Security Hardening

FreeBSD 13 — py36-yaml — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — py36-yaml — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 22 August 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: PyYAML — arbitrary code execution Related CVEs: CVE-2017-18342 CVE-2020-14343 CVE-2020-1747 Upstream summary: A vulnerability was discovered in the PyYAML library in versions before 5.4, where it is susceptible to arbitrary […]

Read more
How to Install and Configure ISC DHCP Server on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Install and Configure ISC DHCP Server on FreeBSD 13

Introduction This guide explains how to Install and Configure ISC DHCP Server on FreeBSD 13 on FreeBSD 13. FreeBSD uses the pkg(8) binary package manager, rc.conf(5) for service startup configuration, and pf(4) as its primary packet filter. There is no SELinux or AppArmor — instead, FreeBSD provides the MAC (Mandatory Access Control) framework and Capsicum […]

Read more
AlmaLinux 8 — cppcheck — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — cppcheck — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALBA-2021:4523 Upstream summary: For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

Read more
Debian 10 — gst-plugins-bad1.0 — vulnerability — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — gst-plugins-bad1.0 — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 22 August 2021 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2021-3185 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

Read more
Debian 11 — prboom-plus — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — prboom-plus — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 22 August 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-20797 Upstream summary: An issue was discovered in e6y prboom-plus 2.5.1.5. There is a buffer overflow in client and server code responsible for handling received UDP packets, as […]

Read more
Debian 11 — postgis — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — postgis — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 22 August 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2017-18359 Upstream summary: PostGIS 2.x before 2.3.3, as used with PostgreSQL, allows remote attackers to cause a denial of service via crafted ST_AsX3D function input, as demonstrated by […]

Read more
Debian 11 — libwebp — multiple vulnerabilities (16 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — libwebp — multiple vulnerabilities (16 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 22 August 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2012-5127 CVE-2016-9085 CVE-2016-9969 CVE-2018-25009 CVE-2018-25010 CVE-2018-25011 CVE-2018-25012 CVE-2018-25013  +8 more Upstream summary: Integer overflow in Google Chrome before 23.0.1271.64 allows remote attackers to cause a denial of service […]

Read more
Debian 11 — ruby-rack-ssl — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — ruby-rack-ssl — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 22 August 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2014-2538 Upstream summary: Cross-site scripting (XSS) vulnerability in lib/rack/ssl.rb in the rack-ssl gem before 1.4.0 for Ruby allows remote attackers to inject arbitrary web script or HTML via […]

Read more
Ubuntu 20.04 — brotli — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — brotli — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 22 August 2021 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4568-1 Related CVEs: CVE-2020-8927 Upstream summary: It was discovered that Brotli incorrectly handled certain inputs. An attacker could possibly use this issue to cause a crash. Table of contents Symptom […]

Read more
AlmaLinux 8 — flac — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — flac — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2023:5046 Related CVEs: CVE-2020-22219 Upstream summary: FLAC stands for Free Lossless Audio Codec. FLAC is similar to Ogg Vorbis, but lossless. The FLAC project consists of the stream format, reference encoders and […]

Read more
CHAT