CVE Database›Document archive›CVE-2018-1336

CVE-2018-1336

tomcat: A bug in the UTF-8 decoder can lead to DoS

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Severity

Important

Red Hat Product Security

7.5

CVSS 3.0

Review impact separately from score.

Published · July 22, 2018

Updated · November 4, 2026

Description

An improper handing of overflow in the UTF-8 decoder with supplementary characters can lead to an infinite loop in the decoder causing a Denial of Service. Versions Affected: Apache Tomcat 9.0.0.M9 to 9.0.7, 8.5.0 to 8.5.30, 8.0.0.RC1 to 8.0.51, and 7.0.28 to 7.0.86.

Statement

Fuse 6.3 and 7 standalone distributions ship but do not use tomcat, and as such are not affected by this flaw; however, Fuse Integration Services 2.0 and Fuse 7 on OpenShift provide the affected artifacts via their respective maven repositories, and will provide fixes for this issue in a future release.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.0 · 7.5
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE not specified