January 2022 - Page 16 of 72

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

Debian 11 — coolkey — 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-2007-4129 Upstream summary: CoolKey 1.1.0 allows local users to overwrite arbitrary files via a symlink attack on temporary files in the /tmp/.pk11ipc1/ directory. Table of contents Symptom & […]

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Debian 11 — netkit-rwho — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — netkit-rwho — 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-2004-1180 Upstream summary: Unknown vulnerability in the rwho daemon (rwhod) before 0.17, on little endian architectures, allows remote attackers to cause a denial of service (application crash). Table […]

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Настройка монтажа NFS в Ubuntu 20.04 — step-by-step Linux tutorial on Progressive Robot

Настройка монтажа NFS в Ubuntu 20.04

NFS (сетевая файловая система) — это распределенный протокол файловой системы, позволяющий монтировать на сервер удаленные каталоги. Это позволяет управлять пространством хранения в другом месте и выполнять запись в это пространство с нескольких клиентов. NFS обеспечивает…

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Debian 11 — signing-party — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — signing-party — 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-2019-11627 Upstream summary: gpg-key2ps in signing-party 1.1.x and 2.x before 2.10-1 contains an unsafe shell call enabling shell injection via a User ID. Table of contents Symptom & […]

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Debian 11 — php-horde-gollem — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — php-horde-gollem — multiple vulnerabilities (2 CVEs) — 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-2017-15235 CVE-2020-8034 Upstream summary: The File Manager (gollem) module 3.0.11 in Horde Groupware 5.2.21 allows remote attackers to bypass Horde authentication for file downloads via a crafted fn […]

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Ubuntu 20.04 — shim-signed — multiple vulnerabilities (11 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — shim-signed — multiple vulnerabilities (11 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6355-1 Related CVEs: CVE-2022-28737 CVE-2021-3695 CVE-2021-3696 CVE-2021-3697 CVE-2021-3981 CVE-2022-28733 CVE-2022-28734 CVE-2022-28735  +3 more Upstream summary: Daniel Axtens discovered that specially crafted images could cause a heap-based out-of-bonds write. A local […]

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Oracle Linux 8 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide (ELSA-2022-9181)

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-9181 Related CVEs: CVE-2022-25636 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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SLES 12 — log4j — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on SLES 12

SLES 12 — log4j — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: SLES 12 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2020:0053-1 (see also SUSE bugzilla) Related CVEs: CVE-2019-17571 CVE-2022-23305 CVE-2022-23307 CVE-2021-4104 CVE-2022-23302 Upstream summary: Included in Log4j 1.2 is a SocketServer class that is vulnerable to deserialization of untrusted data which can […]

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How to Understand and Create CSS Rules – CSS Tutorial 2025–2026

How to Understand and Create CSS Rules – CSS Tutorial 2025–2026

Learning how to understand and create CSS rules (also called rulesets) is the single most important skill in any CSS tutorial — CSS rules are the fundamental instructions that tell the browser exactly how to style and position HTML elements. Every color, size, spacing, font, layout, hover effect, animation, and responsive behavior on the modern web starts with a CSS rule. In this guide, you’ll write your first CSS rule, break down every single part (selector, declaration block, property, value), and see it instantly applied in the browser using your css-practice project from the previous lesson.

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