Security Bulletin
Summary
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.
Vulnerability Details
CVEID: CVE-2020-13935
DESCRIPTION: Apache Tomcat is vulnerable to a denial of service, caused by improper validation of the payload length in a WebSocket frame. By sending multiple requests with invalid payload lengths, a remote attacker could exploit this vulnerability to cause the application to enter into an infinite loop.
CVSS Base score: 5.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/185227 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
Affected Products and Versions
| Affected Product(s) | Version(s) |
| UCD - IBM UrbanCode Deploy | 6.2.7.4 |
| UCD - IBM UrbanCode Deploy | 6.2.7.3 |
| UCD - IBM UrbanCode Deploy | 7.0.4.0 |
| UCD - IBM UrbanCode Deploy | 7.0.3.0 |
| UCD - IBM UrbanCode Deploy | All |
Remediation/Fixes
Upgrade to 6.1.7.9, 7.0.5.4, 7.1.1.0 or later.
Workarounds and Mitigations
None
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References
Change History
25 Sep 2020: Initial Publication
*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.
Disclaimer
Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.
Document Location
Worldwide
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Document Information
Modified date:
05 November 2020
UID
ibm16337609