What’s Vulnerable › Vulnerabilities
CVE-2007-0004
- Severity: low (CVSS 1.9 v2.0)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2007-09-18 · updated 2026-06-16
- Weakness: CWE-264
Description
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.
Affected products
References
- https://bugzilla.redhat.com/show_bug.cgi?id=199715
- https://bugzilla.redhat.com/show_bug.cgi?id=199715
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