Bug 2152703 (CVE-2022-4318)

Summary:	CVE-2022-4318 cri-o: /etc/passwd tampering privesc
Product:	[Other] Security Response	Reporter:	Sage McTaggart <amctagga>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	cluster-maint, dffrench, dfreiber, gzaronik, infra-sig, jburrell, jwon, maxwell, ngough, oalbrigt, rgodfrey, rogbas, vkumar
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:	A vulnerability was found in cri-o. This issue allows the addition of arbitrary lines into /etc/passwd by use of a specially crafted environment variable.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2023-03-07 19:11:40 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:	2155653, 2152788, 2155654, 2155693, 2155694, 2155695, 2155696, 2155697, 2155698, 2155699, 2155700
Bug Blocks:	2142216

Description Sage McTaggart 2022-12-12 18:23:38 UTC

It is possible to craft an environment variable with newlines to add entries to /etc/passwd. Using the default SCC prevents the privesc. A malicious user could use a non-default SCC (anyuid, for example) that allows the process to become root on the host.

Comment 5 Anten Skrabec 2022-12-21 18:24:30 UTC

Created cri-o tracking bugs for this issue:

Affects: fedora-all [bug 2155654]


Created cri-o:1.21/cri-o tracking bugs for this issue:

Affects: epel-8 [bug 2155653]

Comment 6 Anten Skrabec 2022-12-21 22:57:53 UTC

Created cri-o:1.20/cri-o tracking bugs for this issue:

Affects: fedora-36 [bug 2155693]


Created cri-o:1.21/cri-o tracking bugs for this issue:

Affects: fedora-36 [bug 2155694]


Created cri-o:1.22/cri-o tracking bugs for this issue:

Affects: fedora-36 [bug 2155695]


Created cri-o:1.23/cri-o tracking bugs for this issue:

Affects: fedora-36 [bug 2155696]


Created cri-o:1.24/cri-o tracking bugs for this issue:

Affects: fedora-36 [bug 2155697]
Affects: fedora-37 [bug 2155699]


Created cri-o:1.25/cri-o tracking bugs for this issue:

Affects: fedora-36 [bug 2155698]
Affects: fedora-37 [bug 2155700]

Comment 7 errata-xmlrpc 2023-03-07 10:47:15 UTC

This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.12

Via RHSA-2023:1033 https://access.redhat.com/errata/RHSA-2023:1033

Comment 8 Product Security DevOps Team 2023-03-07 19:11:37 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-2022-4318

Comment 11 errata-xmlrpc 2023-04-04 11:42:41 UTC

This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.11

Via RHSA-2023:1503 https://access.redhat.com/errata/RHSA-2023:1503