CVE-2018-1000028 Missing authorization in n/a

High 7.4 Published Updated

Remote attackers can read or write unauthorized files via NFS when the server exports a filesystem with the rootsquash option enabled.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is CVE-2018-1000028?

CVE-2018-1000028 is a high-severity missing authorization vulnerability in Linux kernel, published on 9 Feb 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Linux kernel version after commit bdcf0a423ea1 - 4.15-rc4+, 4.14.8+, 4.9.76+, 4.4.111+ contains a Incorrect Access Control vulnerability in NFS server (nfsd) that can result in remote users reading or writing files they should not be able to via NFS. This attack appear to be exploitable via NFS server must export a filesystem with the "rootsquash" options enabled. This vulnerability appears to have been fixed in after commit 1995266727fa.

Weakness: CWE-269

Which versions are affected by CVE-2018-1000028?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2018-1000028?

Apply the vendor's patch.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2018-1000028 being exploited?

There is no known exploitation of CVE-2018-1000028 in the wild and no public exploit code.

All Linux kernel vulnerabilities

Sources

Also known as DEBIAN-CVE-2018-1000028, GHSA-p7mv-684h-c4rx.

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