CVE-2025-8766

Summary

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

Affected Software

Weaknesses

• CWE-276: Incorrect Default Permissions

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: total

noobaa-core: Excessive permissions of /etc could lead to escalation of privilege in the noobaa-core container

Additional References

• https://access.redhat.com/security/cve/CVE-2025-8766
• https://bugzilla.redhat.com/show_bug.cgi?id=2387265
• https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-8766.json

References

• https://access.redhat.com/security/cve/CVE-2025-8766
• https://bugzilla.redhat.com/show_bug.cgi?id=2387265

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