High [CVE-2024-8418] Containers/aardvark-dns: tcp query handling flaw in aardvark-dns leading to denial of service
This high-severity Red Hat Linux advisory covers CVE-2024-8418 affecting Red Hat Enterprise Linux 9, Red Hat package: aardvark-dns.
Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.
VulniPulse record published
Summary
A flaw was found in Aardvark-dns, which is vulnerable to a Denial of Service attack due to the serial processing of TCP DNS queries. An attacker can exploit this flaw by keeping a TCP connection open indefinitely, causing the server to become unresponsive and resulting in other DNS queries timing out.
This issue prevents legitimate users from accessing DNS services, thereby disrupting normal operations and causing service downtime. This vulnerability is classified as moderate severity because it affects the availability of the service rather than compromising data confidentiality or integrity.
The CVSS score reflects its impact on system availability, as the DoS attack can lead to significant downtime and service disruption but does not involve unauthorized data access or code execution. Red Hat severity: Moderate — CVSS 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
Weakness: CWE-400. Affected Red Hat products: Red Hat Enterprise Linux 9.
Red Hat fixing advisory: RHSA-2025:7094.
Affected products named by the advisory: Red Hat package: aardvark-dns.
Is CVE-2024-8418 exploited?
No exploitation is reported in the sources VulniPulse tracks: CVE-2024-8418 is not in the CISA KEV catalog (checked ) and this advisory does not report exploitation. That is not proof the vulnerability cannot be exploited.
How do I fix CVE-2024-8418?
Upgrade to a fixed release named by Red Hat:
- aardvark-dns-2:1.14.0-1.el9
- RHSA-2025:7094
Confirm against the vendor advisory before you patch.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative. Check it before change work.
Official advisory · high-confidence parse· fetched 20 days ago·verify at source
- aardvark-dns-2:1.14.0-1.el9
- RHSA-2025:7094
Official advisory · high-confidence parse· fetched 20 days ago·verify at source
Mitigation checklist
- It is advised to upgrade aardvark-dns to version 1.12.1 or higher.
Official advisory · high-confidence parse· fetched 20 days ago·verify at source
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