Package Management

Ubuntu 22.04 — jupyter-notebook — multiple vulnerabilities (9 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — jupyter-notebook — multiple vulnerabilities (9 CVEs) — patch and remediation guide

  • September 2, 2023
  • Linux
  • Comment off

🟡 Medium   ⏱ 10–30 min  Last verified: 2 September 2023 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7464-1 Related CVEs: CVE-2022-25887 CVE-2018-19351 CVE-2018-21030 CVE-2019-10255 CVE-2019-10856 CVE-2019-9644 CVE-2020-26215 CVE-2022-24758  +1 more Upstream summary: It was discovered that Jupyter Notebook did not properly parse HTML comments under certain circumstances. […]

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NetBSD 9.4 — librest — vulnerability — patch and remediation guide — diagnosis and fix on NetBSD 9.4

NetBSD 9.4 — librest — vulnerability — patch and remediation guide

  • September 2, 2023
  • BSD
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: NetBSD 9.4 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Related CVEs: CVE-2015-2675 Upstream summary: pkgsrc audit-packages flagged librest-[0-9]* for vulnerability class 'weak-authentication'. Reference: https://nvd.nist.gov/vuln/detail/CVE-2015-2675 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis […]

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How to Profile Application Performance with perf on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Profile Application Performance with perf on RHEL 9

  • September 2, 2023
  • Linux
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The perf tool is the Linux kernel’s built-in performance analysis framework, capable of sampling CPU events, tracing system calls, counting hardware performance counters, and generating flame graphs — all without any changes to the application under test. On RHEL 9, perf integrates tightly with the kernel’s BPF and tracepoint subsystems, making it one of the […]

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NetBSD 9.4 — gthumb — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on NetBSD 9.4

NetBSD 9.4 — gthumb — multiple vulnerabilities (2 CVEs) — patch and remediation guide

  • September 2, 2023
  • BSD
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: NetBSD 9.4 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Related CVEs: CVE-2018-18718 CVE-2019-20326 Upstream summary: pkgsrc audit-packages flagged gthumb-[0-9]* for vulnerability class 'double-free'. Reference: https://nvd.nist.gov/vuln/detail/CVE-2018-18718 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step […]

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Windows Server 2019 — KB5032342 — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Windows Server 2019

Windows Server 2019 — KB5032342 — 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 KB5032342 • MSRC update-guide entry Related CVEs: CVE-2023-36560 CVE-2023-36049 Affected components: Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019 Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019 Table […]

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

Ubuntu 22.04 — gnuchess — vulnerability — patch and remediation guide

  • September 2, 2023
  • Linux
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🟢 Low   ⏱ 5–15 min  Last verified: 2 September 2023 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7336-1 Related CVEs: CVE-2021-30184 Upstream summary: Michael Vaughan discovered an overflow vulnerability in GNU Chess that occurs when reading a specially crafted Portable Game Notation (PGN) file. An attacker could […]

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CentOS Stream 9 — lldpd — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on CentOS Stream 9

CentOS Stream 9 — lldpd — multiple vulnerabilities (3 CVEs) — patch and remediation guide

  • September 2, 2023
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 2 September 2023 Affected versions: CentOS Stream 9 📖 ~4 min read  •  Source: AlmaLinux/RHEL advisory ALSA-2024:9158 Related CVEs: CVE-2020-27827 CVE-2021-43612 CVE-2023-41910 Upstream summary: LLDP is an industry standard protocol designed to supplant proprietary Link-Layer protocols such as EDP or CDP. The goal of LLDP is to […]

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NetBSD 9.4 — firefox78 — vulnerability — patch and remediation guide — diagnosis and fix on NetBSD 9.4

NetBSD 9.4 — firefox78 — vulnerability — patch and remediation guide

  • September 2, 2023
  • BSD
  • Comment off

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: NetBSD 9.4 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Upstream summary: pkgsrc audit-packages flagged firefox78<78.1 for vulnerability class 'multiple-vulnerabilities'. Reference: https://www.mozilla.org/en-US/security/advisories/mfsa2020-32/ Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary […]

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How to Configure OpenDKIM with Postfix on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Configure OpenDKIM with Postfix on Debian 12

  • September 2, 2023
  • Linux
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Introduction This guide explains how to Configure OpenDKIM with Postfix on Debian 12 on Debian 12 Bookworm. Debian Bookworm uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian 12 install with the […]

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Windows Server 2016 — KB5028226 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Windows Server 2016

Windows Server 2016 — KB5028226 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Windows Server 2016 📖 ~4 min read  •  Source: Microsoft KB5028226 • MSRC update-guide entry Related CVEs: CVE-2023-35365 CVE-2023-35366 CVE-2023-35367 CVE-2023-32057 CVE-2023-35297 CVE-2023-33166 CVE-2023-33167 CVE-2023-33168  +12 more Affected components: Windows Server 2016 Windows Server 2016 (Server Core installation) Table of contents Symptom […]

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