Logging Monitoring

Oracle Linux 8 — xorg-x11-server-Xwayland — security and stability fixes — required update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — xorg-x11-server-Xwayland — security and stability fixes — required update (ELSA-2023-6917)

🟡 Medium   ⏱ 10–30 min  Last verified: 2 January 2022 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-6917 Related CVEs: CVE-2023-1393 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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AlmaLinux 8 — cockpit-session-recording — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — cockpit-session-recording — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALBA-2022:1859 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 […]

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How to Configure Network Interfaces with nmcli on CentOS Stream 9 — step-by-step CentOS Stream 9 tutorial on Progressive Robot

How to Configure Network Interfaces with nmcli on CentOS Stream 9

Introduction CentOS Stream 9 ships with a stable, security-hardened base that makes deploying configure network interfaces with nmcli on centos stream 9 both straightforward and auditable. This tutorial covers the complete procedure for how to Configure Network Interfaces with nmcli on CentOS Stream 9, including dnf module streams where applicable, systemd unit management, and the […]

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FreeBSD 13 — rubygem18-rack — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — rubygem18-rack — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 2 January 2022 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: Ruby Rack Gem — Multiple Issues Related CVEs: CVE-2013-0262 CVE-2013-0263 Upstream summary: Rack developers report: Today we are proud to announce the release of Rack 1.4.5. Fix CVE-2013-0263, timing attack […]

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Debian 11 — paste — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — paste — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 2 January 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2010-2477 Upstream summary: Multiple cross-site scripting (XSS) vulnerabilities in the paste.httpexceptions implementation in Paste before 1.7.4 allow remote attackers to inject arbitrary web script or HTML via vectors […]

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AlmaLinux 8 — stunnel — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — stunnel — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2021:0618 Related CVEs: CVE-2021-20230 Upstream summary: Stunnel is a wrapper for network connections. It can be used to tunnel an unencrypted network connection over an encrypted connection (encrypted using SSL or TLS) […]

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Debian 11 — hercules — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — hercules — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 2 January 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2009-3736 Upstream summary: ltdl.c in libltdl in GNU Libtool 1.5.x, and 2.2.6 before 2.2.6b, as used in Ham Radio Control Libraries, Q, and possibly other products, attempts to […]

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Debian 11 — gitolite3 — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — gitolite3 — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 2 January 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2013-7203 CVE-2018-16976 CVE-2018-20683 Upstream summary: gitolite before commit fa06a34 might allow local users to read arbitrary files in repositories via vectors related to the user umask when running […]

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How to Harden Web Servers on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Harden Web Servers on FreeBSD 12

Introduction Deploying harden web servers on freebsd 12 on a FreeBSD 12 machine differs from Linux in several important ways: packages come from the FreeBSD Ports Collection or the binary pkg repository, services are registered in /etc/rc.conf via sysrc(8), and firewall rules are written in pf.conf(5) syntax. This tutorial stays entirely within the standard base […]

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Debian 11 — ssmtp — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — ssmtp — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 2 January 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2004-0156 CVE-2004-0423 CVE-2008-3962 CVE-2008-7258 Upstream summary: Format string vulnerabilities in the (1) die or (2) log_event functions for ssmtp before 2.50.6 allow remote mail relays to cause a […]

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