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Debian 11 — mh-book — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — mh-book — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2008-5152 Upstream summary: inmail-show in mh-book 200605 allows local users to overwrite arbitrary files via a symlink attack on a (1) /tmp/inmail#####.log or (2) /tmp/inmail#####.stdin temporary file. Table […]

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Oracle Linux 8 — container-tools:ol8 — security and stability fixes — required update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — container-tools:ol8 — security and stability fixes — required update (ELSA-2019-0975)

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2019-0975 Related CVEs: CVE-2019-5736 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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Debian 11 — golang-github-dgrijalva-jwt-go — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — golang-github-dgrijalva-jwt-go — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-26160 Upstream summary: jwt-go before 4.0.0-preview1 allows attackers to bypass intended access restrictions in situations with []string{} for m["aud"] (which is allowed by the specification). Because the type […]

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Debian 11 — smokeping — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — smokeping — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2012-0790 CVE-2013-4168 CVE-2015-0859 Upstream summary: Cross-site scripting (XSS) vulnerability in smokeping_cgi in Smokeping 2.4.2, 2.6.6, and other versions before 2.6.7 allows remote attackers to inject arbitrary web script […]

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

How to Install RabbitMQ on FreeBSD 12

Introduction How to Install RabbitMQ 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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Debian 11 — iptables — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — iptables — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2004-0986 CVE-2012-2663 CVE-2019-11360 Upstream summary: Iptables before 1.2.11, under certain conditions, does not properly load the required modules at system startup, which causes the firewall rules to fail […]

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Debian 11 — libxmltok — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — libxmltok — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2009-3560 CVE-2009-3720 CVE-2012-0876 CVE-2012-1147 CVE-2012-1148 CVE-2012-6702 CVE-2013-0340 CVE-2015-1283  +12 more Upstream summary: The big2_toUtf8 function in lib/xmltok.c in libexpat in Expat 2.0.1, as used in the XML-Twig module […]

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Ubuntu 16.04 — flac — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — flac — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6360-2 Related CVEs: CVE-2020-22219 CVE-2017-6888 CVE-2020-0499 CVE-2021-0561 Upstream summary: USN-6360-1 fixed a vulnerability in FLAC. This update provides the corresponding update for Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, and Ubuntu […]

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How to Configure Nginx Server Blocks (Virtual Hosts) on Ubuntu 26.04 — step-by-step Linux tutorial on Progressive Robot

How to Configure Nginx as a Reverse Proxy on Ubuntu 26.04

A reverse proxy sits in front of one or more backend application servers and forwards client requests to them. Nginx excels as a reverse proxy — it handles SSL termination, load balancing, caching, and rate limiting while passing traffic to Node.js, Python, Java, or other apps. This guide configures Nginx as a reverse proxy on […]

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Ubuntu 16.04 — cobbler — multiple vulnerabilities (11 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — cobbler — multiple vulnerabilities (11 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6475-1 Related CVEs: CVE-2014-3225 CVE-2017-1000469 CVE-2018-1000225 CVE-2018-1000226 CVE-2018-10931 CVE-2021-40323 CVE-2021-40324 CVE-2021-40325  +3 more Upstream summary: It was discovered that Cobbler did not properly handle user input, which could result in […]

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