Operations

Windows Server 2016 — KB5033369 — multiple vulnerabilities (12 CVEs) — patch and remediation guide

• April 10, 2023
• Windows Server
• Comment off

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Windows Server 2016 📖 ~4 min read  •  Source: Microsoft KB5033369 • MSRC update-guide entry Related CVEs: CVE-2023-35641 CVE-2023-35628 CVE-2023-35630 CVE-2023-36011 CVE-2023-21740 CVE-2023-20588 CVE-2023-36003 CVE-2023-36004  +4 more Affected components: Windows Server 2016 Table of contents Symptom & Impact Environment & Reproduction Root […]

Read more

Oracle Linux 9 — git — security and stability fixes — required update (ELSA-2023-2319)

• April 9, 2023
• Linux
• Comment off

🟡 Medium   ⏱ 10–30 min  Last verified: 9 April 2023 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-2319 Related CVEs: CVE-2022-39253 CVE-2022-24765 CVE-2022-29187 CVE-2022-39260 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches […]

Read more

Ubuntu 20.04 LTS – netplan apply fails due to YAML syntax errors

• April 9, 2023
• Linux
• Comment off

🟠 High   ⏱ 5–30 min  Last verified: 9 April 2023 Affected versions: Ubuntu 20.04 LTS Ubuntu 20.04 Ubuntu 20.04.6 📖 ~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 […]

Read more

How to Install PHP 8.3 on Oracle Linux 9

• April 9, 2023
• Oracle Linux
• Comment off

Introduction This tutorial demonstrates how to Install PHP 8.3 on Oracle Linux 9 on Oracle Linux 9. It is written for administrators who want a repeatable, well-explained walkthrough that goes beyond a bare command list and explains each configuration choice. Every command is tested against a freshly registered Oracle Linux 9 system with the default […]

Read more

Amazon Linux 2023 — libksba — vulnerability — patch and remediation guide

• April 9, 2023
• Linux
• Comment off

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2023 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2023-2023-088 Related CVEs: CVE-2022-3515 Upstream summary: A vulnerability was found in the Libksba library due to an integer overflow within the CRL parser. The vulnerability can be exploited remotely for […]

Read more

Windows Server 2022 — IIS site returns 503 Service Unavailable due identity password expiry — Fix & Prevention

• April 9, 2023
• Tutorials
• Comment off

🟠 High   ⏱ 5–30 min  Last verified: 9 April 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 […]

Read more

IBM AIX 7.1 — CVE-2023-43035 — vulnerability — patch and remediation guide

• April 9, 2023
• Tutorials
• Comment off

🟡 Medium   ⏱ 15–45 min  Last verified: 9 April 2023 Affected versions: IBM AIX 7.1 📖 ~4 min read  •  Source: NVD CVE-2023-43035, IBM Support Bulletin CVE: CVE-2023-43035 NVD summary: IBM Sterling Control Center 6.2.1, 6.3.1, and 6.4.0 allows web pages to be stored locally which can be read by another user on the […]

Read more

Alpine Linux edge — rxvt-unicode — multiple vulnerabilities (2 CVEs) — patch and remediation guide

• April 9, 2023
• Linux
• Comment off

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 9.31-r0 📖 ~4 min read  •  Source: Alpine secdb entry — rxvt-unicode 9.31-r0 Related CVEs: CVE-2022-4170 CVE-2021-33477 Upstream summary: Alpine community repository for vedge ships rxvt-unicode 9.31-r0 which addresses CVE-2022-4170. Table of contents Symptom & Impact […]

Read more

Debian 11 — cyrus-sasl2 — multiple vulnerabilities (8 CVEs) — patch and remediation guide

• April 9, 2023
• Linux
• Comment off

🟡 Medium   ⏱ 10–30 min  Last verified: 9 April 2023 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2002-1347 CVE-2004-0884 CVE-2005-0373 CVE-2006-1721 CVE-2009-0688 CVE-2013-4122 CVE-2019-19906 CVE-2022-24407 Upstream summary: Multiple buffer overflows in Cyrus SASL library 2.1.9 and earlier allow remote attackers to cause a denial of […]

Read more

Ubuntu 22.04 — libnet-cidr-perl — vulnerability — patch and remediation guide

• April 9, 2023
• Linux
• Comment off

🟢 Low   ⏱ 5–15 min  Last verified: 9 April 2023 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8110-1 Related CVEs: CVE-2021-4456 Upstream summary: Dave Rolsky discovered that Net-CIDR did not properly sanitize IP addresses. An attacker could possibly use this to bypass IP-based restrictions. Table of contents […]

Read more