Vulnerabilities
Misconfiguration
Compliance
CVE Vulnerabilities

CVE-2021-28165

Uncontrolled Resource Consumption

Published: Apr 01, 2021 | Modified: Aug 27, 2025
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
7.8 HIGH
AV:N/AC:L/Au:N/C:N/I:N/A:C
RedHat/V2
RedHat/V3
7.5 MODERATE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Ubuntu
MEDIUM
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2021-28165
CWEhttps://cwe.mitre.org/data/definitions/400.html

In Eclipse Jetty 7.2.2 to 9.4.38, 10.0.0.alpha0 to 10.0.1, and 11.0.0.alpha0 to 11.0.1, CPU usage can reach 100% upon receiving a large invalid TLS frame.

Weakness

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

Affected Software

NameVendorStart VersionEnd Version
JettyEclipse7.2.2 (including)9.4.39 (excluding)
JettyEclipse10.0.0 (including)10.0.2 (excluding)
JettyEclipse11.0.0 (including)11.0.2 (excluding)
Red Hat AMQ 7.8.2RedHatjetty-server*
Red Hat AMQ 7.9.0RedHat*
Red Hat AMQ Streams 1.6.4RedHat*
Red Hat AMQ Streams 1.8.0RedHatjetty-server*
Red Hat Developer ToolsRedHatrh-eclipse-jetty-0:9.4.40-1.1.el7_9*
Red Hat Fuse 7.9RedHatjetty*
Red Hat Integration Camel Quarkus 2RedHat*
Red Hat OpenShift Container Platform 4.7RedHatjenkins-0:2.277.3.1620393611-1.el8*
Red Hat OpenShift Container Platform 4.7RedHatrunc-0:1.0.0-95.rhaos4.8.gitcd80260.el7*
RHAF Camel-K 1.8RedHatjetty*
Equinox-bundlesUbuntubionic*
Equinox-bundlesUbuntufocal*
Equinox-bundlesUbuntugroovy*
Equinox-bundlesUbuntuhirsute*
Equinox-bundlesUbuntuimpish*
Equinox-bundlesUbuntukinetic*
Equinox-bundlesUbuntulunar*
Equinox-bundlesUbuntutrusty*

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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