Linux

Common Problems 120044

Debian 12 Boot Stalls on Emergency Mode

🔴 Critical   ⏱ 5–30 min  Last verified: 14 October 2023 Affected versions: Debian 12 📖 ~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 & […]

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Alpine Linux edge — libwebp — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — libwebp — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 1.3.1-r1 📖 ~4 min read  •  Source: Alpine secdb entry — libwebp 1.3.1-r1 Related CVEs: CVE-2023-4863 CVE-2023-1999 Upstream summary: Alpine main repository for vedge ships libwebp 1.3.1-r1 which addresses CVE-2023-4863. Table of contents Symptom & Impact […]

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Debian 12 — webfs — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — webfs — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 14 October 2023 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2003-0445 CVE-2003-0832 CVE-2003-0833 CVE-2013-0347 Upstream summary: Buffer overflow in webfs before 1.17.1 allows remote attackers to execute arbitrary code via an HTTP request with a long Request-URI. Table […]

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Debian 12 — user-mode-linux — vulnerability — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — user-mode-linux — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 14 October 2023 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2002-2016 Upstream summary: User-mode Linux (UML) 2.4.17-8 does not restrict access to kernel address space, which allows local users to execute arbitrary code. Table of contents Symptom & […]

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Debian 12 — vcftools — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — vcftools — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 14 October 2023 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2018-11099 CVE-2018-11129 CVE-2018-11130 CVE-2019-1010127 Upstream summary: The header::add_INFO_descriptor function in header.cpp in VCFtools 0.1.15 allows remote attackers to cause information disclosure (heap-based buffer over-read) via a crafted vcf […]

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Ubuntu 20.04 — tinyxml — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — tinyxml — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 14 October 2023 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6612-1 Related CVEs: CVE-2023-34194 CVE-2021-42260 Upstream summary: It was discovered that TinyXML incorrectly handled certain inputs. If a user or an automated system were tricked into opening a specially crafted […]

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Ubuntu 18.04 — libapache-mod-jk — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — libapache-mod-jk — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 14 October 2023 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6826-1 Related CVEs: CVE-2023-41081 Upstream summary: Karl von Randow discovered that mod_jk was vulnerable to an authentication bypass. If the configuration did not provide explicit mounts for all possible proxied […]

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Ubuntu 18.04 — libx11 — multiple vulnerabilities (12 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — libx11 — multiple vulnerabilities (12 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 14 October 2023 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6407-2 Related CVEs: CVE-2023-43785 CVE-2023-43786 CVE-2023-43787 CVE-2023-3138 CVE-2021-31535 CVE-2020-14344 CVE-2020-14363 CVE-2016-7942  +4 more Upstream summary: USN-6407-1 fixed several vulnerabilities in libx11. This update provides the corresponding update for Ubuntu 14.04 […]

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Como-instalar-e-configurar-o VNC no Ubuntu 20.04 — step-by-step Linux tutorial on Progressive Robot

Como-instalar-e-configurar-o VNC no Ubuntu 20.04

O Virtual Network Computing, ou VNC, é um sistema de conexão que permite que você use seu teclado e mouse para interagir com um ambiente gráfico da área de trabalho em um servidor remoto. Isso facilita o gerenciamento de arquivos, software e configurações em um servidor remoto…

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