Fix Prevention

How to Configure Audit Policy on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Configure Audit Policy on Windows Server 2012 R2

How to Configure Audit Policy on Windows Server 2012 R2 A well-configured audit policy is the foundation of security monitoring and forensic investigation on Windows Server 2012 R2. Audit policies generate security event log entries when specific activities occur — such as logon attempts, privilege use, object access, or policy changes. Windows Server 2012 R2 […]

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How to Set Up a DevSecOps Pipeline on SLES 12 — step-by-step SUSE Linux Enterprise 12 tutorial on Progressive Robot

How to Set Up a DevSecOps Pipeline on SLES 12

Introduction This tutorial covers How to Set Up a DevSecOps Pipeline on SLES 12 on SLES 12. SLES 12 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Prerequisites Ensure your SLES 12 system is up to date: […]

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FreeBSD 12 — mutt-devel-lite — security advisory — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — mutt-devel-lite — security advisory — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 3 July 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: mutt — Remote Buffer Overflow Vulnerability Upstream summary: SecurityFocus reports: Mutt is prone to a remote buffer-overflow vulnerability. This issue is due to the application's failure to properly bounds-check user-supplied […]

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How to Configure DNS Logging and Diagnostics on Windows Server 2019 — step-by-step Windows Server 2019 tutorial on Progressive Robot

How to Configure DNS Logging and Diagnostics on Windows Server 2019

Introduction to DNS Logging and Diagnostics on Windows Server 2019 DNS logging and diagnostics are essential for troubleshooting resolution failures, detecting security threats, meeting compliance requirements, and understanding traffic patterns on your network. Windows Server 2019 provides two distinct logging mechanisms for DNS: the Windows Event Log (structured event data, always on) and the DNS […]

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FreeBSD 12 — opus-tools — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — opus-tools — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 3 July 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: vorbis-tools, opus-tools — multiple vulnerabilities Related CVEs: CVE-2014-9638 CVE-2014-9639 CVE-2015-6749 Upstream summary: Paris Zoumpouloglou reports: I discovered an integer overflow issue in oggenc, related to the number of channels in […]

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FreeBSD 12 — scponly — security advisory — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — scponly — security advisory — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 3 July 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: scponly — local privilege escalation exploits Upstream summary: Max Vozeler reports: If ALL the following conditions are true, administrators using scponly-4.1 or older may be at risk of a local […]

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openSUSE Tumbleweed — prboom-plus — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — prboom-plus — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2020:0807-1 (see also SUSE bugzilla) Related CVEs: CVE-2019-20797 Upstream summary: An issue was discovered in e6y prboom-plus 2.5.1.5. There is a buffer overflow in client and server code responsible for handling received […]

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How to Configure /etc/hosts, /etc/resolv.conf and DNS Resolution on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Configure /etc/hosts, /etc/resolv.conf and DNS Resolution on RHEL 8

Reliable name resolution is essential for almost every networked service on a Linux server. Red Hat Enterprise Linux 8 gives you several places to configure how hostnames are resolved: the static /etc/hosts file, the resolver configuration in /etc/resolv.conf, the look-up order defined in /etc/nsswitch.conf, and DNS settings managed through NetworkManager. Knowing how these layers interact […]

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Ubuntu 16.04 — exempi — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — exempi — multiple vulnerabilities (8 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 3 July 2019 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-3668-1 Related CVEs: CVE-2017-18233 CVE-2017-18234 CVE-2017-18236 CVE-2017-18238 CVE-2018-7728 CVE-2018-7729 CVE-2018-7730 CVE-2018-7731 Upstream summary: It was discovered that Exempi incorrectly handled certain media files. If a user or automated system were […]

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Common Problems 118598

Cloud-init stalls first boot networking on cloned images

🟡 Medium   ⏱ 5–30 min  Last verified: 2 July 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 & Cross-Refs References & Further […]

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