Logging Monitoring

Ubuntu 16.04 — snakeyaml — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — snakeyaml — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 17 September 2022 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7368-1 Related CVEs: CVE-2017-18640 CVE-2022-25857 CVE-2022-38749 CVE-2022-38750 CVE-2022-38751 Upstream summary: It was discovered that SnakeYAML incorrectly handled recursive entity references. An attacker could possibly use this issue to cause SnakeYAML […]

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SLES 12 — prometheus-ha_cluster_exporter — vulnerability — patch and remediation guide — diagnosis and fix on SLES 12

SLES 12 — prometheus-ha_cluster_exporter — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 17 September 2022 Affected versions: SLES 12 📖 ~4 min read  •  Source: SUSE advisory SUSE-CU-2023:1465-1 (see also SUSE bugzilla) Related CVEs: CVE-2022-46146 Upstream summary: Prometheus Exporter Toolkit is a utility package to build exporters. Prior to versions 0.7.2 and 0.8.2, if someone has access to a […]

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AlmaLinux 8 — libvisual — multiple vulnerabilities (12 CVEs) — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — libvisual — multiple vulnerabilities (12 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2021:1586 Related CVEs: CVE-2019-13012 CVE-2020-13543 CVE-2020-13584 CVE-2020-16125 CVE-2020-9948 CVE-2020-9951 CVE-2020-9983 CVE-2021-1817  +4 more Upstream summary: GNOME is the default desktop environment of AlmaLinux. The following packages have been upgraded to a later […]

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SLES 15 — python311-Pillow — multiple vulnerabilities (11 CVEs) — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — python311-Pillow — multiple vulnerabilities (11 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 17 September 2022 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2025:14645-1 (see also SUSE bugzilla) Related CVEs: CVE-2022-30595 CVE-2020-35653 CVE-2020-35655 CVE-2021-25291 CVE-2014-3589 CVE-2014-3598 CVE-2016-0740 CVE-2016-0775  +3 more Upstream summary: libImaging/TgaRleDecode.c in Pillow 9.1.0 has a heap buffer overflow in the processing of […]

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openSUSE Tumbleweed — jawn-ast — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — jawn-ast — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2022:0011-1 (see also SUSE bugzilla) Related CVEs: CVE-2022-21653 Upstream summary: Jawn is an open source JSON parser. Extenders of the `org.typelevel.jawn.SimpleFacade` and `org.typelevel.jawn.MutableFacade` who don't override `objectContext()` are vulnerable to a hash […]

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How to Set Up Grafana Alerting and Notification Channels on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Set Up Grafana Alerting and Notification Channels on RHEL 9

Grafana Unified Alerting, introduced in Grafana 9 and enabled by default in Grafana 10+, provides a centralised alerting engine that works across all data sources and replaces the older per-panel Legacy Alerting system. On RHEL 9, configuring Grafana alerting correctly means setting up contact points for notification delivery, building a notification policy routing tree that […]

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IBM AIX 7.3 — CVE-2021-29813 — xss — patch and remediation guide — diagnosis and fix on IBM AIX 7.3

IBM AIX 7.3 — CVE-2021-29813 — xss — patch and remediation guide

🟡 Medium   ⏱ 15–45 min  Last verified: 16 September 2022 Affected versions: IBM AIX 7.3 📖 ~4 min read  •  Source: NVD CVE-2021-29813, IBM Support Bulletin CVE: CVE-2021-29813 NVD summary: IBM Jazz for Service Management 1.1.3.10 and IBM Tivoli Netcool/OMNIbus_GUI is vulnerable to stored cross-site scripting. This vulnerability allows users to embed arbitrary JavaScript […]

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Common Problems 120538

Debian 11 – update-initramfs fails with missing modules or hooks

🟠 High   ⏱ 5–30 min  Last verified: 16 September 2022 Affected versions: Debian 11 📖 ~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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FreeBSD 13 — mutt-lite — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — mutt-lite — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 16 September 2022 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: mutt — buffer overflow vulnerability Related CVEs: CVE-2007-2683 Upstream summary: Securityfocus reports: Mutt is prone to a local buffer-overflow vulnerability because it fails to properly bounds-check user-supplied input before using […]

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CHAT