🟢 Low ⏱ 5–15 min Last verified: 25 May 2026 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read • Source: Ubuntu Security Notice USN-5004-1 Related CVEs: CVE-2019-11287 CVE-2021-22116 Upstream summary: It was discovered that RabbitMQ incorrectly handled certain inputs. An attacker could possibly use this issue to cause a denial of service. This […]
Learn how to find strings in a Python list using methods like in operator, count(), and custom logic. Explore examples, handle errors, and debug issues.
🟠 High ⏱ 15–60 min Last verified: 25 May 2026 Affected versions: SLES 12 📖 ~4 min read • Source: SUSE advisory SUSE-CU-2021:127-1 (see also SUSE bugzilla) Related CVEs: CVE-2021-20305 CVE-2021-3580 CVE-2015-8803 CVE-2015-8804 CVE-2015-8805 CVE-2016-6489 Upstream summary: A flaw was found in Nettle in versions before 3.7.2, where several Nettle signature verification functions (GOST […]
🟠 High ⏱ 15–60 min Last verified: 25 May 2026 Affected versions: Oracle Linux 8 📖 ~4 min read • Source: ELSA advisory ELSA-2020-5619-1 Related CVEs: CVE-2019-10130 CVE-2020-25694 CVE-2020-25695 CVE-2019-10208 CVE-2020-1720 CVE-2020-14350 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]
Introduction Metabase is a Java-based open-source Business Intelligence (BI) tool. It can connect to a number of different databases and has a question builder tool that can hide the complexity of large SQL queries. In this tutorial you will install Metabase using Docker Compose, then install Nginx to act as a reverse proxy for your […]
How to Profile Application Performance with perf on RHEL 7 Performance bottlenecks in production applications are notoriously difficult to diagnose using traditional monitoring tools alone. CPU usage metrics tell you that a system is busy but rarely tell you where the work is happening inside your application. The perf subsystem, built directly into the Linux […]
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: Oracle Linux 8 📖 ~4 min read • Source: ELSA advisory ELSA-2021-1585 Related CVEs: CVE-2021-3326 CVE-2019-9169 CVE-2019-25013 CVE-2020-27618 CVE-2016-10228 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative […]
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read • Source: AlmaLinux ALSA ALBA-2022:2075 Upstream summary: For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read • Source: AlmaLinux ALSA ALSA-2021:1734 Related CVEs: CVE-2020-14372 CVE-2020-25632 CVE-2020-25647 CVE-2020-27749 CVE-2020-27779 CVE-2021-20225 CVE-2021-20233 Upstream summary: The shim package contains a first-stage UEFI boot loader that handles chaining to a trusted full boot loader under secure […]
🟡 Medium ⏱ 5–30 min Last verified: 20 May 2026 📖 ~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 […]
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