Systemd Services

Amazon Linux 2 — slf4j — vulnerability — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — slf4j — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2-2018-999 Related CVEs: CVE-2018-8088 Upstream summary: Deserialisation vulnerability in EventData constructor can allow for arbitrary code execution: An XML deserialization vulnerability was discovered in slf4j's EventData which accepts anXML serialized […]

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Ubuntu 14.04 — openjdk-7 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 14.04

Ubuntu 14.04 — openjdk-7 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 2 December 2019 Affected versions: Ubuntu 14.04 (trusty) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-3942-1 Related CVEs: CVE-2019-2422 CVE-2018-3136 CVE-2018-3139 CVE-2018-3149 CVE-2018-3169 CVE-2018-3180 CVE-2018-2952 CVE-2018-2790  +12 more Upstream summary: It was discovered that a memory disclosure issue existed in the OpenJDK Library subsystem. An […]

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How to Encrypt Disk Partitions with LUKS on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Encrypt Disk Partitions with LUKS on RHEL 8

Linux Unified Key Setup (LUKS) is the standard disk encryption layer on RHEL 8, built on the dm-crypt kernel module and managed through the cryptsetup utility. Encrypting partitions with LUKS ensures that data is unreadable without the correct passphrase or key file, even if physical media is stolen or a drive is decommissioned without secure […]

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Arch Linux — postgresql-old-upgrade — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — postgresql-old-upgrade — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-201711-18 Related CVEs: CVE-2017-15099 CVE-2017-15098 Upstream summary: Type: multiple issues. Status: Fixed. Affected: 9.6.5-1. Fixed in: 9.6.6-1. Group: AVG-486. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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How to Harden PHP on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Harden PHP on FreeBSD 12

Introduction Deploying harden php on freebsd 12 on a FreeBSD 12 machine differs from Linux in several important ways: packages come from the FreeBSD Ports Collection or the binary pkg repository, services are registered in /etc/rc.conf via sysrc(8), and firewall rules are written in pf.conf(5) syntax. This tutorial stays entirely within the standard base + […]

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FreeBSD 12 — llpp — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — llpp — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 1 December 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: mupdf — multiple vulnerabilities Related CVEs: CVE-2016-6265 CVE-2016-6525 Upstream summary: Tobias Kortkamp reports: Heap-based buffer overflow in the pdf_load_mesh_params function in pdf/pdf-shade.c in MuPDF allows remote attackers to cause a […]

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How to Install CouchDB on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Install CouchDB on FreeBSD 12

Introduction How to Install CouchDB on FreeBSD 12 is a core administration task for any FreeBSD 12 server operator. FreeBSD 12 ships with the 15.0-RELEASE kernel, ZFS as the default root filesystem, Capsicum capability sandboxing improvements, and an updated ports tree. Unlike Linux distributions, FreeBSD uses rc(8) for service management, pf for packet filtering, and […]

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

openSUSE Tumbleweed — calamares — 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-2019:2628-1 (see also SUSE bugzilla) Related CVEs: CVE-2019-13178 Upstream summary: modules/luksbootkeyfile/main.py in Calamares versions 3.1 through 3.2.10 has a race condition between the time when the LUKS encryption keyfile is created and […]

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FreeBSD 12 — h2o — multiple vulnerabilities (11 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — h2o — multiple vulnerabilities (11 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 1 December 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: h2o — HTTP/2 Rapid Reset attack vulnerability Related CVEs: CVE-2015-5638 CVE-2016-1133 CVE-2016-4864 CVE-2017-10868 CVE-2017-10869 CVE-2018-0608 CVE-2019-9512 CVE-2019-9514  +3 more Upstream summary: Kazuo Okuhu reports: H2O is vulnerable to the HTTP/2 […]

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

FreeBSD 12 — mksh — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 1 December 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: mksh — TTY attachment privilege escalation Related CVEs: CVE-2008-1845 Upstream summary: Secunia reports: The vulnerability is caused due to an error when attaching to a TTY via the -T command […]

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