UBUNTU-CVE-2020-13935

Advisory lineage Upstream: 1 Downstream: 2
Upstream
CVE-2020-13935
Published: 14 Jul 2020, 15:15
Last modified:04 Jun 2026, 12:45

Vulnerability Summary

Overall Risk (default)
medium
30/100
CVSS Score
7.5 HIGH
3.1 (osv_ubuntu)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

14 Jul 2020, 15:15
Published
Vulnerability first disclosed
04 Jun 2026, 12:45
Last Modified
Vulnerability information updated

Description

The payload length in a WebSocket frame was not correctly validated in Apache Tomcat 10.0.0-M1 to 10.0.0-M6, 9.0.0.M1 to 9.0.36, 8.5.0 to 8.5.56 and 7.0.27 to 7.0.104. Invalid payload lengths could trigger an infinite loop. Multiple requests with invalid payload lengths could lead to a denial of service.

CVSS Metrics

  • v3.1•HIGH•Score: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Systems

  • ubuntu•tomcat7

    all

  • ubuntu•tomcat8

    < 8.0.32-1ubuntu1.13 | all

  • ubuntu•tomcat9

    all | < 9.0.31-1ubuntu0.1

References (6)