Linux

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

Oracle Linux 8 — expat — vulnerability — patch and remediation guide (ELSA-2022-5314)

🟡 Medium   ⏱ 10–30 min  Last verified: 15 August 2022 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-5314 Related CVEs: CVE-2022-25313 CVE-2022-25314 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 9 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide (ELSA-2022-9827)

🟠 High   ⏱ 15–60 min  Last verified: 15 August 2022 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-9827 Related CVEs: CVE-2022-2586 CVE-2022-21385 CVE-2022-2588 CVE-2022-34918 CVE-2022-2585 CVE-2022-21546 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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

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

🟠 High   ⏱ 15–60 min  Last verified: 15 August 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2018-17480 CVE-2018-17481 CVE-2018-18335 CVE-2018-18336 CVE-2018-18337 CVE-2018-18338 CVE-2018-18339 CVE-2018-18340  +12 more Upstream summary: Execution of user supplied Javascript during array deserialization leading to an out of bounds write in […]

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How to Configure Infrastructure as Code with Pulumi on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Configure Infrastructure as Code with Pulumi on RHEL 8

Pulumi is an Infrastructure as Code platform that lets you define cloud resources using general-purpose programming languages such as Python, TypeScript, or Go, rather than a domain-specific language. On RHEL 8, Pulumi pairs naturally with the existing Python ecosystem, allowing you to create and manage AWS resources using familiar constructs like loops, functions, and modules. […]

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Common Problems 117121

Ubuntu 22.04 LTS – Secure Boot blocks unsigned DKMS module loading – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 15 August 2022 Affected versions: Ubuntu 22.04 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 […]

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Oracle Linux 8 — pcre2 security and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — pcre2 security and — enhancement update — new behaviour and fixes (ELSA-2020-4539)

🟡 Medium   ⏱ 10–30 min  Last verified: 14 August 2022 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-4539 Related CVEs: CVE-2019-20454 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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Debian 11 — duo-unix — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — duo-unix — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 14 August 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-12135 Upstream summary: bson before 0.8 incorrectly uses int rather than size_t for many variables, parameters, and return values. In particular, the bson_ensure_space() parameter bytesNeeded could have an […]

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Debian 11 — nmap — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — nmap — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 14 August 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2013-4885 CVE-2017-18594 CVE-2018-1000161 CVE-2018-15173 Upstream summary: The http-domino-enum-passwords.nse script in NMap before 6.40, when domino-enum-passwords.idpath is set, allows remote servers to upload "arbitrarily named" files via a crafted […]

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Common Problems 120699

Debian 11 – Fail2ban blocks internal monitoring and trusted hosts

🟡 Medium   ⏱ 5–30 min  Last verified: 14 August 2022 Affected versions: Debian 11 📖 ~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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