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Fencer Intel
high 7.5

CVE-2011-2500 json

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 NF…

published 2014-02-15 12 y ago modified 2026-06-16 4 mo ago also EUVD-2011-2487

cvss
7.5
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.6%
EPSS 2.6% chance of exploitation in 30 days, percentile 85%
public exploits
0
none known

Summary

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.

Patch / fix

  • nfs-utils Debian 14, Debian 13, Debian 12 1:1.2.4-1

debian advisories DEBIAN-CVE-2011-2500

  • nfs-utils RHEL 6 1:1.2.3-15.el6

red hat advisories RHSA-2011:1534

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2011-2500 updated cvss 3.2

nfs-utils: Improper authentication of an incoming request when an IP based authentication used

  • Red Hat Enterprise Linux Desktop (v. 6) nfs-utils 1.2.3-15.el6 Red Hat Enterprise Linux HPC Node (v. 6) nfs-utils 1.2.3-15.el6 Red Hat Enterprise Linux Server (v. 6) nfs-utils 1.2.3-15.el6 Red Hat Enterprise Linux Workstation (v. 6) nfs-utils 1.2.3-15.el6
    fixed: vendor fix RHSA-2011:1534
  • Red Hat Enterprise Linux 4 nfs-utils Red Hat Enterprise Linux 5 nfs-utils
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.56% chance of exploitation in the next 30 days, higher than 85% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-264 Permissions, Privileges, and Access Controls

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.