Bug 1850194 (CVE-2019-3689)

Summary:	CVE-2019-3689 nfs-utils: root-owned files stored in insecure /var/lib/nfs
Product:	[Other] Security Response	Reporter:	Guilherme de Almeida Suckevicz <gsuckevi>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	bfields, steved
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-06-29 17:20:28 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:	1850196
Bug Blocks:	1850195

Description Guilherme de Almeida Suckevicz 2020-06-23 17:20:52 UTC

The nfs-utils package in SUSE Linux Enterprise Server 12 before and including version 1.3.0-34.18.1 and in SUSE Linux Enterprise Server 15 before and including version 2.1.1-6.10.2 the directory /var/lib/nfs is owned by statd:nogroup. This directory contains files owned and managed by root. If statd is compromised, it can therefore trick processes running with root privileges into creating/overwriting files anywhere on the system.

Reference:
https://bugzilla.suse.com/show_bug.cgi?id=1150733

Upstream commit:
https://git.linux-nfs.org/?p=steved/nfs-utils.git;a=commitdiff;h=fee2cc29e888f2ced6a76990923aef19d326dc0e

Comment 1 Guilherme de Almeida Suckevicz 2020-06-23 17:22:01 UTC

Created nfs-utils tracking bugs for this issue:

Affects: fedora-all [bug 1850196]

Comment 2 Riccardo Schirone 2020-06-29 12:50:01 UTC

Statement:

This issue did not affect the versions of nfs-utils as shipped with Red Hat Enterprise Linux 6, 7, and 8 as /var/lib/nfs directory is owned by root:root.

Comment 3 Product Security DevOps Team 2020-06-29 17:20:28 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-2019-3689