CVE-2007-0004 Security feature bypass in n/a

Low 1.9 Published 18 Sep 2007 Updated 16 Sep 2024

Local attackers can bypass NFS permission checks when using the noacl mount option, potentially reading sensitive file permission information from the server.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2007-0004?

CVE-2007-0004 is a low-severity vulnerability in Redhat Enterprise Linux, published on 18 Sep 2007. It can only be exploited from the same machine or local network, with no action from the victim.

Official 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.

Weakness: CWE-264

Which versions are affected by CVE-2007-0004?

It affects 1 product.

Products include Redhat Enterprise Linux.

How do I fix CVE-2007-0004?

No fix has been published for CVE-2007-0004 yet. Limit exposure of the affected software until one is available.

Is CVE-2007-0004 being exploited?

There is no known exploitation of CVE-2007-0004 in the wild and no public exploit code.

All Redhat Enterprise Linux vulnerabilities

Sources

Also known as GHSA-2p32-7jx3-9vw2.