Vulnerabilities
Misconfiguration
Compliance
CVE Vulnerabilities

CVE-2018-18898

Uncontrolled Resource Consumption

Published: Mar 21, 2019 | Modified: Nov 21, 2024
CVSS 3.x
7.5
HIGH
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.x
5 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P
RedHat/V2
RedHat/V3
Ubuntu
MEDIUM
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2018-18898
CWEhttps://cwe.mitre.org/data/definitions/400.html

The email-ingestion feature in Best Practical Request Tracker 4.1.13 through 4.4 allows denial of service by remote attackers via an algorithmic complexity attack on email address parsing.

Weakness

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

Affected Software

NameVendorStart VersionEnd Version
Request_trackerBestpractical4.1.13 (including)4.4.0 (including)
Libemail-address-list-perlUbuntubionic*
Libemail-address-list-perlUbuntucosmic*
Libemail-address-list-perlUbuntudevel*
Libemail-address-list-perlUbuntudisco*
Libemail-address-list-perlUbuntueoan*
Libemail-address-list-perlUbuntuesm-apps/bionic*
Libemail-address-list-perlUbuntuesm-apps/focal*
Libemail-address-list-perlUbuntuesm-apps/xenial*
Libemail-address-list-perlUbuntufocal*
Libemail-address-list-perlUbuntutrusty*
Libemail-address-list-perlUbuntuupstream*
Libemail-address-list-perlUbuntuxenial*

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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