Linux

Common Problems 116950

Ubuntu 22.04 LTS DNS Resolution Intermittently Fails with systemd-resolved

🟡 Medium   ⏱ 5–30 min  Last verified: 4 January 2023 📖 ~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 & Cross-Refs References & Further […]

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Debian 11 — python-mistralclient — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — python-mistralclient — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 4 January 2023 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2021-4472 Upstream summary: The mistral-dashboard plugin for openstack has a local file inclusion vulnerability through the 'Create Workbook' feature that may result in disclosure of arbitrary local files […]

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

Debian 11 — samizdat — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 4 January 2023 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2009-0359 Upstream summary: Multiple cross-site scripting (XSS) vulnerabilities in Samizdat before 0.6.2 allow remote authenticated users to inject arbitrary web script or HTML via the (1) message title […]

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Debian 11 — lightdm-gtk-greeter — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — lightdm-gtk-greeter — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 4 January 2023 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2014-0979 Upstream summary: The start_authentication function in lightdm-gtk-greeter.c in LightDM GTK+ Greeter before 1.7.1 does not properly handle the return value from the lightdm_greeter_get_authentication_user function, which allows local […]

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Ubuntu 14.04 — unzip — multiple vulnerabilities (17 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 14.04

Ubuntu 14.04 — unzip — multiple vulnerabilities (17 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 4 January 2023 Affected versions: Ubuntu 14.04 (trusty) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5673-1 Related CVEs: CVE-2021-4217 CVE-2022-0529 CVE-2022-0530 https://launchpad.net/bugs/1957077 CVE-2014-9913 CVE-2016-9844 CVE-2018-1000035 CVE-2018-18384  +9 more Upstream summary: It was discovered that unzip did not properly handle unicode strings under certain circumstances. If […]

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Amazon Linux 2 — libsndfile — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — libsndfile — multiple vulnerabilities (5 CVEs) — 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 ALAS2-2021-1713 Related CVEs: CVE-2021-3246 CVE-2022-33065 CVE-2021-4156 CVE-2018-13139 CVE-2018-19662 Upstream summary: A heap buffer overflow flaw was found in libsndfile. This flaw allows an attacker to execute arbitrary code via a […]

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Oracle Linux 9 — jackson — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — jackson — vulnerability — patch and remediation guide (ELSA-2023-2312)

🟡 Medium   ⏱ 10–30 min  Last verified: 4 January 2023 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-2312 Related CVEs: CVE-2020-36518 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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Oracle Linux 8 — ol8addon — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — ol8addon — vulnerability — patch and remediation guide (ELSA-2022-24267)

🟠 High   ⏱ 15–60 min  Last verified: 4 January 2023 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-24267 Related CVEs: CVE-2022-1962 CVE-2022-2880 CVE-2022-2879 CVE-2022-28131 CVE-2022-41715 CVE-2022-30633 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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A Complete Guide to Install Tomcat on Linux — step-by-step Linux tutorial on Progressive Robot

A Complete Guide to Install Tomcat on Linux

URL: https://www.progressiverobot.com/install-tomcat-on-linux/ Let's cover the steps to install Tomcat on Linux today. We have already covered the steps for [installation on CentOS here](/community/tutorials/install-apache-tomcat-9-centos-7). In this tutorial, we'll use Ubuntu to demonstrate the installation. You can follow this tutorial even if you're on a different distribution. To do so, make sure you use the package manager […]

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Oracle Linux 9 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide (ELSA-2022-9689)

🟠 High   ⏱ 15–60 min  Last verified: 4 January 2023 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-9689 Related CVEs: CVE-2022-2588 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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