IT, Cloud & DevOps Blog

Ubuntu 16.04 — apparmor — multiple vulnerabilities (4 CVEs) — patch and remediation guide

• August 30, 2019
• Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 30 August 2019 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4008-2 Related CVEs: CVE-2019-11190 https://launchpad.net/bugs/1788929 https://launchpad.net/bugs/1794848 CVE-2017-6507 Upstream summary: USN-4008-1 fixed multiple security issues in the Linux kernel. This update provides the corresponding changes to AppArmor policy for correctly operating […]

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Cómo usar JSON.parse() y JSON.stringify()

• August 30, 2019
• Javascript
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Una referencia rápida para los métodos parse y stringify del objeto JSON.

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SLES 15 — libXtst6 — vulnerability — patch and remediation guide

• August 30, 2019
• Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 30 August 2019 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2013:1103-1 (see also SUSE bugzilla) Related CVEs: CVE-2013-2063 Upstream summary: Integer overflow in X.org libXtst 1.2.1 and earlier allows X servers to trigger allocation of insufficient memory and a buffer overflow via […]

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openSUSE Tumbleweed — python36-reportlab — vulnerability — patch and remediation guide

• August 30, 2019
• Linux
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🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2020:0160-1 (see also SUSE bugzilla) Related CVEs: CVE-2019-17626 Upstream summary: ReportLab through 3.5.26 allows remote code execution because of toColor(eval(arg)) in colors.py, as demonstrated by a crafted XML document with '<span color="' […]

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Oracle Linux 8 — grub2 — vulnerability — patch and remediation guide (ELSA-2019-4869)

• August 30, 2019
• Linux
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🟠 High   ⏱ 15–60 min  Last verified: 30 August 2019 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2019-4869 Related CVEs: CVE-2019-14865 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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How To Write Doctests in Python

• August 30, 2019
• Python
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Python’s standard library comes equipped with a test framework module called `doctest`. The `doctest` module programmatically searches Python code for pieces of text within comments that look like interactive Python sessions. Then, the module executes those sessions to confirm that the code referenced by a doctest runs as expected.

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Deploying an Express Application on a Kubernetes Cluster

• August 30, 2019
• Kubernetes
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In this tutorial, you will build an example Express application and test it locally on your development machine. Then, you will containerize your application with Docker, deploy it to a Kubernetes cluster, and create a load balancer that serves as a public access point to your application.

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FreeBSD 12 — linux-c6-openssl — multiple vulnerabilities (20 CVEs) — patch and remediation guide

• August 30, 2019
• BSD
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🟠 High   ⏱ 15–60 min  Last verified: 30 August 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: OpenSSL — Padding oracle vulnerability Related CVEs: CVE-2014-3513 CVE-2014-3566 CVE-2014-3567 CVE-2014-3568 CVE-2014-3569 CVE-2014-3570 CVE-2014-3571 CVE-2014-3572  +12 more Upstream summary: The OpenSSL project reports: 0-byte record padding oracle (CVE-2019-1559) (Moderate) If […]

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Ubuntu 16.04 LTS apt update fails with NO_PUBKEY errors

• August 29, 2019
• Linux
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🟡 Medium   ⏱ 5–30 min  Last verified: 29 August 2019 Affected versions: 16.04 16.04.7 📖 ~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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Ubuntu 18.04 LTS DNS Resolution Intermittently Fails

• August 29, 2019
• Linux
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🟡 Medium   ⏱ 5–30 min  Last verified: 29 August 2019 Affected versions: 18.04 LTS 📖 ~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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