Linux

How to Configure HashiCorp Vault on CentOS Stream 9 — step-by-step CentOS Stream 9 tutorial on Progressive Robot

How to Configure HashiCorp Vault on CentOS Stream 9

Introduction Setting up configure hashicorp vault on centos stream 9 on a CentOS Stream 9 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Configure HashiCorp Vault on CentOS Stream 9, with all the commands you need, the SELinux and firewalld considerations to keep in […]

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

Debian 11 — acl — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 19 April 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2009-4411 Upstream summary: The (1) setfacl and (2) getfacl commands in XFS acl 2.2.47, when running in recursive (-R) mode, follow symbolic links even when the –physical (aka […]

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Debian 11 — munin — multiple vulnerabilities (9 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — munin — multiple vulnerabilities (9 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 19 April 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2012-2103 CVE-2012-2104 CVE-2012-2147 CVE-2012-3512 CVE-2012-3513 CVE-2012-4678 CVE-2013-6048 CVE-2013-6359  +1 more Upstream summary: The qmailscan plugin for Munin 1.4.5 allows local users to overwrite arbitrary files via a symlink […]

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Alpine Linux edge — u-boot — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — u-boot — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 2021.04-r0 📖 ~4 min read  •  Source: Alpine secdb entry — u-boot 2021.04-r0 Related CVEs: CVE-2021-27097 CVE-2021-27138 Upstream summary: Alpine main repository for vedge ships u-boot 2021.04-r0 which addresses CVE-2021-27097. Table of contents Symptom & Impact […]

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

Debian 11 — zutils — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 19 April 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2018-1000637 Upstream summary: zutils version prior to version 1.8-pre2 contains a Buffer Overflow vulnerability in zcat that can result in Potential denial of service or arbitrary code execution. […]

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How to Configure Jenkins Pipelines on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Configure Jenkins Pipelines on Debian 9

Introduction This guide explains how to Configure Jenkins Pipelines on Debian 9 on Debian 9 Stretch. Debian Stretch uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian 9 install with the standard […]

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Oracle Linux 8 — systemd — security and stability fixes — required update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — systemd — security and stability fixes — required update (ELSA-2023-0100)

🟡 Medium   ⏱ 10–30 min  Last verified: 19 April 2022 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-0100 Related CVEs: CVE-2022-3821 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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Alpine Linux edge — minio-client — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — minio-client — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 0.20230111.031416-r0 📖 ~4 min read  •  Source: Alpine secdb entry — minio-client 0.20230111.031416-r0 Related CVEs: CVE-2022-41717 Upstream summary: Alpine community repository for vedge ships minio-client 0.20230111.031416-r0 which addresses CVE-2022-41717. Table of contents Symptom & Impact Environment […]

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

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

🟠 High   ⏱ 15–60 min  Last verified: 19 April 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2003-0048 CVE-2003-0069 CVE-2004-1008 CVE-2004-1440 CVE-2005-0467 CVE-2006-7162 CVE-2011-4607 CVE-2013-4206  +12 more Upstream summary: PuTTY 0.53b and earlier does not clear logon credentials from memory, including plaintext passwords, which could […]

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Ubuntu 16.04 — opusfile — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — opusfile — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 19 April 2022 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5937-1 Related CVEs: CVE-2022-47021 Upstream summary: It was discovered that Opusfile was not properly validating pointer arguments in some of its functions, which could lead to a NULL pointer dereference. […]

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