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Oracle Linux 9 — libtasn1 — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — libtasn1 — vulnerability — patch and remediation guide (ELSA-2023-0343)

🟡 Medium   ⏱ 10–30 min  Last verified: 15 January 2023 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-0343 Related CVEs: CVE-2021-46848 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 8 — emacs — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — emacs — vulnerability — patch and remediation guide (ELSA-2023-7083)

🟡 Medium   ⏱ 10–30 min  Last verified: 15 January 2023 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-7083 Related CVEs: CVE-2022-48339 CVE-2022-48337 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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How to Set Up DirectAccess on Windows Server 2022 — step-by-step Windows Server 2022 tutorial on Progressive Robot

How to Set Up DirectAccess on Windows Server 2022

Why PowerShell Logging Matters for Security PowerShell is the most powerful scripting environment on Windows Server 2022, and that power makes it a favourite tool for both administrators and attackers. Malware, ransomware loaders, and post-exploitation frameworks such as Empire, Cobalt Strike, and Metasploit all leverage PowerShell heavily. Without logging, PowerShell activity is largely invisible — […]

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Red Hat Enterprise Linux 7 — perl — vulnerability — patch and remediation guide — diagnosis and fix on Red Hat Enterprise Linux 7

Red Hat Enterprise Linux 7 — perl — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Red Hat Enterprise Linux 7 📖 ~4 min read  •  Source: Red Hat advisory RHSA RHSA-2026:0079 Related CVEs: CVE-2023-31484 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative […]

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Common Problems 111828

Windows Server 2022 — SQL Server backup jobs fail due VSS writer unstable state — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 15 January 2023 Affected versions: Windows Server 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 […]

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Common Problems 116889

Ubuntu 22.04 LTS – apt update fails because dpkg lock is held

🟠 High   ⏱ 5–30 min  Last verified: 14 January 2023 Affected versions: Ubuntu 22.04 LTS Ubuntu 22.04 Ubuntu 22.04.4 📖 ~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 […]

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FreeBSD 12 — py39-tensorflow — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — py39-tensorflow — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 14 January 2023 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: py-tensorflow — denial of service vulnerability Related CVEs: CVE-2022-35935 CVE-2022-35941 CVE-2022-35991 Upstream summary: Kang Hong Jin, Neophytos Christou, 刘力源 and Pattarakrit Rattankul report: Another instance of CVE-2022-35935, where `SobolSample` is […]

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Debian 11 — liboggplay — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — liboggplay — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 14 January 2023 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2009-3378 CVE-2009-3388 Upstream summary: The oggplay_data_handle_theora_frame function in media/liboggplay/src/liboggplay/oggplay_data.c in liboggplay, as used in Mozilla Firefox 3.5.x before 3.5.4, attempts to reuse an earlier frame data structure upon […]

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Common Problems 115475

RHEL 7 chronyd Not Syncing Time

🟡 Medium   ⏱ 5–30 min  Last verified: 14 January 2023 Affected versions: RHEL 7 📖 ~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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Common Problems 114621

RHEL 9 package transactions hang due to lock contention

🟡 Medium   ⏱ 5–30 min  Last verified: 14 January 2023 📖 ~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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