Linux

openSUSE Tumbleweed — colord — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — colord — multiple vulnerabilities (2 CVEs) — patch and remediation guide

  • July 26, 2021
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2022:3496-1 (see also SUSE bugzilla) Related CVEs: CVE-2021-42523 CVE-2011-4349 Upstream summary: There are two Information Disclosure vulnerabilities in colord, and they lie in colord/src/cd-device-db.c and colord/src/cd-profile-db.c separately. They exist because the 'err_msg' […]

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Ubuntu 14.04 — gmp — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 14.04

Ubuntu 14.04 — gmp — vulnerability — patch and remediation guide

  • July 26, 2021
  • Linux
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🟢 Low   ⏱ 5–15 min  Last verified: 26 July 2021 Affected versions: Ubuntu 14.04 (trusty) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5672-2 Related CVEs: CVE-2021-43618 Upstream summary: USN-5672-1 fixed a vulnerability in GMP. This update provides the corresponsing update for Ubuntu 14.04 ESM. Original advisory details: It was discovered that GMP […]

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SLES 12 — libgmp10 — vulnerability — patch and remediation guide — diagnosis and fix on SLES 12

SLES 12 — libgmp10 — vulnerability — patch and remediation guide

  • July 26, 2021
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 26 July 2021 Affected versions: SLES 12 📖 ~4 min read  •  Source: SUSE advisory SUSE-CU-2021:541-1 (see also SUSE bugzilla) Related CVEs: CVE-2021-43618 Upstream summary: GNU Multiple Precision Arithmetic Library (GMP) through 6.2.1 has an mpz/inp_raw.c integer overflow and resultant buffer overflow via crafted input, leading to […]

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Oracle Linux 8 — stunnel — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — stunnel — vulnerability — patch and remediation guide (ELSA-2021-0618)

  • July 26, 2021
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 26 July 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-0618 Related CVEs: CVE-2021-20230 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 — cloud-init security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — cloud-init security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2020-4650)

  • July 25, 2021
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 July 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-4650 Related CVEs: CVE-2020-8631 CVE-2020-8632 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & […]

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How To Set Up a Firewall Using Iptables on Ubuntu 12.04 — step-by-step Linux tutorial on Progressive Robot

How To Set Up a Firewall Using Iptables on Ubuntu 12.04

  • July 25, 2021
  • Linux
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This tutorial covers setting up a very simple firewall with iptables on an ubuntu droplet. The iptables rules come from a series of options that can be combined to create each specific process. Each packet that crossing the firewall is checked by each rule in order. As soon as it matches a rule, the packet follows the associated action, otherwise it proceeds down the line. Many of the rules in the article should be copy and pastable.

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How To Secure Nginx with Let's Encrypt on Ubuntu 18.04 — step-by-step Linux tutorial on Progressive Robot

How To Secure Nginx with Let’s Encrypt on Ubuntu 18.04

  • July 25, 2021
  • Linux
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In this tutorial, we will show you how to use Let’s Encrypt to obtain a free SSL certificate and use it with Nginx on Ubuntu 18.04. We will also show you how to automatically renew your SSL certificate. If you’re running a different web server, simply follow your web server’s documentation to learn how to use the certificate with your setup.

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