IT, Cloud & DevOps Blog

Amazon Linux 2 — oniguruma — multiple vulnerabilities (12 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — oniguruma — multiple vulnerabilities (12 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 ALAS2-2023-2311 Related CVEs: CVE-2017-9226 CVE-2017-9227 CVE-2017-9228 CVE-2017-9229 CVE-2017-9224 CVE-2020-26159 CVE-2019-16163 CVE-2019-19012  +4 more Upstream summary: An issue was discovered in Oniguruma 6.2.0, as used in Oniguruma-mod in Ruby through 2.4.1 […]

Read more
Ubuntu 18.04 — libpcap — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — libpcap — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 June 2020 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4221-1 Related CVEs: CVE-2019-15165 Upstream summary: It was discovered that libpcap did not properly validate PHB headers in some situations. An attacker could use this to cause a denial of […]

Read more
Arch Linux — crypto++ — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — crypto++ — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-201912-3 Related CVEs: CVE-2019-14318 CVE-2016-7420 Upstream summary: Type: private key recovery. Status: Fixed. Affected: 8.2.0-1. Fixed in: 8.2.0-2. Group: AVG-1046. Table of contents Symptom & Impact Environment & Reproduction Root […]

Read more
Building Your First Slackbot With Python — step-by-step Python tutorial on Progressive Robot

Building Your First Slackbot With Python

Want to make a Slackbot to automate all the things? Slack’s amazing Python libraries can help get your bot up and running. See what a Slackbot is, how to configure it in the Slack developer portal, build your first Python Slackbot, and deploy it to production using an app platform.

Read more
Common Problems 117471

Ubuntu 20.04 LTS Kernel Upgrade Leaves Host in initramfs

🟠 High   ⏱ 5–30 min  Last verified: 24 June 2020 Affected versions: 20.04 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 & […]

Read more
Common Problems 117994

Ubuntu 18.04 external monitor not recognized

🟡 Medium   ⏱ 5–30 min  Last verified: 24 June 2020 📖 ~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 […]

Read more
Common Problems 115604

Postfix Cannot Send Mail Due to Firewall Restrictions

🟡 Medium   ⏱ 5–30 min  Last verified: 24 June 2020 📖 ~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 […]

Read more
openSUSE Tumbleweed — libXext6 — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — libXext6 — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2013:1099-1 (see also SUSE bugzilla) Related CVEs: CVE-2013-1982 Upstream summary: Multiple integer overflows in X.org libXext 1.3.1 and earlier allow X servers to trigger allocation of insufficient memory and a buffer overflow […]

Read more
CHAT