Linux

How To Install and Configure Elasticsearch on Ubuntu 16.04 — step-by-step Linux tutorial on Progressive Robot

How To Install and Configure Elasticsearch on Ubuntu 16.04

  • January 31, 2023
  • Linux
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Elasticsearch is a platform for distributed search and analysis of data in real time. Its popularity is due to its ease of use, powerful features, and scalability. Elasticsearch is a free and open source software with a solid company behind it: Elastic. This combination makes it suitable for use in anywhere from personal testing to corporate integration. This article will introduce you to Elasticsearch and show you how to install, configure, secure, and start using it.

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Common Problems 116914

Ubuntu 22.04 LTS DNS Resolution Fails with systemd-resolved

  • January 30, 2023
  • Linux
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🟡 Medium   ⏱ 5–30 min  Last verified: 30 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 — rake — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — rake — vulnerability — patch and remediation guide

  • January 30, 2023
  • Linux
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🟢 Low   ⏱ 5–15 min  Last verified: 30 January 2023 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-8130 Upstream summary: There is an OS command injection vulnerability in Ruby Rake < 12.3.3 in Rake::FileList when supplying a filename that begins with the pipe character `|`. […]

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Debian 11 — xapian-core — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — xapian-core — vulnerability — patch and remediation guide

  • January 30, 2023
  • Linux
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🟢 Low   ⏱ 5–15 min  Last verified: 30 January 2023 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2018-0499 Upstream summary: A cross-site scripting vulnerability in queryparser/termgenerator_internal.cc in Xapian xapian-core before 1.4.6 exists due to incomplete HTML escaping by Xapian::MSet::snippet(). Table of contents Symptom & Impact […]

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Debian 11 — fuse-exfat — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — fuse-exfat — multiple vulnerabilities (2 CVEs) — patch and remediation guide

  • January 30, 2023
  • Linux
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🟢 Low   ⏱ 5–15 min  Last verified: 30 January 2023 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2015-8026 CVE-2022-29973 Upstream summary: Heap-based buffer overflow in the verify_vbr_checksum function in exfatfsck in exfat-utils before 1.2.1 allows remote attackers to cause a denial of service (infinite loop) […]

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Ubuntu 18.04 — python-asyncssh — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — python-asyncssh — multiple vulnerabilities (3 CVEs) — patch and remediation guide

  • January 30, 2023
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 30 January 2023 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7108-2 Related CVEs: CVE-2023-46445 CVE-2023-46446 CVE-2018-7749 Upstream summary: USN-7108-1 fixed vulnerabilities in AysncSSH. This update provides the corresponding update for Ubuntu 18.04 LTS. Original advisory details: Fabian Bäumer, Marcus Brinkmann, […]

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Ubuntu 20.04 — yajl — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — yajl — multiple vulnerabilities (3 CVEs) — patch and remediation guide

  • January 30, 2023
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 30 January 2023 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6233-2 Related CVEs: CVE-2017-16516 CVE-2022-24795 CVE-2023-33460 Upstream summary: USN-6233-1 fixed vulnerabilities in YAJL. This update provides the corresponding updates for Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, and Ubuntu 23.04. Original […]

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How To Setup Nginx Server Blocks on Debian 7 — step-by-step Linux tutorial on Progressive Robot

How To Setup Nginx Server Blocks on Debian 7

  • January 30, 2023
  • Linux
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When used with nginx, “Virtual Hosts” are referred to as “Server Blocks” and allow users to run more than one website/domain off a single server/IP address. The kernel used in this tutorial is Debian 7: it will go over how to set up a new directory/grant permissions/add content/turn on virtual hosting/set up local hosts.

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Gentoo Linux — dev-java/snakeyaml — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — dev-java/snakeyaml — multiple vulnerabilities (5 CVEs) — patch and remediation guide

  • January 30, 2023
  • Linux
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🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202305-28 Related CVEs: CVE-2017-18640 CVE-2022-38749 CVE-2022-38750 CVE-2022-38751 CVE-2022-38752 Upstream summary: Multiple vulnerabilities have been discovered in snakeyaml. Please review the CVE identifiers referenced below for details. Table of contents Symptom & Impact […]

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Ubuntu 22.04 — atftp — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — atftp — vulnerability — patch and remediation guide

  • January 30, 2023
  • Linux
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🟢 Low   ⏱ 5–15 min  Last verified: 30 January 2023 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6375-1 Related CVEs: https://launchpad.net/bugs/1989816 Upstream summary: Florian Fainelli discovered that atftp did not properly manage requests made to a non-existent file, which could lead to a crash. A remote attacker […]

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