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How to Detect Rootkits with rkhunter and chkrootkit on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Detect Rootkits with rkhunter and chkrootkit on RHEL 9

Rootkits are among the most dangerous forms of malware — they conceal themselves and other malicious software deep within the operating system, often modifying system binaries and kernel modules to hide their presence from standard tools. Detecting rootkits requires specialised scanners that check for known signatures, hidden files, suspicious processes, and tampered system binaries. This […]

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Ubuntu 18.04 — node-css-what — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — node-css-what — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 31 May 2023 Affected versions: Ubuntu 18.04 (bionic) đź“– ~4 min read  â€˘  Source: Ubuntu Security Notice USN-6065-1 Related CVEs: CVE-2021-33587 CVE-2022-21222 Upstream summary: It was discovered that css-what incorrectly handled certain inputs. If a user or an automated system were tricked into opening a specially crafted […]

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Amazon Linux 2 — qt — multiple vulnerabilities (10 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — qt — multiple vulnerabilities (10 CVEs) — patch and remediation guide

đźź  High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 đź“– ~4 min read  â€˘  Source: Amazon Linux advisory ALAS2-2020-1574 Related CVEs: CVE-2020-17507 CVE-2023-38197 CVE-2023-32573 CVE-2023-34410 CVE-2018-15518 CVE-2018-19869 CVE-2018-19870 CVE-2018-19871  +2 more Upstream summary: An issue was discovered in Qt through 5.12.9, and 5.13.x through 5.15.x before 5.15.1. read_xbm_body […]

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

Oracle Linux 8 — emacs — vulnerability — patch and remediation guide (ELSA-2023-1930)

đźź  High   ⏱ 15–60 min  Last verified: 31 May 2023 Affected versions: Oracle Linux 8 đź“– ~4 min read  â€˘  Source: ELSA advisory ELSA-2023-1930 Related CVEs: CVE-2023-28617 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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NetBSD 9.4 — libXi — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on NetBSD 9.4

NetBSD 9.4 — libXi — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: NetBSD 9.4 đź“– ~4 min read  â€˘  Source: pkgsrc audit-packages entry Related CVEs: CVE-2016-7946 CVE-2016-7945 Upstream summary: pkgsrc audit-packages flagged libXi<1.7.2 for vulnerability class 'multiple-vulnerabilities'. Reference: http://www.debian.org/security/2013/dsa-2683 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step […]

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NetBSD 9.4 — zope211 — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on NetBSD 9.4

NetBSD 9.4 — zope211 — multiple vulnerabilities (3 CVEs) — patch and remediation guide

đźź  High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: NetBSD 9.4 đź“– ~4 min read  â€˘  Source: pkgsrc audit-packages entry Related CVEs: CVE-2009-0668 CVE-2009-0669 CVE-2010-3198 Upstream summary: pkgsrc audit-packages flagged zope211<2.11.4 for vulnerability class 'arbitrary-code-execution'. Reference: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0668 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage […]

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

Oracle Linux 8 — openssl — vulnerability — patch and remediation guide (ELSA-2022-5818)

🟡 Medium   ⏱ 10–30 min  Last verified: 31 May 2023 Affected versions: Oracle Linux 8 đź“– ~4 min read  â€˘  Source: ELSA advisory ELSA-2022-5818 Related CVEs: CVE-2022-2097 CVE-2022-1292 CVE-2022-2068 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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Oracle Linux 8 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide (ELSA-2023-12974)

đźź  High   ⏱ 15–60 min  Last verified: 31 May 2023 Affected versions: Oracle Linux 8 đź“– ~4 min read  â€˘  Source: ELSA advisory ELSA-2023-12974 Related CVEs: CVE-2023-1989 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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Windows Server 2019 — KB5032249 — multiple vulnerabilities (17 CVEs) — patch and remediation guide — diagnosis and fix on Windows Server 2019

Windows Server 2019 — KB5032249 — multiple vulnerabilities (17 CVEs) — patch and remediation guide

đź”´ Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Windows Server 2019 đź“– ~4 min read  â€˘  Source: Microsoft KB5032249 • MSRC update-guide entry Related CVEs: CVE-2023-36397 CVE-2023-36036 CVE-2023-36428 CVE-2023-36425 CVE-2023-36424 CVE-2023-36423 CVE-2023-36017 CVE-2023-36705  +9 more Affected components: Windows Server 2019 (Server Core installation) Table of contents Symptom & Impact Environment […]

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NetBSD 9.4 — streamripper — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on NetBSD 9.4

NetBSD 9.4 — streamripper — multiple vulnerabilities (3 CVEs) — patch and remediation guide

đźź  High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: NetBSD 9.4 đź“– ~4 min read  â€˘  Source: pkgsrc audit-packages entry Related CVEs: CVE-2006-3124 CVE-2007-4337 CVE-2008-4829 Upstream summary: pkgsrc audit-packages flagged streamripper<1.61.26 for vulnerability class 'remote-code-execution'. Reference: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-3124 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage […]

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