Red Hat Openshift Data Foundation 4 /etc/passwd default permission

Summaryinfo

A vulnerability was found in Red Hat Openshift Data Foundation 4. It has been rated as critical. This issue affects some unknown processing of the file /etc/passwd. Performing a manipulation results in default permission. This vulnerability is known as CVE-2025-8766. Attacking locally is a requirement. No exploit is available.

Detailsinfo

A vulnerability, which was classified as critical, was found in Red Hat Openshift Data Foundation 4. This affects an unknown function of the file /etc/passwd. The manipulation with an unknown input leads to a default permission vulnerability. CWE is classifying the issue as CWE-276. During installation, installed file permissions are set to allow anyone to modify those files. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

A container privilege escalation flaw was found in certain Multi-Cloud Object Gateway Core images. This issue stems from the /etc/passwd file being created with group-writable permissions during build time. In certain conditions, an attacker who can execute commands within an affected container, even as a non-root user, can leverage their membership in the root group to modify the /etc/passwd file. This could allow the attacker to add a new user with any arbitrary UID, including UID 0, leading to full root privileges within the container

The advisory is shared at access.redhat.com. This vulnerability is uniquely identified as CVE-2025-8766 since 08/08/2025. The exploitability is told to be difficult. An attack has to be approached locally. The exploitation requires an enhanced level of successful authentication. Technical details are known, but no exploit is available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 03/20/2026). MITRE ATT&CK project uses the attack technique T1222 for this issue.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• Virtualization Software

Vendor

• Red Hat

Name

• Openshift Data Foundation

Version

• 4

License

• open-source

Website

• Vendor: https://www.redhat.com/

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CPE 2.2info

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