Linux

Debian 11 — tcpreplay — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — tcpreplay — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 April 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2016-6160 CVE-2017-14266 CVE-2018-13112 CVE-2018-17580 CVE-2018-17582 CVE-2018-17974 CVE-2018-18407 CVE-2018-18408  +12 more Upstream summary: tcprewrite in tcpreplay before 4.1.2 allows remote attackers to cause a denial of service (segmentation fault) […]

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Arch Linux — nginx-mainline — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — nginx-mainline — multiple vulnerabilities (6 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-201707-12 Related CVEs: CVE-2017-7529 CVE-2016-1247 CVE-2021-23017 CVE-2019-9516 CVE-2019-9513 CVE-2019-9511 Upstream summary: Type: information disclosure. Status: Fixed. Affected: 1.13.2-1. Fixed in: 1.13.3-1. Group: AVG-346. Table of contents Symptom & Impact Environment […]

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Debian 11 — libgd2 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — libgd2 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 April 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2004-0941 CVE-2004-0990 CVE-2006-2906 CVE-2006-4484 CVE-2007-0455 CVE-2007-1001 CVE-2007-2445 CVE-2007-2756  +12 more Upstream summary: Multiple buffer overflows in the gd graphics library (libgd) 2.0.21 and earlier may allow remote attackers […]

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How to Monitor Kubernetes with Prometheus and Grafana on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Monitor Kubernetes with Prometheus and Grafana on RHEL 7

How to Monitor Kubernetes with Prometheus and Grafana on RHEL 7 Operating a Kubernetes cluster without monitoring is like running a production database without logs — you will only know something is wrong after an outage has already started. Prometheus is the de facto standard for Kubernetes metrics collection, using a pull-based model where it […]

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Oracle Linux 8 — .NET 7.0 security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — .NET 7.0 security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2023-3593)

🟠 High   ⏱ 15–60 min  Last verified: 24 April 2022 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-3593 Related CVEs: CVE-2023-33128 CVE-2023-24936 CVE-2023-29331 CVE-2023-29337 CVE-2023-32032 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative […]

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Common Problems 120601

Debian 11 – Severe Clock Drift Breaks TLS and Kerberos – Chrony Stabilization

🟠 High   ⏱ 5–30 min  Last verified: 24 April 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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How to Set Up a LAMP Stack on CentOS Stream 9 — step-by-step CentOS Stream 9 tutorial on Progressive Robot

How to Set Up a LAMP Stack on CentOS Stream 9

Introduction CentOS Stream 9 ships with a stable, security-hardened base that makes deploying set up a lamp stack on centos stream 9 both straightforward and auditable. This tutorial covers the complete procedure for how to Set Up a LAMP Stack on CentOS Stream 9, including dnf module streams where applicable, systemd unit management, and the […]

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AlmaLinux 8 — spacewalk-backend — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — spacewalk-backend — 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-2019:3355 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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Debian 11 — gnulib — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — gnulib — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 24 April 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2009-5155 CVE-2018-17942 Upstream summary: In the GNU C Library (aka glibc or libc6) before 2.28, parse_reg_exp in posix/regcomp.c misparses alternatives, which allows attackers to cause a denial of […]

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