Logging Monitoring

Amazon Linux 2023 — openvpn — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2023

Amazon Linux 2023 — openvpn — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2023 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2023-2025-1312 Related CVEs: CVE-2025-13086 CVE-2026-35058 CVE-2026-40215 CVE-2025-2704 Upstream summary: HMAC verification check: fix incorrect memcmp() call NOTE: https://community.openvpn.net/Security%20Announcements/CVE-2025-13086 (CVE-2025-13086) Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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FreeBSD 15 — lighttpd — multiple vulnerabilities (19 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 15

FreeBSD 15 — lighttpd — multiple vulnerabilities (19 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 13 March 2026 Affected versions: FreeBSD 15 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: lighttpd – use-after-free vulnerabilities Related CVEs: CVE-2005-0453 CVE-2007-1869 CVE-2007-1870 CVE-2007-3947 CVE-2007-3948 CVE-2007-3949 CVE-2007-3950 CVE-2007-4727  +11 more Upstream summary: Lighttpd Project reports: Security fixes for Lighttpd: security: process headers after combining […]

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Alpine Linux edge — wolfssl — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — wolfssl — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 5.9.1-r0 📖 ~4 min read  •  Source: Alpine secdb entry — wolfssl 5.9.1-r0 Related CVEs: CVE-2026-5187 CVE-2026-5188 CVE-2026-5194 CVE-2026-5263 CVE-2026-5264 CVE-2026-5295 CVE-2026-5392 CVE-2026-5446  +12 more Upstream summary: Alpine community repository for vedge ships wolfssl 5.9.1-r0 which […]

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FreeBSD 13 — net-snmp — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — net-snmp — multiple vulnerabilities (8 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 13 March 2026 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: net-mgmt/net-snmp — Remote Code Execution (snmptrapd) Related CVEs: CVE-2005-1740 CVE-2005-2177 CVE-2007-5846 CVE-2008-4309 CVE-2012-2141 CVE-2014-3565 CVE-2015-5621 CVE-2025-68615 Upstream summary: net-snmp development team reports: A specially crafted packet to an net-snmp snmptrapd […]

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openSUSE Tumbleweed — postfix — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — postfix — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2026-43964 CVE-2023-51764 CVE-2023-32182 Upstream summary: Postfix before 3.8.16, 3.9 before 3.9.10, and 3.10 before 3.10.9 sometimes allows a buffer over-read and process crash via an […]

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FreeBSD 15 — arti — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 15

FreeBSD 15 — arti — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 13 March 2026 Affected versions: FreeBSD 15 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: Arti — Security issues related to circuit construction Related CVEs: CVE-2024-35312 CVE-2024-35313 Upstream summary: Tor Project reports: When building anonymizing circuits to or from an onion service with 'lite' vanguards […]

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How to Configure Prometheus AlertManager on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Configure Prometheus AlertManager on RHEL 9

Prometheus AlertManager is a standalone component of the Prometheus monitoring stack responsible for deduplicating, grouping, routing, and dispatching alerts to notification channels such as Slack, email, and PagerDuty. While Prometheus evaluates alerting rules and fires alerts, it is AlertManager that decides who gets notified, when, and how — preventing alert storms and on-call fatigue through […]

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Debian 13 — kdenlive — vulnerability — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — kdenlive — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 13 March 2026 Affected versions: Debian 13 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2026-45184 Upstream summary: Kdenlive before 26.04.1 allows dangerous proxy parameters when an attacker-controlled project file is used. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis […]

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