Containers/aardvark-dns: tcp query handling flaw in aardvark-dns leading to denial of service

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Summary

CVECVE-2024-8418
StatePUBLISHED
Assignerredhat
Source PriorityCVE Program / NVD first with legacy fallback
Published2024-09-04 15:15:15 UTC
Updated2026-06-30 00:16:49 UTC
DescriptionA 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.

Risk And Classification

Primary CVSS: v3.1 7.5 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS: 0.007590000 probability, percentile 0.506710000 (date 2026-07-01)

Problem Types: CWE-400 | NVD-CWE-noinfo | CWE-400 Uncontrolled Resource Consumption

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.1[email protected]Secondary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.1CNACVSS7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Containers Aardvark-dns 1.12.0 All All All
Application Containers Aardvark-dns 1.12.1 All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Red Hat Red Hat Enterprise Linux 9 unaffected 2:1.14.0-1.el9 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 10 Not specified Not specified
CNA Red Hat Red Hat Enterprise Linux 8 Not specified Not specified
CNA Red Hat Red Hat Enterprise Linux 8 Not specified Not specified
CNA Red Hat Red Hat Enterprise Linux 9 Not specified Not specified
CNA Red Hat Red Hat OpenShift Container Platform 4 Not specified Not specified

References

ReferenceSourceLinkTags
github.com/containers/aardvark-dns/pull/503 [email protected] github.com Issue Tracking
github.com/containers/aardvark-dns/issues/500 [email protected] github.com Exploit, Issue Tracking
bugzilla.redhat.com/show_bug.cgi [email protected] bugzilla.redhat.com Issue Tracking
access.redhat.com/errata/RHSA-2025:7094 [email protected] access.redhat.com
access.redhat.com/security/cve/CVE-2024-8418 [email protected] access.redhat.com Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Additional Advisory Data

SourceTimeEvent
CNA2024-09-03T00:00:00.000ZReported to Red Hat.
CNA2024-09-04T10:00:00.000ZMade public.

Workarounds

CNA: It is advised to upgrade aardvark-dns to version 1.12.1 or higher.

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