CVE-2020-13935

HIGH severity · CVSS 7.5 · CWE-835

7.5CVSS HIGH

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.

Impact & exploitability

Attack vectorNetwork

Attack complexityLow

Privileges requiredNone

User interactionNone

Confidentiality impactNone

Integrity impactNone

Availability impactHigh

Exploit probability (EPSS)92%

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products we track (1)

Apache Tomcat

Recommendation

Apply the vendor fix promptly. Open any affected product above for its exact safe version.

Additional information

NVD record
https://lists.apache.org/thread.html/rd48c72bd3255bda87564d4da3791517c074d94f8a701f93b85752651%40%3Cannounce.tomcat.apache.org%3EAdvisory
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00084.htmlAdvisory
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00088.htmlAdvisory
https://kc.mcafee.com/corporate/index?page=content&id=SB10332Advisory
https://lists.apache.org/thread.html/r4e5d3c09f4dd2923191e972408b40fb8b42dbff0bc7904d44b651e50%40%3Cusers.tomcat.apache.org%3E
https://lists.debian.org/debian-lts-announce/2020/07/msg00017.htmlAdvisory
https://security.netapp.com/advisory/ntap-20200724-0003/Advisory
https://usn.ubuntu.com/4448-1/Advisory