CVE-2025-3528

Mirror-registry: local privilege escalation due to incorrect permissions in mirror-registry

Description

A flaw was found in the Mirror Registry. The quay-app container shipped as part of the Mirror Registry for OpenShift has write access to the `/etc/passwd`. This flaw allows a malicious actor with access to the container to modify the passwd file and elevate their privileges to the root user within that pod.

Remediation

Workaround:

  • This issue can be mitigated by setting this line in each mirror registry systemd configurations: --security-opt=no-new-privileges This would prevent any privilege escalation until the issue is fixed.

Category

8.2
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.01%
Affected: Red Hat mirror registry for Red Hat OpenShift
Published at:
Updated at:

References

Link Tags
https://access.redhat.com/security/cve/CVE-2025-3528 vdb entry
https://bugzilla.redhat.com/show_bug.cgi?id=2359143 issue tracking

Frequently Asked Questions

What is the severity of CVE-2025-3528?
CVE-2025-3528 has been scored as a high severity vulnerability.
How to fix CVE-2025-3528?
As a workaround for remediating CVE-2025-3528: This issue can be mitigated by setting this line in each mirror registry systemd configurations: --security-opt=no-new-privileges This would prevent any privilege escalation until the issue is fixed.
Is CVE-2025-3528 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-3528 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-2025-3528?
CVE-2025-3528 affects Red Hat mirror registry for Red Hat OpenShift.
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