CVE-2024-2905

Rpm-ostree: world-readable /etc/shadow file

Description

A security vulnerability has been discovered within rpm-ostree, pertaining to the /etc/shadow file in default builds having the world-readable bit enabled. This issue arises from the default permissions being set at a higher level than recommended, potentially exposing sensitive authentication data to unauthorized access.

Remediation

Workaround:

  • If you need to apply the fix immediately, you can run the following commands, using credentials that have administrator access to an OpenShift cluster: # List current permissions for all nodes for node in $( oc get nodes -oname) ; do echo $node ; oc debug $node -- bash -c "ls -alhZ /host/etc/*shadow*"; done # Set correct permissions for node in $( oc get nodes -oname) ; do echo $node ; oc debug $node -- chmod --verbose 0000 /host/etc/shadow /host/etc/gshadow /host/etc/shadow- /host/etc/gshadow-; done As a precaution, we recommend rotating all user credentials stored in those files.

Category

6.2
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.02%
Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com
Affected: Red Hat Red Hat Enterprise Linux 10
Affected: Red Hat Red Hat Enterprise Linux 9
Affected: Red Hat Red Hat Enterprise Linux 9.2 Extended Update Support
Affected: Red Hat Red Hat Enterprise Linux 8
Affected: Red Hat Red Hat OpenShift Container Platform 4
Published at:
Updated at:

References

Link Tags
https://access.redhat.com/errata/RHBA-2025:4872 vendor advisory
https://access.redhat.com/errata/RHSA-2024:3401 vendor advisory
https://access.redhat.com/errata/RHSA-2024:3823 vendor advisory
https://access.redhat.com/security/cve/CVE-2024-2905 vdb entry
https://bugzilla.redhat.com/show_bug.cgi?id=2271585 issue tracking
https://github.com/coreos/rpm-ostree/security/advisories/GHSA-2m76-cwhg-7wv6

Frequently Asked Questions

What is the severity of CVE-2024-2905?
CVE-2024-2905 has been scored as a medium severity vulnerability.
How to fix CVE-2024-2905?
As a workaround for remediating CVE-2024-2905: If you need to apply the fix immediately, you can run the following commands, using credentials that have administrator access to an OpenShift cluster: # List current permissions for all nodes for node in $( oc get nodes -oname) ; do echo $node ; oc debug $node -- bash -c "ls -alhZ /host/etc/*shadow*"; done # Set correct permissions for node in $( oc get nodes -oname) ; do echo $node ; oc debug $node -- chmod --verbose 0000 /host/etc/shadow /host/etc/gshadow /host/etc/shadow- /host/etc/gshadow-; done As a precaution, we recommend rotating all user credentials stored in those files.
Is CVE-2024-2905 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2024-2905 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-2905?
CVE-2024-2905 affects Red Hat Red Hat Enterprise Linux 10, Red Hat Red Hat Enterprise Linux 9, Red Hat Red Hat Enterprise Linux 9.2 Extended Update Support, Red Hat Red Hat Enterprise Linux 8, Red Hat Red Hat OpenShift Container Platform 4.
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