🟢 Low ⏱ 5–15 min Last verified: 20 June 2021 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read • Source: Ubuntu Security Notice USN-4619-1 Related CVEs: CVE-2018-1000632 CVE-2020-10683 Upstream summary: Mário Areias discovered that dom4j did not properly validate XML document elements. An attacker could exploit this with a crafted XML file to […]
This tutorial covers setting up an NFS mount on CentOS. NFS mounts work to share a directory between several virtual servers. This has the advantage of saving disk space, as the home directory is only kept on one virtual private server, and others can connect to it over the network. When setting up mounts, NFS is most effective for permanent fixtures that should always be accessible.
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read • Source: Gentoo GLSA GLSA-202105-13 Related CVEs: CVE-2021-27229 Upstream summary: Please review the CVE identifiers referenced below for details. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution […]
🟠 High ⏱ 15–60 min Last verified: 20 June 2021 Affected versions: Oracle Linux 8 📖 ~4 min read • Source: ELSA advisory ELSA-2021-3155 Related CVEs: CVE-2021-29989 CVE-2021-29985 CVE-2021-29984 CVE-2021-29986 CVE-2021-29980 CVE-2021-29988 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]
You can greatly increase the security of your Nginx server by using a module like NAXSI. NAXSI (Nginx Anti XSS & SQL Injection) is a free, third-party Nginx module that provides web application firewall features. In this tutorial, you will use NAXSI to secure Nginx on your Ubuntu 16.04 server. By the end of this tutorial, you will know what kinds of attacks NAXSI can block and how to configure NAXSI rules.
🟠 High ⏱ 15–60 min Last verified: 20 June 2021 Affected versions: Oracle Linux 8 📖 ~4 min read • Source: ELSA advisory ELSA-2021-9404 Related CVEs: CVE-2020-14304 CVE-2021-3564 CVE-2020-24588 CVE-2020-26147 CVE-2020-26141 CVE-2020-24586 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]
🔴 Critical ⏱ 15–90 min Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read • Source: Arch ASA ASA-201710-28 Related CVEs: CVE-2017-15650 CVE-2020-28928 Upstream summary: Type: arbitrary code execution. Status: Fixed. Affected: 1.1.16-2. Fixed in: 1.1.17-1. Group: AVG-457. Table of contents Symptom & Impact Environment & Reproduction Root […]
🟠 High ⏱ 5–30 min Last verified: 19 June 2021 Affected versions: Oracle Linux 8 📖 ~4 min read • Source: Oracle Bug OLRNT-ol8-issues-podman 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: 19 June 2021 Affected versions: 14.04 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 & […]
🟠 High ⏱ 5–30 min Last verified: 19 June 2021 Affected versions: Ubuntu 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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