Bug 1887648 (CVE-2020-13943)

Summary: CVE-2020-13943 tomcat: Apache Tomcat HTTP/2 Request mix-up
Product: [Other] Security Response Reporter: Ted Jongseok Won <jwon>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: aboyko, aileenc, akoufoud, alazarot, alee, almorale, anstephe, asoldano, atangrin, avibelli, bbaranow, bgeorges, bmaxwell, brian.stansberry, cdewolf, chazlett, cmoulliard, coolsvap, csutherl, darran.lofthouse, dbecker, dkreling, dosoudil, drieden, eleandro, etirelli, ggaughan, gmalinko, gzaronik, hhorak, huwang, ibek, ikanello, ivan.afonichev, iweiss, janstey, java-sig-commits, jawilson, jbalunas, jclere, jjoyce, jochrist, jolee, jorton, jpallich, jperkins, jschatte, jschluet, jstastny, jwon, krathod, krzysztof.daniel, kverlaen, kwills, lgao, lhh, lpeer, lthon, mbabacek, mburns, mizdebsk, mkolesni, mnovotny, msochure, msvehla, mszynkie, myarboro, nwallace, pgallagh, pjindal, pmackay, rguimara, rhcs-maint, rrajasek, rruss, rstancel, rsvoboda, rsynek, sclewis, scohen, sdaley, slinaber, smaestri, tom.jenkinson, vondruch, weli
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: tomcat 10.0.0-M8, tomcat 9.0.38, tomcat 8.5.58 Doc Type: ---
Doc Text:
A flaw was found in Apache Tomcat. If an HTTP/2 client exceeded the agreed maximum number of concurrent streams for a connection (in violation of the HTTP/2 protocol), it is possible that a subsequent request made on that connection could contain HTTP headers - including HTTP/2 pseudo headers - from a previous request rather than the intended headers. This could lead to users seeing responses for unexpected resources. The highest threat from this vulnerability is to data confidentiality.
Story Points: ---
Clone Of: Environment:
Last Closed: 2021-02-11 16:09:50 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: 1889329    
Bug Blocks: 1887641    

Description Ted Jongseok Won 2020-10-13 05:02:15 UTC
If an HTTP/2 client exceeded the agreed maximum number of concurrent streams for a connection (in violation of the HTTP/2 protocol), it was possible that a subsequent request made on that connection could contain HTTP headers - including HTTP/2 pseudo headers - from a previous request rather than the intended headers. This could lead to users seeing responses for unexpected resources.

Upstream commits:
Tomcat 10.0: https://github.com/apache/tomcat/commit/1bbc650cbc3f08d85a1ec6d803c47ae53a84f3bb
Tomcat 9.0: https://github.com/apache/tomcat/commit/55911430df13f8c9998fbdee1f9716994d2db59b
Tomcat 8.5: https://github.com/apache/tomcat/commit/9d7def063b47407a09a2f9202beed99f4dcb292a

Reference:
http://mail-archives.apache.org/mod_mbox/tomcat-announce/202010.mbox/%3C2b767c6e-dcb9-5816-bd69-a3bc0771fef3%40apache.org%3E

Comment 3 Ted Jongseok Won 2020-10-13 05:44:28 UTC
This vulnerability is out of security support scope for the following products:
 * Red Hat JBoss Enterprise Application Platform 6
 * Red Hat JBoss Data Grid 6
 * Red Hat JBoss Fuse 6
 * Red Hat JBoss Data Virtualization 6

Please refer to https://access.redhat.com/support/policy/updates/jboss_notes for more details.

Comment 11 errata-xmlrpc 2021-02-11 13:50:18 UTC
This issue has been addressed in the following products:

  Red Hat JBoss Web Server 5.4 on RHEL 7
  Red Hat JBoss Web Server 5.4 on RHEL 8

Via RHSA-2021:0494 https://access.redhat.com/errata/RHSA-2021:0494

Comment 12 errata-xmlrpc 2021-02-11 13:51:43 UTC
This issue has been addressed in the following products:

  Red Hat JBoss Web Server

Via RHSA-2021:0495 https://access.redhat.com/errata/RHSA-2021:0495

Comment 13 Product Security DevOps Team 2021-02-11 16:09:50 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-2020-13943

Comment 14 errata-xmlrpc 2021-10-28 07:52:27 UTC
This issue has been addressed in the following products:

  Red Hat Support for Spring Boot 2.4.9

Via RHSA-2021:4012 https://access.redhat.com/errata/RHSA-2021:4012

Comment 15 errata-xmlrpc 2021-12-14 21:32:53 UTC
This issue has been addressed in the following products:

  Red Hat Fuse 7.10

Via RHSA-2021:5134 https://access.redhat.com/errata/RHSA-2021:5134