CVE-2018-16947

moderate-risk
Published 2018-09-12

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.

Do I need to act?

~
1.5% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (3)

Openafs

Affected Vendors

Debian Openafs

References (6)

Vendor Advisory http://openafs.org/pages/security/OPENAFS-SA-2018-001.txt
Third Party Advisory https://lists.debian.org/debian-lts-announce/2018/09/msg00024.html
Third Party Advisory https://www.debian.org/security/2018/dsa-4302
Vendor Advisory http://openafs.org/pages/security/OPENAFS-SA-2018-001.txt
Third Party Advisory https://lists.debian.org/debian-lts-announce/2018/09/msg00024.html
Third Party Advisory https://www.debian.org/security/2018/dsa-4302
45
/ 100
moderate-risk
Severity 32/34 · Critical
Exploitability 4/34 · Minimal
Exposure 9/34 · Low