Description
A container privilege escalation flaw was found in KServe ModelMesh container 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.
Problem types
Product status
sha256:97e2bd9b587f08e135a9aeb9b3e0dc6eafa1a9bdacbb5ecb681ce9bd5aa37fc9 (rpm) before *
sha256:53ac36baa374159b9065c718a9ede821bbb61d9ebe9502b2243e0a9f7aca0d16 (rpm) before *
sha256:687c8eeed55f021ecaab1307f0e88b5b16d91f72d63b3d7168d7bbee90e8947b (rpm) before *
sha256:1709fa3c79aad4ba7eb9be8299949396092c8e20210124e0c0936385bc04e839 (rpm) before *
sha256:92629b1462ca2ed121dd2f3069a005d78e00e1344d330d6a8710f53ec58b74b8 (rpm) before *
Timeline
| 2025-08-26: | Reported to Red Hat. |
| 2025-09-30: | Made public. |
Credits
Red Hat would like to thank Antony Di Scala and Michael Whale for reporting this issue.
References
access.redhat.com/errata/RHSA-2025:16981 (RHSA-2025:16981)
access.redhat.com/errata/RHSA-2025:16982 (RHSA-2025:16982)
access.redhat.com/errata/RHSA-2025:16983 (RHSA-2025:16983)
access.redhat.com/errata/RHSA-2025:16984 (RHSA-2025:16984)
access.redhat.com/errata/RHSA-2025:17501 (RHSA-2025:17501)
access.redhat.com/security/cve/CVE-2025-57852
bugzilla.redhat.com/show_bug.cgi?id=2391105 (RHBZ#2391105)
