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OpenAdvisories
High USN-3723-1 2 CVEs

tomcat7, tomcat8 vulnerabilities

Published Jul 25, 2018 · Updated Apr 27, 2026

Summary

It was discovered that Tomcat incorrectly handled decoding certain
UTF-8 strings. A remote attacker could possibly use this issue to cause
Tomcat to crash, resulting in a denial of service. (CVE-2018-1336)

It was discovered that the Tomcat WebSocket client incorrectly performed
hostname verification. A remote attacker could possibly use this issue to
intercept sensitive information. (CVE-2018-8034)

Fixed packages 2

ReleasePackageFixed in
Ubuntu · 14.04 LTS 14.04:LTS tomcat7 7.0.52-1ubuntu0.15
Ubuntu · 16.04 LTS 16.04:LTS tomcat8 8.0.32-1ubuntu1.7

Vulnerabilities 2

  • High 7.5
    CVE-2018-1336 EPSS 20%

    In Apache Tomcat there is an improper handing of overflow in the UTF-8 decoder

    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…

  • High 7.5
    CVE-2018-8034 EPSS 21%

    The host name verification missing in Apache Tomcat

    The host name verification when using TLS with the WebSocket client was missing. It is now enabled by default. Versions Affected: Apache Tomcat 9.0.0.M1 to 9.0.9, 8.5.0 to 8.5.31, 8.0.0.RC1 to 8.0.52, and 7.0.35 to 7.0.88.

References

  • report
    https://ubuntu.com/security/CVE-2018-1336
  • report
    https://ubuntu.com/security/CVE-2018-8034