Bug 1981533 (CVE-2021-33037)

Summary:	CVE-2021-33037 tomcat: HTTP request smuggling when used with a reverse proxy
Product:	[Other] Security Response	Reporter:	Guilherme de Almeida Suckevicz <gsuckevi>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	aileenc, akoufoud, alazarot, alee, anstephe, asoldano, atangrin, avibelli, bbaranow, bgeorges, bmaxwell, brian.stansberry, cdewolf, chazlett, cmoulliard, coolsvap, csutherl, darran.lofthouse, dbecker, dkreling, dosoudil, drieden, eleandro, etirelli, fjuma, ggaughan, gmalinko, gzaronik, huwang, ibek, ikanello, ivan.afonichev, iweiss, janstey, java-sig-commits, jclere, jjoyce, jochrist, jolee, jpallich, jperkins, jrokos, jschatte, jschluet, jstastny, jwon, krathod, krzysztof.daniel, kverlaen, kwills, kyoshida, lgao, lhh, lpeer, lthon, mburns, mkolesni, mnovotny, msochure, msvehla, mszynkie, nwallace, peholase, pgallagh, pjindal, pmackay, rguimara, rhcs-maint, rrajasek, rruss, rstancel, rsvoboda, sclewis, scohen, slinaber, smaestri, szappis, tcrider, tom.jenkinson, tzimanyi, yborgess, yozone
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	tomcat 10.0.7, tomcat 9.0.48, tomcat 8.5.68	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2022-01-07 19:11:23 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1981534
Bug Blocks:	1981546

Description Guilherme de Almeida Suckevicz 2021-07-12 18:34:08 UTC

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.

Reference:
https://lists.apache.org/thread.html/r612a79269b0d5e5780c62dfd34286a8037232fec0bc6f1a7e60c9381%40%3Cannounce.tomcat.apache.org%3E

Comment 1 Guilherme de Almeida Suckevicz 2021-07-12 18:34:38 UTC

Created tomcat tracking bugs for this issue:

Affects: fedora-all [bug 1981534]

Comment 8 errata-xmlrpc 2021-11-30 14:25:43 UTC

This issue has been addressed in the following products:

  Red Hat JBoss Web Server

Via RHSA-2021:4863 https://access.redhat.com/errata/RHSA-2021:4863

Comment 9 errata-xmlrpc 2021-11-30 14:25:57 UTC

This issue has been addressed in the following products:

  Red Hat JBoss Web Server 5.6 on RHEL 7
  Red Hat JBoss Web Server 5.6 on RHEL 8

Via RHSA-2021:4861 https://access.redhat.com/errata/RHSA-2021:4861

Comment 13 Product Security DevOps Team 2022-01-07 19:11:18 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2021-33037

Comment 14 errata-xmlrpc 2022-04-12 19:06:42 UTC

This issue has been addressed in the following products:

  Red Hat Support for Spring Boot 2.5.10

Via RHSA-2022:1179 https://access.redhat.com/errata/RHSA-2022:1179

Comment 15 errata-xmlrpc 2022-07-07 14:20:42 UTC

This issue has been addressed in the following products:

  Red Hat Fuse 7.11

Via RHSA-2022:5532 https://access.redhat.com/errata/RHSA-2022:5532