DNS

Ubuntu 20.04 — pdns-recursor — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — pdns-recursor — multiple vulnerabilities (6 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7203-1 Related CVEs: CVE-2018-1046 CVE-2018-10851 CVE-2018-14626 CVE-2018-14644 CVE-2020-17482 CVE-2022-27227 Upstream summary: Wei Hao discovered that PowerDNS Authoritative Server incorrectly handled memory when accessing certain files. An attacker could possibly use […]

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Ubuntu 18.04 — maradns — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — maradns — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6271-1 Related CVEs: CVE-2022-30256 CVE-2023-31137 Upstream summary: Xiang Li discovered that MaraDNS incorrectly handled certain inputs. If a user or an automated system were tricked into opening a specially crafted […]

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Ubuntu 24.04 — smartdns — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 24.04

Ubuntu 24.04 — smartdns — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Ubuntu 24.04 (noble) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7370-1 Related CVEs: CVE-2024-24198 CVE-2024-24199 CVE-2024-42643 Upstream summary: It was discovered that SmartDNS did not correctly align certain objects in memory, leading to undefined behaviour. An attacker could possibly use […]

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Ubuntu 16.04 — pdns — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — pdns — multiple vulnerabilities (6 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7203-1 Related CVEs: CVE-2018-1046 CVE-2018-10851 CVE-2018-14626 CVE-2018-14644 CVE-2020-17482 CVE-2022-27227 Upstream summary: Wei Hao discovered that PowerDNS Authoritative Server incorrectly handled memory when accessing certain files. An attacker could possibly use […]

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Ubuntu 16.04 — pdns-recursor — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — pdns-recursor — multiple vulnerabilities (6 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7203-1 Related CVEs: CVE-2018-1046 CVE-2018-10851 CVE-2018-14626 CVE-2018-14644 CVE-2020-17482 CVE-2022-27227 Upstream summary: Wei Hao discovered that PowerDNS Authoritative Server incorrectly handled memory when accessing certain files. An attacker could possibly use […]

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Ubuntu 20.04 — unbound — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — unbound — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7080-1 Related CVEs: CVE-2024-8508 CVE-2024-43167 CVE-2024-43168 CVE-2024-33655 CVE-2023-50387 CVE-2023-50868 CVE-2022-3204 CVE-2022-30698  +12 more Upstream summary: Toshifumi Sakaguchi discovered that Unbound incorrectly handled name compression for large RRsets, which could lead […]

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Ubuntu 16.04 — bind9 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — bind9 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6909-3 Related CVEs: CVE-2024-1737 CVE-2024-1975 CVE-2023-50387 CVE-2023-50868 CVE-2023-3341 CVE-2023-2828 CVE-2016-2775 CVE-2016-6170  +12 more Upstream summary: USN-6909-1 fixed vulnerabilities in Bind. This update provides the corresponding updates for Ubuntu 16.04 LTS. […]

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Ubuntu 22.04 — smartdns — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — smartdns — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7370-1 Related CVEs: CVE-2024-24198 CVE-2024-24199 CVE-2024-42643 Upstream summary: It was discovered that SmartDNS did not correctly align certain objects in memory, leading to undefined behaviour. An attacker could possibly use […]

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Ubuntu 18.04 — ldns — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — ldns — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5257-1 Related CVEs: CVE-2020-19860 CVE-2020-19861 Upstream summary: It was discovered that ldns incorrectly handled certain inputs. An attacker could possibly use this issue to expose sensitive information. (CVE-2020-19860, CVE-2020-19861) Table […]

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Ubuntu 16.04 — unbound — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — unbound — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7080-1 Related CVEs: CVE-2024-8508 CVE-2024-43167 CVE-2024-43168 CVE-2017-15105 Upstream summary: Toshifumi Sakaguchi discovered that Unbound incorrectly handled name compression for large RRsets, which could lead to excessive CPU usage. An attacker […]

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