CVE-2018-16947 Information

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.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Reference

http://openafs.org/pages/security/OPENAFS-SA-2018-001.txt https://lists.debian.org/debian-lts-announce/2018/09/msg00024.html https://www.debian.org/security/2018/dsa-4302

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8