Logging Monitoring

How to Install Ansible on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Install Ansible on FreeBSD 13

Introduction How to Install Ansible on FreeBSD 13 is a core administration task for any FreeBSD 13 server operator. FreeBSD 13 ships with the 15.0-RELEASE kernel, ZFS as the default root filesystem, Capsicum capability sandboxing improvements, and an updated ports tree. Unlike Linux distributions, FreeBSD uses rc(8) for service management, pf for packet filtering, and […]

Read more
Debian 11 — liece — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — liece — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 27 August 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2003-0537 Upstream summary: The liece Emacs IRC client 2.0+0.20030527 and earlier creates temporary files insecurely, which could allow local users to overwrite arbitrary files as other users. Table […]

Read more
Debian 11 — libdbd-firebird-perl — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — libdbd-firebird-perl — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 27 August 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2015-2788 Upstream summary: Multiple stack-based buffer overflows in the ib_fill_isqlda function in dbdimp.c in DBD-Firebird before 1.19 allow remote attackers to have unspecified impact via unknown vectors that […]

Read more
Ubuntu 20.04 — numpy — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — numpy — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 27 August 2021 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5763-1 Related CVEs: CVE-2021-33430 CVE-2021-34141 CVE-2021-41495 CVE-2021-41496 Upstream summary: It was discovered that NumPy did not properly manage memory when specifying arrays of large dimensions. If a user were tricked […]

Read more
AlmaLinux 8 — file — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — file — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2021:4374 Related CVEs: CVE-2019-18218 Upstream summary: The file command is used to identify a particular file according to the type of data the file contains. It can identify many different file types, […]

Read more
How to Perform a System Security Audit with auditd on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Perform a System Security Audit with auditd on RHEL 7

How to Perform a System Security Audit with auditd on RHEL 7 Security auditing is a critical practice for any production RHEL 7 system, especially those subject to compliance frameworks such as PCI-DSS, HIPAA, or DISA STIG. The Linux Audit Framework, centered on the auditd daemon, provides kernel-level monitoring of system calls, file access, user […]

Read more
FreeBSD 13 — p5-RT-Authen-ExternalAuth — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — p5-RT-Authen-ExternalAuth — multiple vulnerabilities (6 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 26 August 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: rt and dependent modules — multiple security vulnerabilities Related CVEs: CVE-2012-2770 CVE-2015-7686 CVE-2016-6127 CVE-2017-5361 CVE-2017-5943 CVE-2017-5944 Upstream summary: BestPractical reports: Please reference CVE/URL list for details Table of contents Symptom […]

Read more
Oracle Linux 8 — libldb security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — libldb security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2020-4568)

🟡 Medium   ⏱ 10–30 min  Last verified: 26 August 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-4568 Related CVEs: CVE-2020-10730 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

Read more
Debian 11 — chasen — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — chasen — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 26 August 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2011-4000 Upstream summary: Buffer overflow in ChaSen 2.4.x allows remote attackers to execute arbitrary code via a crafted string. Table of contents Symptom & Impact Environment & Reproduction […]

Read more
Common Problems 117597

Ubuntu 20.04 LTS – multipathd causes delayed boot on single-disk VM – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 26 August 2021 Affected versions: Ubuntu 20.04 LTS 📖 ~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 […]

Read more
CHAT