Security Hardening

Oracle Linux 8 — grub2 security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — grub2 security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2022-2110)

🟢 Low   ⏱ 5–15 min  Last verified: 31 October 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-2110 Related CVEs: CVE-2021-3981 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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FreeBSD 13 — py310-impacket — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — py310-impacket — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 31 October 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: py-impacket — multiple path traversal vulnerabilities Related CVEs: CVE-2021-31800 Upstream summary: asolino reports: Multiple path traversal vulnerabilities exist in smbserver.py in Impacket through 0.9.22. An attacker that connects to a […]

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FreeBSD 13 — mutt-ng — security advisory — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — mutt-ng — security advisory — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 31 October 2021 Affected versions: FreeBSD 13 📖 ~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 Set Up Cockpit Web Console on SLES 15 — step-by-step SUSE Linux Enterprise 15 tutorial on Progressive Robot

How to Set Up Cockpit Web Console on SLES 15

Introduction This tutorial covers How to Set Up Cockpit Web Console on SLES 15 on SLES 15. SLES 15 (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 15 system is up to date: […]

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FreeBSD 13 — npm — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — npm — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 31 October 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: NPM — Multiple vulnerabilities Related CVEs: CVE-2019-16775 CVE-2019-16776 CVE-2019-16777 Upstream summary: NPM reports: Global node_modules Binary Overwrite Symlink reference outside of node_modules Arbitrary File Write Table of contents Symptom & […]

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Debian 11 — splitvt — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — splitvt — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 31 October 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2008-0162 Upstream summary: misc.c in splitvt 1.6.6 and earlier does not drop group privileges before executing xprop, which allows local users to gain privileges. Table of contents Symptom […]

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Debian 11 — openjfx — multiple vulnerabilities (13 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — openjfx — multiple vulnerabilities (13 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 31 October 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2015-4901 CVE-2015-4906 CVE-2015-4908 CVE-2015-4916 CVE-2016-3498 CVE-2017-10086 CVE-2017-10114 CVE-2018-2581  +5 more Upstream summary: Unspecified vulnerability in Oracle Java SE 8u60 allows remote attackers to affect confidentiality, integrity, and availability […]

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openSUSE Tumbleweed — python36-oletools — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — python36-oletools — vulnerability — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE security advisory Related CVEs: CVE-2021-27058 Upstream summary: Unknown. 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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How to Configure Samba on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Configure Samba on FreeBSD 13

Introduction FreeBSD 13 is a UNIX-derived operating system renowned for its network stack performance, ZFS integration, and Jail isolation primitives. Setting up configure samba on freebsd 13 on FreeBSD 13 follows the rc.conf/service(8) paradigm rather than systemd, which means enabling a service and configuring its startup options are done differently from any Linux distribution. This […]

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

Ubuntu 20.04 — tcmu — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 31 October 2021 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4707-1 Related CVEs: CVE-2021-3139 Upstream summary: It was discovered that TCMU lacked a check for transport-layer restrictions, allowing remote attackers to read or write files via directory traversal in an […]

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