Package Management

Ubuntu 16.04 — open-iscsi — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — open-iscsi — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 17 May 2020 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6259-1 Related CVEs: CVE-2020-13987 CVE-2020-13988 CVE-2020-17437 Upstream summary: Jos Wetzels, Stanislav Dashevskyi, and Amine Amri discovered that Open-iSCSI incorrectly handled certain checksums for IP packets. An attacker could possibly use […]

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How to Configure rkhunter Rootkit Scanner on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Configure rkhunter Rootkit Scanner on Debian 10

Introduction How to Configure rkhunter Rootkit Scanner on Debian 10 is a fundamental operation for any administrator maintaining a Debian 10 Buster server. Debian 10 Buster ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from Debian 10. […]

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Ubuntu 20.04 — imlib2 — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — imlib2 — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 17 May 2020 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5099-1 Related CVEs: CVE-2020-12761 Upstream summary: It was discovered that Imlib2 incorrectly handled certain ICO images. An attacker could use this issue to cause a denial of service and possibly […]

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

Ubuntu 16.04 — libpcap — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 17 May 2020 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4221-1 Related CVEs: CVE-2019-15165 Upstream summary: It was discovered that libpcap did not properly validate PHB headers in some situations. An attacker could use this to cause a denial of […]

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Ubuntu 14.04 — ansible — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 14.04

Ubuntu 14.04 — ansible — multiple vulnerabilities (8 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 17 May 2020 Affected versions: Ubuntu 14.04 (trusty) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7330-1 Related CVEs: CVE-2015-3908 CVE-2015-6240 CVE-2016-8614 CVE-2019-10206 CVE-2019-14846 CVE-2019-14904 CVE-2020-10729 CVE-2020-1739 Upstream summary: It was discovered that Ansible did not properly verify certain fields of X.509 certificates. An attacker could […]

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Oracle Linux 8 — libxml2 — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — libxml2 — vulnerability — patch and remediation guide (ELSA-2020-1827)

🟡 Medium   ⏱ 10–30 min  Last verified: 17 May 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-1827 Related CVEs: CVE-2018-14404 CVE-2018-9251 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & […]

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openSUSE Tumbleweed — podofo — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — podofo — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2022:1316-1 (see also SUSE bugzilla) Related CVEs: CVE-2019-20093 CVE-2018-12983 CVE-2019-10723 CVE-2017-5852 CVE-2017-5853 CVE-2017-5854 CVE-2017-5855 CVE-2017-5886  +12 more Upstream summary: The PoDoFo::PdfVariant::DelayedLoad function in PdfVariant.h in PoDoFo 0.9.6 allows remote attackers to cause […]

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How to Install and Configure SQLite on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Install and Configure SQLite on RHEL 8

SQLite is a serverless, file-based relational database engine that requires no installation of a separate server process and no ongoing administration. It stores an entire database — tables, indexes, and data — in a single cross-platform file, making it ideal for development environments, embedded applications, configuration stores, and lightweight production workloads that do not need […]

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Common Problems 121050

Debian 10 – sudo Stops Working Due to Broken Permissions – Emergency Repair

🔴 Critical   ⏱ 5–30 min  Last verified: 16 May 2020 Affected versions: Debian 10 📖 ~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 12 — php5-mysqli — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — php5-mysqli — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 16 May 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: mysql — SSL Downgrade Related CVEs: CVE-2015-3152 Upstream summary: Duo Security reports: Researchers have identified a serious vulnerability in some versions of Oracle’s MySQL database product that allows an attacker […]

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