🟠 High ⏱ 5–30 min Last verified: 3 July 2021 Affected versions: Oracle Linux 8 📖 ~4 min read • Source: Oracle Bug 31203340 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 […]
🟡 Medium ⏱ 5–30 min Last verified: 3 July 2021 📖 ~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 […]
🟢 Low ⏱ 5–15 min Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read • Source: SUSE security advisory Related CVEs: CVE-2021-36756 CVE-2021-38379 Upstream summary: CFEngine Enterprise 3.15.0 through 3.15.4 has Missing SSL Certificate Validation. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step […]
🟡 Medium ⏱ 10–30 min Last verified: 3 July 2021 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read • Source: Ubuntu Security Notice USN-6825-1 Related CVEs: CVE-2016-4855 CVE-2016-7405 CVE-2021-3850 Upstream summary: It was discovered that the PDO driver in ADOdb was incorrectly handling string quotes. A remote attacker could possibly use this issue […]
Linux and the applications that run on it can generate all different types of messages, which are recorded in various log files. Linux uses a set of configuration files, directories, programs, commands and daemons to create, store and recycle these log messages. Knowing where the system keeps its log files and how to make use of related commands can therefore help save valuable time during troubleshooting.
🟠 High ⏱ 15–60 min Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read • Source: SUSE advisory SUSE-SU-2022:1678-1 (see also SUSE bugzilla) Related CVEs: CVE-2020-36518 Upstream summary: jackson-databind before 2.13.0 allows a Java StackOverflow exception and denial of service via a large depth of nested objects. Table of contents […]
🟡 Medium ⏱ 10–30 min Last verified: 3 July 2021 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read • Source: Ubuntu Security Notice USN-5019-1 Related CVEs: CVE-2021-1093 CVE-2021-1094 CVE-2021-1095 CVE-2021-1076 CVE-2021-1077 CVE-2021-1052 CVE-2021-1053 Upstream summary: It was discovered that an assert() could be triggered in the NVIDIA graphics drivers. A local attacker could […]
🟡 Medium ⏱ 10–30 min Last verified: 3 July 2021 Affected versions: Oracle Linux 8 📖 ~4 min read • Source: ELSA advisory ELSA-2024-0768 Related CVEs: CVE-2020-28241 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]
Linux servers are often administered remotely using SSH by connecting to an OpenSSH server, which is the default SSH server software used within Ubuntu, Debian, CentOS, FreeBSD, and most other Linux/BSD-based systems. In this tutorial, you will harden your Ubuntu 20.04 OpenSSH server by using different configuration options to help ensure that remote access to your server is as secure as possible.
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read • Source: Arch ASA ASA-202106-26 Related CVEs: CVE-2021-33880 Upstream summary: Type: private key recovery. Status: Fixed. Affected: 9.0.1-3. Fixed in: 9.1-1. Group: AVG-2040. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]
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