Security Hardening

FreeBSD 13 — tla — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — tla — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 17 May 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: neon format string vulnerabilities Related CVEs: CVE-2004-0179 Upstream summary: Greuff reports that the neon WebDAV client library contains several format string bugs within error reporting code. A malicious server may […]

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openSUSE Tumbleweed — groovy — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — groovy — 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-2020:2367-1 (see also SUSE bugzilla) Related CVEs: CVE-2020-17521 Upstream summary: Apache Groovy provides extension methods to aid with creating temporary directories. Prior to this fix, Groovy's implementation of those extension methods was […]

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Ubuntu 16.04 — libhibernate3-java — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — libhibernate3-java — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 17 May 2021 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6845-1 Related CVEs: CVE-2020-25638 Upstream summary: It was discovered that Hibernate incorrectly handled certain inputs with unsanitized literals. If a user or an automated system were tricked into opening a […]

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Ubuntu 20.04 — linux-azure-5.8 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — linux-azure-5.8 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 17 May 2021 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5120-1 Related CVEs: CVE-2019-19449 CVE-2020-26541 CVE-2020-36311 CVE-2021-22543 CVE-2021-3612 CVE-2021-3759 CVE-2021-38199 CVE-2021-38207  +12 more Upstream summary: It was discovered that the f2fs file system in the Linux kernel did not properly […]

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FreeBSD 13 — ja-w3m-img — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — ja-w3m-img — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 17 May 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: w3m – multiple vulnerabilities Related CVEs: CVE-2006-6772 CVE-2016-9422 CVE-2016-9423 CVE-2016-9424 CVE-2016-9425 CVE-2016-9426 CVE-2016-9428 CVE-2016-9429  +12 more Upstream summary: Tatsuya Kinoshita reports: CVE-2018-6196 * table.c: Prevent negative indent value in feed_table_block_tag(). […]

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FreeBSD 13 — py37-psutil — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — py37-psutil — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 16 May 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: py-psutil — double free vulnerability Related CVEs: CVE-2019-18874 Upstream summary: ret2libc reports: psutil (aka python-psutil) through 5.6.5 can have a double free. This occurs because of refcount mishandling within a […]

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Oracle Linux 8 — mariadb:10.3 — security and stability fixes — required update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — mariadb:10.3 — security and stability fixes — required update (ELSA-2022-1556)

🟡 Medium   ⏱ 10–30 min  Last verified: 16 May 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-1556 Related CVEs: CVE-2021-35604 CVE-2021-46662 CVE-2021-46657 CVE-2021-2154 CVE-2021-46666 CVE-2021-46667 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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Common Problems 117924

Ubuntu 18.04 Bluetooth device not detected

🟡 Medium   ⏱ 5–30 min  Last verified: 16 May 2021 📖 ~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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FreeBSD 13 — konversation — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — konversation — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 16 May 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: konversation — crash in IRC message parsing Related CVEs: CVE-2005-0129 CVE-2005-0130 CVE-2005-0131 CVE-2014-8483 CVE-2017-15923 Upstream summary: KDE reports: Konversation has support for colors in IRC messages. Any malicious user connected […]

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How to Set Up Lynis Security Auditing on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Set Up Lynis Security Auditing on Oracle Linux 8

Introduction How to Set Up Lynis Security Auditing on Oracle Linux 8 on Oracle Linux 8 provides administrators with a robust, enterprise-ready workflow that integrates cleanly with systemd, SELinux, firewalld, and the modern AppStream module system. In this tutorial we will walk through every step required, from package installation to verification, so that the resulting […]

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