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.
References
Link | Resource |
---|---|
https://bugzilla.redhat.com/show_bug.cgi?id=199715 |
Configurations
Information
Published : 2007-09-18 12:17
Updated : 2008-09-05 14:16
NVD link : CVE-2007-0004
Mitre link : CVE-2007-0004
JSON object : View
CWE
CWE-264
Permissions, Privileges, and Access Controls
Products Affected
redhat
- enterprise_linux