Package Management

How to Harden PHP on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Harden PHP on RHEL 7

How to Harden PHP on RHEL 7 PHP is one of the most widely deployed server-side languages in the world, and its default configuration is designed for convenience rather than security. On a production RHEL 7 server, leaving PHP at its defaults exposes your system to information disclosure, remote file inclusion, code injection, and privilege […]

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SLES 15 — perl-File-Find-Rule — vulnerability — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — perl-File-Find-Rule — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 December 2019 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory RHSA-2025:9517 (see also SUSE bugzilla) Related CVEs: CVE-2011-10007 Upstream summary: File::Find::Rule through 0.34 for Perl is vulnerable to Arbitrary Code Execution when `grep()` encounters a crafted filename. A file handle is opened […]

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Debian 10 — openexr — vulnerability — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — openexr — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 December 2019 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2017-9111 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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How to Install phpMyAdmin on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Install phpMyAdmin on RHEL 8

phpMyAdmin is a popular web-based interface for managing MySQL and MariaDB databases, offering a graphical alternative to the command line. On RHEL 8, you can install it quickly from the EPEL repository, which provides community-maintained packages not included in the default RHEL channels. After installation, a few configuration steps secure access and integrate phpMyAdmin with […]

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Common Problems 117981

Ubuntu 18.04 Disk Full on Root Partition

🟡 Medium   ⏱ 5–30 min  Last verified: 24 December 2019 📖 ~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 & Cross-Refs References & Further […]

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How to Configure Infrastructure as Code on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Configure Infrastructure as Code on FreeBSD 12

Introduction This guide explains how to Configure Infrastructure as Code on FreeBSD 12 on FreeBSD 12. FreeBSD uses the pkg(8) binary package manager, rc.conf(5) for service startup configuration, and pf(4) as its primary packet filter. There is no SELinux or AppArmor — instead, FreeBSD provides the MAC (Mandatory Access Control) framework and Capsicum for fine-grained […]

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SLES 12 — libyaml-cpp0_5 — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on SLES 12

SLES 12 — libyaml-cpp0_5 — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 24 December 2019 Affected versions: SLES 12 📖 ~4 min read  •  Source: SUSE advisory SUSE-CU-2022:1765-1 (see also SUSE bugzilla) Related CVEs: CVE-2018-20573 CVE-2018-20574 CVE-2019-6285 CVE-2019-6292 CVE-2017-5950 Upstream summary: The Scanner::EnsureTokensInQueue function in yaml-cpp (aka LibYaml-C++) 0.6.2 allows remote attackers to cause a denial of service (stack […]

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How to Sync Time with Chrony on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Sync Time with Chrony on RHEL 8

Accurate system time is essential for security certificates, log correlation, scheduled jobs, and Kerberos authentication. RHEL 8 ships with Chrony as its default NTP implementation, replacing the older ntpd daemon. Chrony is faster to synchronize on startup, handles intermittent network connections well, and is better suited to virtual machines. This guide covers installing and configuring […]

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

openSUSE Tumbleweed — groff — 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-2009-5044 CVE-2009-5080 CVE-2009-5081 Upstream summary: contrib/pdfmark/pdfroff.sh in GNU troff (aka groff) before 1.21 allows local users to overwrite arbitrary files via a symlink attack on […]

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How to Configure Cloud-Init on IBM AIX 7.1 — step-by-step IBM AIX 7.1 tutorial on Progressive Robot

How to Configure Cloud-Init on IBM AIX 7.1

Introduction IBM AIX 7.1 is the latest release of IBM’s enterprise-grade UNIX operating system, running on IBM Power Systems hardware. Known for its reliability, security, and performance in mission-critical environments, AIX 7.1 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to configure cloud-init on ibm aix 7.1 on IBM AIX […]

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