HTTP Request Smuggling in Apache Tomcat
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.
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2021-33037US | medium5.3 | — | ||
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 pos… | ||||
references
External citations — patches, advisories, analysis.
- https://github.com/apache/tomcatPACKAGE
- https://github.com/apache/tomcat/commit/05f9e8b00f5d9251fcd3c95dcfd6cf84177f46c8WEB
- https://github.com/apache/tomcat/commit/19d11556d0db99df291df33605f137976d152475WEB
- https://github.com/apache/tomcat/commit/3202703e6d635e39b74262e81f0cb4bcbe2170dcWEB
- https://github.com/apache/tomcat/commit/45d70a86a901cbd534f8f570bed2aec9f7f7b88eWEB
- https://github.com/apache/tomcat/commit/506134f957a4be2c5b4a9334f7b3435fc954dbc1WEB
- https://github.com/apache/tomcat/commit/8874fa02e9b36baa9ca6b226c0882c0190ca5a02WEB
- https://github.com/apache/tomcat/commit/a2c3dc4c96168743ac0bab613709a5bbdaec41d0WEB
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