Security Hardening

Debian 11 — lasso — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — lasso — multiple vulnerabilities (7 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 11 February 2025 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2009-0050 CVE-2015-1783 CVE-2021-28091 CVE-2025-46404 CVE-2025-46705 CVE-2025-46784 CVE-2025-47151 Upstream summary: Lasso 2.2.1 and earlier does not properly check the return value from the OpenSSL DSA_verify function, which allows remote […]

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FreeBSD 14 — xrdb — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 14

FreeBSD 14 — xrdb — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 11 February 2025 Affected versions: FreeBSD 14 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: xrdb — root hole via rogue hostname Related CVEs: CVE-2011-0465 Upstream summary: Matthias Hopf reports: By crafting hostnames with shell escape characters, arbitrary commands can be executed in a root […]

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Debian 12 — iperf3 — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — iperf3 — multiple vulnerabilities (7 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 11 February 2025 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2016-4303 CVE-2023-38403 CVE-2023-7250 CVE-2024-26306 CVE-2024-53580 CVE-2025-54349 CVE-2025-54350 Upstream summary: The parse_string function in cjson.c in the cJSON library mishandles UTF8/16 strings, which allows remote attackers to cause a […]

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Windows Server 2022 — KB5049993 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Windows Server 2022

Windows Server 2022 — KB5049993 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Windows Server 2022 📖 ~4 min read  •  Source: Microsoft KB5049993 • MSRC update-guide entry Related CVEs: CVE-2025-21294 CVE-2025-21295 CVE-2025-21296 CVE-2025-21297 CVE-2025-21298 CVE-2025-21309 CVE-2025-21307 CVE-2024-49120  +12 more Affected components: Windows Server 2022 Windows Server 2022, 23H2 Edition (Server Core installation) Microsoft .NET […]

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Ubuntu 24.04 — linux-azure-nvidia-6.14 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 24.04

Ubuntu 24.04 — linux-azure-nvidia-6.14 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 11 February 2025 Affected versions: Ubuntu 24.04 (noble) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7834-1 Related CVEs: CVE-2024-36350 CVE-2024-36357 CVE-2025-38084 CVE-2025-38085 CVE-2025-38086 CVE-2025-38087 CVE-2025-38089 CVE-2025-38090  +12 more Upstream summary: Oleksii Oleksenko, Cedric Fournet, Jana Hofmann, Boris Köpf, Stavros Volos, and Flavien Solt discovered that […]

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Alpine Linux 3.20 — snmptt — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux 3.20

Alpine Linux 3.20 — snmptt — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux 3.20 / fixed in 1.4.2-r0 📖 ~4 min read  •  Source: Alpine secdb entry — snmptt 1.4.2-r0 Related CVEs: CVE-2020-24361 Upstream summary: Alpine main repository for vv3.20 ships snmptt 1.4.2-r0 which addresses CVE-2020-24361. Table of contents Symptom & Impact Environment […]

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Ubuntu 16.04 — htmldoc — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — htmldoc — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 11 February 2025 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7225-1 Related CVEs: CVE-2022-0137 CVE-2022-0534 CVE-2022-24191 CVE-2022-27114 CVE-2022-28085 CVE-2022-34033 CVE-2022-34035 CVE-2024-45508  +12 more Upstream summary: It was discovered that HTMLDOC incorrectly handled memory in the image_set_mask, git_read_lzw, write_header and write_node […]

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Windows Server 2019 — KB5044089 — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Windows Server 2019

Windows Server 2019 — KB5044089 — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Windows Server 2019 📖 ~4 min read  •  Source: Microsoft KB5044089 • MSRC update-guide entry Related CVEs: CVE-2024-43483 CVE-2024-43484 Affected components: Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019 Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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Ubuntu 16.04 — containerd — multiple vulnerabilities (12 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — containerd — multiple vulnerabilities (12 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 11 February 2025 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7983-1 Related CVEs: CVE-2025-64329 CVE-2024-25621 CVE-2024-40635 CVE-2023-25153 CVE-2023-25173 CVE-2021-32760 CVE-2021-41103 CVE-2022-23648  +4 more Upstream summary: David Leadbeater discovered that containerd incorrectly set certain directory path permissions. An attacker could possibly […]

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Oracle Linux 8 — postgresql:16 — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — postgresql:16 — vulnerability — patch and remediation guide (ELSA-2026-0519)

🟡 Medium   ⏱ 10–30 min  Last verified: 11 February 2025 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2026-0519 Related CVEs: CVE-2025-12817 CVE-2025-12818 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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