The NFS client implementation in the kernel in Red Hat Enterprise Linux (RHEL) 3, when a filesystem is mounted with the noacl option, checks permissions for the open system call via vfs_permission (mode bits) data rather than an NFS ACCESS call to the server, which allows local client processes to obtain a false success status from open calls that the server would deny, and possibly obtain sensitive information about file permissions on the server, as demonstrated in a root_squash environment. NOTE: it is uncertain whether any scenarios involving this issue cross privilege boundaries.
History

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cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published: 2007-09-18T19:00:00Z

Updated: 2024-09-16T20:47:25.494Z

Reserved: 2006-12-19T00:00:00Z

Link: CVE-2007-0004

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2007-09-18T19:17:00.000

Modified: 2024-11-21T00:24:44.960

Link: CVE-2007-0004

cve-icon Redhat

No data.