Package Management

Oracle Linux 8 — file — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — file — vulnerability — patch and remediation guide (ELSA-2021-4374)

🟡 Medium   ⏱ 10–30 min  Last verified: 21 November 2019 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-4374 Related CVEs: CVE-2019-18218 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

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How to Enable HTTP/2 with Nginx on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Enable HTTP/2 with Nginx on RHEL 7

How to Enable HTTP/2 with Nginx on RHEL 7 HTTP/2 is the major revision of the HTTP network protocol that brings multiplexed streams, header compression, and server push to web traffic. Compared to HTTP/1.1, HTTP/2 dramatically reduces page load times on sites with many assets by eliminating head-of-line blocking and reducing the overhead of repeated […]

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openSUSE Tumbleweed — whois — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — whois — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2011:0935-1 (see also SUSE bugzilla) Related CVEs: CVE-2011-2483 Upstream summary: crypt_blowfish before 1.1, as used in PHP before 5.3.7 on certain platforms, PostgreSQL before 8.4.9, and other products, does not properly handle […]

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How to Configure RAID with mdadm on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Configure RAID with mdadm on Debian 9

Introduction How to Configure RAID with mdadm on Debian 9 is a fundamental operation for any administrator maintaining a Debian 9 Stretch server. Debian 9 Stretch ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from Debian 9. […]

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FreeBSD 12 — atril — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — atril — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 20 November 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: evince and atril — command injection vulnerability in CBT handler Related CVEs: CVE-2017-1000083 Upstream summary: GNOME reports: The comic book backend in evince 3.24.0 (and earlier) is vulnerable to a […]

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FreeBSD 12 — twiki — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — twiki — multiple vulnerabilities (6 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 20 November 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: twiki — remote Perl code execution Related CVEs: CVE-2004-1037 CVE-2006-3336 CVE-2008-3195 CVE-2008-5304 CVE-2008-5305 CVE-2014-7236 Upstream summary: TWiki developers report: The debugenableplugins request parameter allows arbitrary Perl code execution. Using an […]

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Amazon Linux 2 — fuse — vulnerability — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — fuse — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2-2018-1123 Related CVEs: CVE-2018-10906 Upstream summary: A vulnerability was discovered in fuse. When SELinux is active, fusermount is vulnerable to a restriction bypass. This allows non-root users to mount a […]

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FreeBSD 12 — postfix — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — postfix — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 20 November 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: Postfix — memory corruption vulnerability Related CVEs: CVE-2011-0411 CVE-2011-1720 Upstream summary: The Postfix SMTP server has a memory corruption error, when the Cyrus SASL library is used with authentication mechanisms […]

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FreeBSD 12 — py27-foolscap — security advisory — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — py27-foolscap — security advisory — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 20 November 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: py-foolscap — local file inclusion Upstream summary: Brian Warner reports: The "flappserver" feature was found to have a vulnerability in the service-lookup code which, when combined with an attacker who […]

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How to Harden Web Servers: Security Headers, CSP and HSTS on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Harden Web Servers: Security Headers, CSP and HSTS on RHEL 8

HTTP security headers instruct browsers how to handle your site’s content and protect visitors from clickjacking, cross-site scripting, MIME sniffing, and other common attacks. Adding these headers to Nginx or Apache on RHEL 8 is a high-value, low-effort hardening step that improves both your security posture and your score on tools like securityheaders.com. This tutorial […]

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