Linux

SLES 15 — opencv — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — opencv — multiple vulnerabilities (4 CVEs) — patch and remediation guide

  • June 28, 2019
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 28 June 2019 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2018:1438-1 (see also SUSE bugzilla) Related CVEs: CVE-2017-18009 CVE-2019-14491 CVE-2019-14492 CVE-2019-15939 Upstream summary: In OpenCV 3.3.1, a heap-based buffer over-read exists in the function cv::HdrDecoder::checkSignature in modules/imgcodecs/src/grfmt_hdr.cpp. Table of contents Symptom & […]

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How to Install and Get Started with Symfony 2 on Ubuntu 14.04 — step-by-step Linux tutorial on Progressive Robot

How to Install and Get Started with Symfony 2 on Ubuntu 14.04

  • June 28, 2019
  • Linux
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Symfony is a full-stack, open source PHP framework, also well known for its independent components that can be easily integrated into any other PHP project. The Symfony framework is suitable for building PHP applications of any size, including console applications to run only on the command line.

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

SLES 12 — ksh — vulnerability — patch and remediation guide

  • June 28, 2019
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 28 June 2019 Affected versions: SLES 12 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2024:2756-1 (see also SUSE bugzilla) Related CVEs: CVE-2019-14868 Upstream summary: In ksh version 20120801, a flaw was found in the way it evaluates certain environment variables. An attacker could use this flaw […]

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Alpine Linux edge — xkbcomp — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — xkbcomp — multiple vulnerabilities (4 CVEs) — patch and remediation guide

  • June 28, 2019
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 1.5.0-r0 📖 ~4 min read  •  Source: Alpine secdb entry — xkbcomp 1.5.0-r0 Related CVEs: CVE-2018-15853 CVE-2018-15859 CVE-2018-15861 CVE-2018-15863 Upstream summary: Alpine main repository for vedge ships xkbcomp 1.5.0-r0 which addresses CVE-2018-15853. Table of contents Symptom […]

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How to Deploy a Ruby on Rails Application on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Deploy a Ruby on Rails Application on RHEL 7

  • June 28, 2019
  • Linux
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How to Deploy a Ruby on Rails Application on RHEL 7 Ruby on Rails is a full-featured web application framework that follows the Model-View-Controller (MVC) pattern and emphasizes convention over configuration. Deploying a Rails application on RHEL 7 in a production-grade configuration requires several components working together: Rails itself running under Puma (a multi-threaded Ruby […]

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How To Address Crashes in MySQL — step-by-step Linux tutorial on Progressive Robot

How To Address Crashes in MySQL

  • June 28, 2019
  • Linux
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The most common cause of crashes in MySQL is that it stopped or failed to start due to insufficient memory. To check this, you will need to review the MySQL error log after a crash. First, attempt to start the MySQL server by typing: sudo systemctl start mysql Then…

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Common Problems 115449

RHEL 7 yum dependency conflict after enabling mixed repositories

  • June 27, 2019
  • Linux
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🟠 High   ⏱ 5–30 min  Last verified: 27 June 2019 Affected versions: RHEL 7 📖 ~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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openSUSE Tumbleweed — hunspell — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — hunspell — vulnerability — patch and remediation guide

  • June 27, 2019
  • Linux
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🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2020:1717-1 (see also SUSE bugzilla) Related CVEs: CVE-2019-16707 Upstream summary: Hunspell 1.7.0 has an invalid read operation in SuggestMgr::leftcommonsubstring in suggestmgr.cxx. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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How To Add a Prometheus Dashboard to Grafana — step-by-step Linux tutorial on Progressive Robot

How To Add a Prometheus Dashboard to Grafana

  • June 27, 2019
  • Linux
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Grafana is the leading graph and dashboard builder for visualizing time series infrastructure and application metrics, but many use it in other domains including industrial sensors, home automation, weather, and process control. It provides a powerful and elegant way to create, explore, and share dashboards and data with your team and the world. In this tutorial, you will learn how to add Prometheus as a data source to your Grafana instance and install a pre-configured Prometheus Dashboard.

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