CVE-2018-16947

Name: CVE-2018-16947
Creator: NVD / NIST
Published: 2018-09-12T01:29:00.39+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 2.60%

Last modified Jun 17, 2026

CVE-2018-16947 is a vulnerability of currently unknown severity. An issue was discovered in OpenAFS before 1.6.23 and 1.8.x before 1.8.2. The backup tape controller (butc) process accepts incoming RPCs but does not require (or allow for) authentication of those RPCs. EPSS estimates a 2.60% chance of exploitation in the next 30 days.

Description

An issue was discovered in OpenAFS before 1.6.23 and 1.8.x before 1.8.2. The backup tape controller (butc) process accepts incoming RPCs but does not require (or allow for) authentication of those RPCs. Handling those RPCs results in operations being performed with administrator credentials, including dumping/restoring volume contents and manipulating the backup database. For example, an unauthenticated attacker can replace any volume's content with arbitrary data.

Metrics

EPSS Probability

2.60%

83.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-287

Affected Software

Vendor	Product	Versions
Openafs	Openafs	< 1.6.23
Openafs	Openafs	>= 1.8.0, < 1.8.2
Debian	Debian Linux	8.0
Debian	Debian Linux	9.0

References

http://openafs.org/pages/security/OPENAFS-SA-2018-001.txtVendor Advisory
https://lists.debian.org/debian-lts-announce/2018/09/msg00024.htmlThird Party Advisory
https://www.debian.org/security/2018/dsa-4302Third Party Advisory
http://openafs.org/pages/security/OPENAFS-SA-2018-001.txtVendor Advisory
https://lists.debian.org/debian-lts-announce/2018/09/msg00024.htmlThird Party Advisory
https://www.debian.org/security/2018/dsa-4302Third Party Advisory

Timeline

Published: Sep 12, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-16947?

How severe is CVE-2018-16947?

Severity scoring for CVE-2018-16947 is pending analysis. The EPSS model estimates a 2.60% probability of exploitation in the next 30 days.

How do I fix CVE-2018-16947?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-16947?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST