Vulnerabilities
Misconfiguration
Compliance
CVE Vulnerabilities

CVE-2024-33655

Uncontrolled Resource Consumption

Published: Jun 06, 2024 | Modified: Nov 04, 2025
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
RedHat/V2
RedHat/V3
3.7 LOW
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Ubuntu
LOW
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2024-33655
CWEhttps://cwe.mitre.org/data/definitions/400.html

The DNS protocol in RFC 1035 and updates allows remote attackers to cause a denial of service (resource consumption) by arranging for DNS queries to be accumulated for seconds, such that responses are later sent in a pulsing burst (which can be considered traffic amplification in some cases), aka the DNSBomb issue.

Weakness

The product does not properly control the allocation and maintenance of a limited resource.

Affected Software

NameVendorStart VersionEnd Version
UnboundUbuntudevel*
UnboundUbuntuesm-infra/focal*
UnboundUbuntufocal*
UnboundUbuntujammy*
UnboundUbuntumantic*
UnboundUbuntunoble*
UnboundUbuntuoracular*
UnboundUbuntuplucky*
UnboundUbuntuquesting*
UnboundUbuntutrusty/esm*
UnboundUbuntuupstream*

Potential Mitigations

  • Mitigation of resource exhaustion attacks requires that the target system either:

  • The first of these solutions is an issue in itself though, since it may allow attackers to prevent the use of the system by a particular valid user. If the attacker impersonates the valid user, they may be able to prevent the user from accessing the server in question.

  • The second solution is simply difficult to effectively institute – and even when properly done, it does not provide a full solution. It simply makes the attack require more resources on the part of the attacker.

References

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