Bug 1793278 (CVE-2019-19354) - CVE-2019-19354 operator-framework/hadoop: /etc/passwd is given incorrect privileges
Summary: CVE-2019-19354 operator-framework/hadoop: /etc/passwd is given incorrect priv...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2019-19354
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1793311 1793312 1793313
Blocks: 1776664 1942187
TreeView+ depends on / blocked
 
Reported: 2020-01-21 04:18 UTC by Mark Cooper
Modified: 2021-03-23 19:59 UTC (History)
9 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
An insecure modification vulnerability in the /etc/passwd file was found in the operator-framework/hadoop. An attacker with access to the container could use this flaw to modify /etc/passwd and escalate their privileges.
Clone Of:
Environment:
Last Closed: 2020-05-04 16:31:47 UTC
Embargoed:

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System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2020:1938 0 None None None 2020-05-04 10:50:51 UTC

Description Mark Cooper 2020-01-21 04:18:53 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/hadoop-container.

Original bug:
https://bugzilla.redhat.com/show_bug.cgi?id=1791534
Comment 1 Mark Cooper 2020-01-21 04:18:55 UTC 
Statement:

By default this vulnerability is not exploitable in un-privilieged containers running on OpenShift Container Platform. This is because the system call SETUID and SETGID is blocked by the default seccomp policy.
Comment 4 Mark Cooper 2020-01-22 03:17:10 UTC 
Acknowledgments:

Name: Joseph LaMagna-Reiter (SPR Inc.)
Comment 6 Mark Cooper 2020-02-28 02:27:52 UTC 
External References:

https://access.redhat.com/articles/4859371
Comment 7 errata-xmlrpc 2020-05-04 10:50:47 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.4

Via RHSA-2020:1938 https://access.redhat.com/errata/RHSA-2020:1938
Comment 8 Product Security DevOps Team 2020-05-04 16:31:47 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-2019-19354
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