CVE-2021-33037 (GCVE-0-2021-33037)
Vulnerability from cvelistv5
Published
2021-07-12 14:55
Modified
2026-10-08 21:13
Severity ?
CWE
  • CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')
Summary
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.
References
https://lists.apache.org/thread.html/r612a79269b0d5e5780c62dfd34286a8037232fec0bc6f1a7e60c9381%40%3Cannounce.tomcat.apache.org%3E x_refsource_MISC
https://www.oracle.com//security-alerts/cpujul2021.html x_refsource_MISC
https://lists.apache.org/thread.html/r40f921575aee8d7d34e53182f862c45cbb8f3d898c9d4e865c2ec262%40%3Ccommits.tomee.apache.org%3E mailing-list, x_refsource_MLIST
https://lists.apache.org/thread.html/re01e7e93154e8bdf78a11a23f9686427bd3d51fc6e12c508645567b7%40%3Ccommits.tomee.apache.org%3E mailing-list, x_refsource_MLIST
https://lists.debian.org/debian-lts-announce/2021/08/msg00009.html mailing-list, x_refsource_MLIST
https://www.debian.org/security/2021/dsa-4952 vendor-advisory, x_refsource_DEBIAN
https://lists.apache.org/thread.html/rd0dfea39829bc0606c936a16f6fca338127c86c0a1083970b45ac8d2%40%3Ccommits.tomee.apache.org%3E mailing-list, x_refsource_MLIST
https://lists.apache.org/thread.html/r290aee55b72811fd19e75ac80f6143716c079170c5671b96932ed44b%40%3Ccommits.tomee.apache.org%3E mailing-list, x_refsource_MLIST
https://lists.apache.org/thread.html/rf1b54fd3f52f998ca4829159a88cc4c23d6cef5c6447d00948e75c97%40%3Ccommits.tomee.apache.org%3E mailing-list, x_refsource_MLIST
https://lists.apache.org/thread.html/rc6ef52453bb996a98cb45442871a1db56b7c349939e45d829bf9ae37%40%3Ccommits.tomee.apache.org%3E mailing-list, x_refsource_MLIST
https://www.oracle.com/security-alerts/cpuoct2021.html x_refsource_MISC
https://security.netapp.com/advisory/ntap-20210827-0007/ x_refsource_CONFIRM
https://kc.mcafee.com/corporate/index?page=content&id=SB10366 x_refsource_CONFIRM
https://www.oracle.com/security-alerts/cpujan2022.html x_refsource_MISC
https://www.oracle.com/security-alerts/cpuapr2022.html x_refsource_MISC
https://security.gentoo.org/glsa/202208-34 vendor-advisory, x_refsource_GENTOO
Impacted products
Vendor Product Version
Apache Software Foundation Apache Tomcat Version: Apache Tomcat 10 10.0.0-M1 to 10.0.6
Version: Apache Tomcat 9 9.0.0.M1 to 9.0.46
Version: Apache Tomcat 8 8.5.0 to 8.5.66
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