Bug 2003248 (CVE-2021-40797)

Summary:	CVE-2021-40797 openstack-neutron: Routes middleware memory leak for nonexistent controllers
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:	aileenc, bibryam, chazlett, chrisw, dalvarez, dbecker, drieden, ggaughan, hbraun, janstey, jjoyce, jochrist, jschluet, lhh, lpeer, mburns, pantinor, rhos-maint, sclewis, scohen, slinaber, srevivo
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	neutron 16.4.1, neutron 17.2.1, neutron 18.1.1	Doc Type:	If docs needed, set a value
Doc Text:	A resource-allocation flaw was found in openstack-neutron. An authenticated attacker could make API requests involving nonexistent controllers causing the API worker to consume increasing amounts of memory. This flaw could be exploited to force API performance degradation or denial of service.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2022-03-24 13:45:52 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:	2004296, 2004297, 2004298
Bug Blocks:	2003249

Description Pedro Sampaio 2021-09-10 19:09:47 UTC

A flaw was found in openstack-neutron <16.4.1, >=17.0.0 <17.2.1, >=18.0.0 <18.1.1. By making API requests involving nonexistent controllers, an authenticated user may cause the API worker to consume increasing amounts of memory, resulting in API performance degradation or denial of service.

References:

https://launchpad.net/bugs/1942179
https://security.openstack.org/ossa/OSSA-2021-006.html
http://www.openwall.com/lists/oss-security/2021/09/09/2

Comment 1 Summer Long 2021-09-13 04:06:47 UTC

Upstream patches:
    https://review.opendev.org/807638 (Queens)
    https://review.opendev.org/807637 (Rocky)
    https://review.opendev.org/807636 (Stein)
    https://review.opendev.org/807635 (Train)
    https://review.opendev.org/807634 (Ussuri)
    https://review.opendev.org/807633 (Victoria)
    https://review.opendev.org/807632 (Wallaby)
    https://review.opendev.org/807335 (Xena)

Comment 2 Summer Long 2021-09-14 23:43:32 UTC

Created openstack-neutron tracking bugs for this issue:

Affects: openstack-rdo [bug 2004296]

Comment 5 errata-xmlrpc 2022-03-23 22:28:03 UTC

This issue has been addressed in the following products:

  Red Hat OpenStack Platform 16.2

Via RHSA-2022:0996 https://access.redhat.com/errata/RHSA-2022:0996

Comment 6 errata-xmlrpc 2022-03-24 10:56:13 UTC

This issue has been addressed in the following products:

  Red Hat OpenStack Platform 16.1

Via RHSA-2022:0990 https://access.redhat.com/errata/RHSA-2022:0990

Comment 7 Product Security DevOps Team 2022-03-24 13:45:49 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-2021-40797