Bug 1817530 (CVE-2020-10695)

Summary:	CVE-2020-10695 containers/redhat-sso-7: /etc/passwd is given incorrect privileges
Product:	[Other] Security Response	Reporter:	Paramvir jindal <pjindal>
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, chazlett, drieden, jlieskov, krathod, pdrozd, pjindal, sthorger
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	redhat-sso 7.4.4	Doc Type:	If docs needed, set a value
Doc Text:	An insecure modification flaw in the /etc/passwd file was found in the redhat-sso-7 container. An attacker with access to the container can use this flaw to modify the /etc/passwd and escalate their privileges.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-12-15 22:18:26 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:	1776664

Description Paramvir jindal 2020-03-26 14:16:47 UTC

It has been found that multiple containers modify the permissions of /etc/passwd to make them modifiable by users other than root. An attacker with access to the running container can exploit this to modify /etc/passwd to add a user and escalate their privileges. This CVE is specific to the openshift/redhat-sso-7 container.

Original bug:
https://bugzilla.redhat.com/show_bug.cgi?id=1791534

Comment 1 Paramvir jindal 2020-03-26 14:16:54 UTC

Acknowledgments:

Name: Joseph LaMagna-Reiter (SPR Inc.)

Comment 6 errata-xmlrpc 2020-12-15 17:14:41 UTC

This issue has been addressed in the following products:

  Red Hat Single Sign-On

Via RHSA-2020:5533 https://access.redhat.com/errata/RHSA-2020:5533

Comment 7 errata-xmlrpc 2020-12-15 19:32:44 UTC

This issue has been addressed in the following products:

  RHEL-8 based Middleware Containers

Via RHSA-2020:5529 https://access.redhat.com/errata/RHSA-2020:5529

Comment 8 Product Security DevOps Team 2020-12-15 22:18:26 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-2020-10695