CVE-2018-17159

Description

In FreeBSD before 11.2-STABLE(r340854) and 11.2-RELEASE-p5, the NFS server lacks a bounds check in the READDIRPLUS NFS request. Unprivileged remote users with access to the NFS server can cause a resource exhaustion by forcing the server to allocate an arbitrarily large memory allocation.

Category

7.5
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 7.85% Top 10%
Vendor Advisory freebsd.org
Affected: FreeBSD FreeBSD
Published at:
Updated at:

References

Link Tags
http://www.securityfocus.com/bid/106192 third party advisory vdb entry
https://security.freebsd.org/advisories/FreeBSD-SA-18:13.nfs.asc third party advisory vendor advisory
http://www.securitytracker.com/id/1042164 third party advisory vdb entry
https://secuniaresearch.flexerasoftware.com/secunia_research/2018-24/ third party advisory

Frequently Asked Questions

What is the severity of CVE-2018-17159?
CVE-2018-17159 has been scored as a high severity vulnerability.
How to fix CVE-2018-17159?
To fix CVE-2018-17159, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-17159 being actively exploited in the wild?
It is possible that CVE-2018-17159 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~8% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2018-17159?
CVE-2018-17159 affects FreeBSD FreeBSD.
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