Package Management

Debian 11 — astropy — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — astropy — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 30 April 2023 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2023-41334 Upstream summary: Astropy is a project for astronomy in Python that fosters interoperability between Python astronomy packages. Version 5.3.2 of the Astropy core package is vulnerable to […]

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Ubuntu 22.04 — cryptojs — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — cryptojs — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 30 April 2023 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6753-1 Related CVEs: CVE-2023-46233 Upstream summary: Thomas Neil James Shadwell discovered that CryptoJS was using an insecure cryptographic default configuration. A remote attacker could possibly use this issue to expose […]

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Windows Server 2022 — KB5032336 — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Windows Server 2022

Windows Server 2022 — KB5032336 — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Windows Server 2022 📖 ~4 min read  •  Source: Microsoft KB5032336 • MSRC update-guide entry Related CVEs: CVE-2023-36560 CVE-2023-36049 Affected components: Microsoft .NET Framework 3.5 AND 4.8.1 on Windows Server 2022, 23H2 Edition (Server Core installation) Table of contents Symptom & Impact […]

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Ubuntu 18.04 — apr-util — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — apr-util — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 30 April 2023 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5870-1 Related CVEs: CVE-2022-25147 Upstream summary: Ronald Crane discovered that APR-util did not properly handled memory when encoding or decoding certain input data. An attacker could possibly use this issue […]

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Ubuntu 22.04 — openvswitch — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — openvswitch — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 30 April 2023 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6690-1 Related CVEs: CVE-2023-3966 CVE-2023-5366 CVE-2023-1668 CVE-2022-4337 CVE-2022-4338 Upstream summary: Timothy Redaelli and Haresh Khandelwal discovered that Open vSwitch incorrectly handled certain crafted Geneve packets when hardware offloading via the […]

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Windows Server 2022 — KB5022785 — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Windows Server 2022

Windows Server 2022 — KB5022785 — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Windows Server 2022 📖 ~4 min read  •  Source: Microsoft KB5022785 • MSRC update-guide entry Related CVEs: CVE-2023-21808 CVE-2023-21722 Affected components: Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2022 Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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SLES 12 — python-wheel — vulnerability — patch and remediation guide — diagnosis and fix on SLES 12

SLES 12 — python-wheel — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 30 April 2023 Affected versions: SLES 12 📖 ~4 min read  •  Source: SUSE advisory SUSE-CU-2023:158-1 (see also SUSE bugzilla) Related CVEs: CVE-2022-40898 Upstream summary: An issue discovered in Python Packaging Authority (PyPA) Wheel 0.37.1 and earlier allows remote attackers to cause a denial of service via […]

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SLES 12 — wpa_supplicant — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on SLES 12

SLES 12 — wpa_supplicant — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 30 April 2023 Affected versions: SLES 12 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2022:0716-1 (see also SUSE bugzilla) Related CVEs: CVE-2022-23304 CVE-2019-9494 CVE-2019-9498 CVE-2021-0326 CVE-2021-27803 CVE-2022-23303 CVE-2019-9499 CVE-2023-52160  +12 more Upstream summary: The implementations of EAP-pwd in hostapd before 2.10 and wpa_supplicant before 2.10 are […]

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Windows Server 2022 — KB5022733 — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Windows Server 2022

Windows Server 2022 — KB5022733 — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Windows Server 2022 📖 ~4 min read  •  Source: Microsoft KB5022733 • MSRC update-guide entry Related CVEs: CVE-2023-21808 CVE-2023-21722 Affected components: Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2022 Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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How to Harden SSH on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Harden SSH on RHEL 9

SSH is the primary remote access method for Linux servers, making it a common target for brute-force attacks, credential stuffing, and exploitation attempts. On RHEL 9, the default OpenSSH configuration works out of the box but leaves several attack vectors open. Hardening your SSH server configuration significantly reduces the risk of unauthorized access and is […]

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