Operations

How to Extend the Active Directory Schema on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Extend the Active Directory Schema on Windows Server 2012 R2

How to Extend the Active Directory Schema on Windows Server 2012 R2 The Active Directory schema defines every object class and attribute that can exist in the directory. While the default schema covers most administrative and application needs, there are scenarios that require extending it — most commonly when installing Microsoft applications like Exchange Server, […]

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FreeBSD 13 — hive — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — hive — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 2 June 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: hive — authorization logic vulnerability Related CVEs: CVE-2015-7521 Upstream summary: Sushanth Sowmyan reports: Some partition-level operations exist that do not explicitly also authorize privileges of the parent table. This can […]

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FreeBSD 13 — php70-bz — multiple vulnerabilities (12 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — php70-bz — multiple vulnerabilities (12 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 2 June 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: php — multiple vulnerabilities Related CVEs: CVE-2015-8879 CVE-2016-5385 CVE-2016-5399 CVE-2016-6288 CVE-2016-6289 CVE-2016-6290 CVE-2016-6291 CVE-2016-6292  +4 more Upstream summary: PHP reports: Fixed bug #69975 (PHP segfaults when accessing nvarchar(max) defined columns) […]

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AlmaLinux 8 — tcsh — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — tcsh — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALBA-2022:1809 Upstream summary: For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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FreeBSD 13 — monkey — security advisory — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — monkey — security advisory — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 2 June 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: monkey — improper input validation vulnerability Upstream summary: Census Labs reports: We have discovered a remotely exploitable "improper input validation" vulnerability in the Monkey web server that allows an attacker […]

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Ubuntu 16.04 — libspf2 — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — libspf2 — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 2 June 2021 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6584-2 Related CVEs: CVE-2021-33912 CVE-2021-33913 CVE-2021-20314 Upstream summary: USN-6584-1 fixed several vulnerabilities in Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. This update provides the corresponding updates for CVE-2021-33912 and CVE-2021-33913 […]

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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-2021-9038)

🟠 High   ⏱ 15–60 min  Last verified: 2 June 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-9038 Related CVEs: CVE-2020-28374 CVE-2021-20177 CVE-2020-29568 CVE-2020-29660 CVE-2020-36158 CVE-2020-29569 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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How to Set Up Windows Server 2019 Semi-Annual Channel vs Long-Term Servicing Channel — step-by-step Windows Server 2019 tutorial on Progressive Robot

How to Set Up Windows Server 2019 Semi-Annual Channel vs Long-Term Servicing Channel

Understanding the Two Windows Server 2019 Servicing Channels Microsoft offers Windows Server through two distinct servicing models: the Long-Term Servicing Channel (LTSC) and the Semi-Annual Channel (SAC). Choosing between them affects how frequently you receive new features, how long you receive security support, and what workloads are supported. Windows Server 2019 itself is an LTSC […]

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Oracle Linux 8 — evolution — security and stability fixes — required update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — evolution — security and stability fixes — required update (ELSA-2019-3699)

🟡 Medium   ⏱ 10–30 min  Last verified: 1 June 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2019-3699 Related CVEs: CVE-2019-3890 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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FreeBSD 12 — py37-pillow — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — py37-pillow — multiple vulnerabilities (6 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 1 June 2021 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: Pillow — Multiple vulnerabilities Related CVEs: CVE-2019-16865 CVE-2019-19911 CVE-2020-5310 CVE-2020-5311 CVE-2020-5312 CVE-2020-5313 Upstream summary: Pillow developers report: This release addresses several security problems, as well as addressing CVE-2019-19911. CVE-2019-19911 is […]

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