DNS

NetBSD 10.0 — adns — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on NetBSD 10.0

NetBSD 10.0 — adns — multiple vulnerabilities (7 CVEs) — patch and remediation guide

  • September 21, 2024
  • BSD
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: NetBSD 10.0 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Related CVEs: CVE-2017-9103 CVE-2017-9105 CVE-2017-9106 CVE-2017-9107 CVE-2017-9108 CVE-2017-9109 CVE-2017-9104 Upstream summary: pkgsrc audit-packages flagged adns<1.5.2 for vulnerability class 'buffer-overflow'. Reference: https://nvd.nist.gov/vuln/detail/CVE-2017-9103 Table of contents Symptom & Impact Environment & Reproduction Root […]

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NetBSD 10.0 — ldns — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on NetBSD 10.0

NetBSD 10.0 — ldns — multiple vulnerabilities (7 CVEs) — patch and remediation guide

  • September 19, 2024
  • BSD
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🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: NetBSD 10.0 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Related CVEs: CVE-2009-1086 CVE-2011-3581 CVE-2017-1000231 CVE-2017-1000232 CVE-2014-3209 CVE-2020-19860 CVE-2020-19861 Upstream summary: pkgsrc audit-packages flagged ldns<1.5.1 for vulnerability class 'arbitrary-code-execution'. Reference: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1086 Table of contents Symptom & Impact Environment & Reproduction Root […]

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Common Problems 114469

Podman Image Pull TLS Errors On RHEL 9

🟡 Medium   ⏱ 5–30 min  Last verified: 17 September 2024 📖 ~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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How to Secure Nginx with Let's Encrypt SSL on Ubuntu 24.04 — step-by-step Linux tutorial on Progressive Robot

How to Secure Apache with Let’s Encrypt SSL on Ubuntu 24.04

  • September 16, 2024
  • Linux
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This guide secures an Apache virtual host on Ubuntu 24.04 LTS with a free Let’s Encrypt SSL certificate using Certbot. Tested and valid on: Ubuntu 24.04 LTS Prerequisites Ubuntu 24.04 LTS server Apache installed with a virtual host configured Domain DNS A record pointing to your server Port 80 and 443 open in UFW Step […]

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Common Problems 114463

RHEL 9 kernel update completed but old kernel still boots

  • September 14, 2024
  • Linux
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🟡 Medium   ⏱ 5–30 min  Last verified: 14 September 2024 📖 ~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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Alpine Linux 3.19 — knot-resolver — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux 3.19

Alpine Linux 3.19 — knot-resolver — multiple vulnerabilities (8 CVEs) — patch and remediation guide

  • September 13, 2024
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Alpine Linux 3.19 / fixed in 5.7.1-r0 📖 ~4 min read  •  Source: Alpine secdb entry — knot-resolver 5.7.1-r0 Related CVEs: CVE-2023-50387 CVE-2023-50868 CVE-2022-40188 CVE-2020-12667 CVE-2019-19331 CVE-2019-10190 CVE-2019-10191 CVE-2018-1110 Upstream summary: Alpine community repository for vv3.19 ships knot-resolver 5.7.1-r0 which addresses CVE-2023-50387. […]

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How to Configure syslog-ng for Centralised Syslog on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Configure syslog-ng for Centralised Syslog on RHEL 9

  • September 11, 2024
  • Linux
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syslog-ng is a high-performance, flexible syslog daemon that can act as a centralised log server, receiving log messages from dozens of remote hosts, filtering them, and writing them to organised file hierarchies or forwarding them to external storage systems. Unlike the default rsyslog that ships with RHEL 9, syslog-ng offers a powerful pattern-based configuration language […]

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

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

  • September 9, 2024
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 9 September 2024 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2009-1086 CVE-2011-3581 CVE-2014-3209 CVE-2017-1000231 CVE-2017-1000232 CVE-2020-19860 CVE-2020-19861 Upstream summary: Heap-based buffer overflow in the ldns_rr_new_frm_str_internal function in ldns 1.4.x allows remote attackers to cause a denial of service […]

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Common Problems 124627

Oracle Linux 9 – Common Problem 017 – Diagnosis and Fix

  • September 8, 2024
  • Linux
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🟢 Low   ⏱ 5–30 min  Last verified: 8 September 2024 Affected versions: Oracle Linux 9 📖 ~2 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 120096

Debian 12 High I/O Wait Caused by Swap Thrashing

  • September 8, 2024
  • Linux
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🟠 High   ⏱ 5–30 min  Last verified: 8 September 2024 Affected versions: Debian 12 📖 ~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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