IT, Cloud & DevOps Blog

Ubuntu 20.04 — libntlm — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — libntlm — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 14 June 2020 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5108-1 Related CVEs: CVE-2019-17455 Upstream summary: It was discovered that Libntlm incorrectly handled specially crafted NTML requests. An attacker could possibly use this issue to cause a denial of service […]

Read more
Effective Kubernetes Onboarding — step-by-step Kubernetes tutorial on Progressive Robot

Effective Kubernetes Onboarding

Strategies for onboarding developers to Kubernetes — learn how to situate Kubernetes in a larger arc of application development and integrate it into an existing development workflow.

Read more
Common Problems 121155

Debian 10 Permissions Changed Incorrectly After Recursive chmod

🟠 High   ⏱ 5–30 min  Last verified: 13 June 2020 Affected versions: Debian 10 📖 ~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 117489

Ubuntu 20.04 external monitor not detected

🟡 Medium   ⏱ 5–30 min  Last verified: 13 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
FreeBSD 12 — sddm — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — sddm — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 13 June 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: X11 Session — SDDM allows unauthorised unlocking Related CVEs: CVE-2018-14345 Upstream summary: MITRE reports: An issue was discovered in SDDM through 0.17.0. If configured with ReuseSession=true, the password is not […]

Read more
Common Problems 115004

RHEL 8 SSH Login Slow Due to DNS and GSSAPI

🟡 Medium   ⏱ 5–30 min  Last verified: 13 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
FreeBSD 12 — zeek — security advisory — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — zeek — security advisory — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 13 June 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: zeek — potential DoS vulnerability Upstream summary: Wojtulewicz of Corelight reports: A specially-crafted series of MIME headers sent via SMTP or HTTP could cause Zeek to use large amounts of […]

Read more
How to Install Kibana on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Install Kibana on Debian 9

Introduction This guide explains how to Install Kibana on Debian 9 on Debian 9 Stretch. Debian Stretch uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian 9 install with the standard repositories […]

Read more
CHAT