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Apache Tomcat: Important: Request Smuggling (CVE-2021-33037)

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Apache Tomcat: Important: Request Smuggling (CVE-2021-33037)

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:P/A:N)
Published
07/13/2021
Created
07/14/2021
Added
07/13/2021
Modified
08/20/2021

Description

Apache Tomcat 10.0.0-M1 to 10.0.6, 9.0.0.M1 to 9.0.46 and 8.5.0 to 8.5.66 did not correctly parse the HTTP transfer-encoding request header in some circumstances leading to the possibility to request smuggling when used with a reverse proxy. Specifically: - Tomcat incorrectly ignored the transfer encoding header if the client declared it would only accept an HTTP/1.0 response; - Tomcat honoured the identify encoding; and - Tomcat did not ensure that, if present, the chunked encoding was the final encoding.

Solution(s)

  • apache-tomcat-upgrade-10_0_7
  • apache-tomcat-upgrade-8_5_68
  • apache-tomcat-upgrade-9_0_48

References

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