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How to Configure OpenDKIM with Postfix on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Configure OpenDKIM with Postfix on Debian 11

Introduction Deploying configure opendkim with postfix on debian 11 on a Debian 11 Bullseye machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. Prerequisites You will […]

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

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

🟠 High   ⏱ 15–60 min  Last verified: 6 August 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2017-12950 CVE-2017-12951 CVE-2017-12952 CVE-2017-12953 CVE-2017-12954 CVE-2018-14449 CVE-2018-14450 CVE-2018-14451  +12 more Upstream summary: The gig::Region::Region function in gig.cpp in libgig 4.0.0 allows remote attackers to cause a denial of […]

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Oracle Linux 8 — gnupg2 — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — gnupg2 — vulnerability — patch and remediation guide (ELSA-2022-6463)

🟡 Medium   ⏱ 10–30 min  Last verified: 6 August 2022 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-6463 Related CVEs: CVE-2022-34903 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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Ubuntu 16.04 — cifs-utils — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — cifs-utils — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 6 August 2022 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7688-1 Related CVEs: CVE-2022-27239 CVE-2021-20208 CVE-2020-14342 CVE-2022-29869 Upstream summary: Aurélien Aptel discovered that cifs-utils invoked a shell when requesting a password. In certain environments, a local attacker could possibly use […]

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Oracle Linux 8 — Unbreakable Enterprise kernel-container — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — Unbreakable Enterprise kernel-container — vulnerability — patch and remediation guide (ELSA-2022-9612)

🟠 High   ⏱ 15–60 min  Last verified: 6 August 2022 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-9612 Related CVEs: CVE-2022-21505 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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Oracle Linux 9 — firefox — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — firefox — vulnerability — patch and remediation guide (ELSA-2022-7020)

🟠 High   ⏱ 15–60 min  Last verified: 6 August 2022 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-7020 Related CVEs: CVE-2022-40674 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 — libarchive — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

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

🟠 High   ⏱ 15–60 min  Last verified: 6 August 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2006-5680 CVE-2007-3641 CVE-2007-3644 CVE-2007-3645 CVE-2010-4666 CVE-2011-1777 CVE-2011-1778 CVE-2011-1779  +12 more Upstream summary: The libarchive library in FreeBSD 6-STABLE after 2006-09-05 and before 2006-11-08 allows context-dependent attackers to cause […]

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How to Configure Group Managed Service Accounts (gMSA) on Windows Server 2016 — step-by-step Windows Server 2016 tutorial on Progressive Robot

How to Configure Group Managed Service Accounts (gMSA) on Windows Server 2016

How to Set Up Windows Server 2016 Group Managed Service Accounts Group Managed Service Accounts (gMSAs) extend the benefits of standalone Managed Service Accounts to multi-server environments. Introduced in Windows Server 2012, gMSAs are fully supported in Windows Server 2016 and allow multiple servers to share a single managed service account with automatic password rotation. […]

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Common Problems 116987

Ubuntu 22.04 UFW Rules Break Docker Container Connectivity

🟡 Medium   ⏱ 5–30 min  Last verified: 6 August 2022 📖 ~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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Oracle Linux 8 — http-parser — security and stability fixes — required update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — http-parser — security and stability fixes — required update (ELSA-2019-3497)

🟡 Medium   ⏱ 10–30 min  Last verified: 5 August 2022 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2019-3497 Related CVEs: CVE-2018-12121 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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