chris

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

FreeBSD 12 — vinagre — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 27 April 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: vinagre — format string vulnerability Related CVEs: CVE-2008-5660 Upstream summary: CORE Security Technologies reports: A format string error has been found on the vinagre_utils_show_error() function that can be exploited via […]

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How to Configure Virtual Network Peering on Windows Server 2016 — step-by-step Windows Server 2016 tutorial on Progressive Robot

How to Configure Virtual Network Peering on Windows Server 2016

How to Set Up Windows Server 2016 Virtual Network Peering Virtual network peering allows two separate virtual networks within a Windows Server 2016 SDN environment to communicate with each other as if they were a single network, without the need to route traffic through a gateway or external device. This is analogous to VNet peering […]

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How To Protect SSH with Fail2Ban on Ubuntu 20.04 — step-by-step Linux tutorial on Progressive Robot

How To Protect SSH with Fail2Ban on Ubuntu 20.04

Fail2ban is a service that can be run on your server to dynamically block clients that repeatedly fail to authenticate correctly with your services . This can help mitigate the affect of brute force attacks and illegitimate users of your services. In this guide, we’ll demonstrate how to install and configure fail2ban to protect SSH on an Ubuntu 20.04 server.

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

FreeBSD 12 — nas — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 27 April 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: nas — multiple vulnerabilities Related CVEs: CVE-2013-4256 CVE-2013-4257 CVE-2013-4258 Upstream summary: Hamid Zamani reports: multiple security problems (buffer overflows, format string vulnerabilities and missing input sanitising), which could lead to […]

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Debian 9 — twig — vulnerability — patch and remediation guide — diagnosis and fix on Debian 9

Debian 9 — twig — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 27 April 2020 Affected versions: Debian 9 (stretch) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-9942 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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Amazon Linux 2 — glade — vulnerability — patch and remediation guide — diagnosis and fix on Amazon Linux 2

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

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2-2024-2488 Related CVEs: CVE-2020-36774 Upstream summary: plugins/gtk+/glade-gtk-box.c in GNOME Glade before 3.38.1 and 3.39.x before 3.40.0 mishandles widget rebuilding for GladeGtkBox, leading to a denial of service (application crash). (CVE-2020-36774) […]

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Ubuntu 18.04 — jquery — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — jquery — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 27 April 2020 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7622-1 Related CVEs: CVE-2020-11023 CVE-2019-11358 CVE-2020-11022 CVE-2012-6708 Upstream summary: It was discovered that jQuery did not correctly handle HTML tags. An attacker could possibly use this issue to execute a […]

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Common Problems 121669

Debian 9 Locale Misconfiguration Causes Perl Warning

🟢 Low   ⏱ 5–30 min  Last verified: 26 April 2020 Affected versions: Debian 9 📖 ~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 115107

Kdump Service Enabled but Crash Dumps Not Generated

🟡 Medium   ⏱ 5–30 min  Last verified: 26 April 2020 📖 ~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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