Bug 1973787 (CVE-2021-32575)

Summary:	CVE-2021-32575 nomad: bridge networking mode allows ARP spoofing from other bridged tasks on same node
Product:	[Other] Security Response	Reporter:	Guilherme de Almeida Suckevicz <gsuckevi>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	etamir, hchiramm, hvyas, jarrpa, madam, nbecker, ocs-bugs, rajasing, sabose, sostapov, tnielsen
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	nomad 0.12.12, nomad 1.0.5, nomad 1.1.1	Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in Nomad. The bridge networking mode in HashiCorp Nomad and Nomad Enterprise allows ARP spoofing from other bridged tasks on the same node.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-06-28 16:40:25 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:
Bug Blocks:	1973788

Description Guilherme de Almeida Suckevicz 2021-06-18 17:14:45 UTC

HashiCorp Nomad and Nomad Enterprise up to version 1.0.4 bridge networking mode allows ARP spoofing from other bridged tasks on the same node. Fixed in 0.12.12, 1.0.5, and 1.1.0 RC1.

Reference:
https://discuss.hashicorp.com/t/hcsec-2021-14-nomad-bridge-networking-mode-allows-arp-spoofing-from-other-bridged-tasks-on-same-node/24296

Comment 1 Hardik Vyas 2021-06-21 15:06:07 UTC

Upstream fix: https://github.com/hashicorp/nomad/commit/003d68fe6df652b172bc68beabd11a25fd7e1b58
PR: https://github.com/hashicorp/nomad/pull/10572

Comment 2 Product Security DevOps Team 2021-06-28 16:40:25 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-2021-32575