Bug 1966743 (CVE-2021-30641)

Summary:	CVE-2021-30641 httpd: Unexpected URL matching with 'MergeSlashes OFF'
Product:	[Other] Security Response	Reporter:	Pedro Sampaio <psampaio>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	aboyko, anon.amish, asoldano, atangrin, bbaranow, bmaxwell, bnater, brian.stansberry, caswilli, cdewolf, chazlett, csutherl, darran.lofthouse, dkreling, dosoudil, eleandro, fjuma, gzaronik, hhorak, huzaifas, iweiss, jclere, jiehuang, jkaluza, jochrist, jorton, jpallich, jperkins, jwon, kaycoth, krathod, kwills, kyoshida, lakagwu, lgao, luhliari, msochure, msvehla, mturk, nwallace, pahan, pjindal, pmackay, rguimara, rstancel, rsvoboda, security-response-team, smaestri, szappis, tom.jenkinson, tuxmealux+redhatbz, yborgess, yozone
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	httpd 2.4.47	Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in Apache httpd. A possible regression from an earlier security fix broke behavior of MergeSlashes. The highest threat from this vulnerability is to data integrity.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-11-10 17:28:57 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:	1969241, 1972498, 1972499, 1972500
Bug Blocks:	1966744

Description Pedro Sampaio 2021-06-01 19:04:08 UTC

Possible regression from security fix broke behavior of MergeSlashes.

References:

https://bz.apache.org/bugzilla/show_bug.cgi?id=65238
https://github.com/apache/httpd/commit/eb986059aa5aa0b6c1d52714ea83e3dd758afdd1

Comment 2 Ted Jongseok Won 2021-06-02 05:48:08 UTC

This vulnerability is out of security support scope for the following products:
 * Red Hat JBoss Enterprise Application Platform 6
 * Red Hat JBoss Enterprise Web Server 2

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

Comment 3 Huzaifa S. Sidhpurwala 2021-06-08 04:01:57 UTC

Created httpd tracking bugs for this issue:

Affects: fedora-all [bug 1969241]

Comment 12 errata-xmlrpc 2021-11-09 17:57:39 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2021:4257 https://access.redhat.com/errata/RHSA-2021:4257

Comment 13 errata-xmlrpc 2021-11-10 17:15:48 UTC

This issue has been addressed in the following products:

  Red Hat JBoss Core Services

Via RHSA-2021:4613 https://access.redhat.com/errata/RHSA-2021:4613

Comment 14 errata-xmlrpc 2021-11-10 17:19:14 UTC

This issue has been addressed in the following products:

  JBoss Core Services on RHEL 7
  JBoss Core Services for RHEL 8

Via RHSA-2021:4614 https://access.redhat.com/errata/RHSA-2021:4614

Comment 15 Product Security DevOps Team 2021-11-10 17:28:53 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-2021-30641