields […]

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Ubuntu 16.04 — p11-kit — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — p11-kit — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 18 February 2020 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4677-1 Related CVEs: CVE-2020-29361 CVE-2020-29362 CVE-2020-29363 Upstream summary: David Cook discovered that p11-kit incorrectly handled certain memory operations. An attacker could use this issue to cause p11-kit to crash, resulting […]

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Common Problems 121170

Locale Misconfiguration Breaks Scripts

🟢 Low   ⏱ 5–30 min  Last verified: 17 February 2020 Affected versions: Debian 10 📖 ~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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Common Problems 121105

Debian 10 Journald Grows Too Large and Consumes Disk

🟡 Medium   ⏱ 5–30 min  Last verified: 17 February 2020 Affected versions: Debian 10 📖 ~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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Alpine Linux edge — libgsf — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — libgsf — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 1.14.41-r0 📖 ~4 min read  •  Source: Alpine secdb entry — libgsf 1.14.41-r0 Related CVEs: CVE-2016-9888 Upstream summary: Alpine community repository for vedge ships libgsf 1.14.41-r0 which addresses CVE-2016-9888. Table of contents Symptom & Impact Environment […]

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How to Detect Rootkits with rkhunter on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Detect Rootkits with rkhunter on FreeBSD 12

Introduction This guide explains how to Detect Rootkits with rkhunter on FreeBSD 12 on FreeBSD 12. 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 for fine-grained […]

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