nfs-utils: Improper authentication of an incoming request when an IP based authentication used
Published Feb 15, 2014
7.5
HIGHCVSS 2.0
EPSS 2.56%
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.
Affected products
No data.
No data.
Red Hat Enterprise Linux 6
nfs-utils-1:1.2.3-15.el6
Fixed · RHSA-2011:1534
Red Hat Enterprise Linux 4
nfs-utils
Not affected
Red Hat Enterprise Linux 5
nfs-utils
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | nfs-utils-1:1.2.3-15.el6 | Fixed | RHSA-2011:1534 |
| Red Hat Enterprise Linux 4 | nfs-utils | Not affected | n/a |
| Red Hat Enterprise Linux 5 | nfs-utils | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue did not affect the versions of nfs-utils as shipped with Red Hat Enterprise Linux 4 and 5. The Red Hat Security Response Team has rated this issue as having low security impact; a future update in Red Hat Enterprise Linux 6 may address this flaw.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.56% (0.02565) | 84.57th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.54% (0.02543) | 82.89th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.62% (0.00620) | 68.23th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.77% (0.00769) | 81.95th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.77% (0.00769) | 80.66th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.77% (0.00769) | 78.45th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.21% (0.01213) | 66.61th | v2 (v2022.01.01) |
| Feb 13, 2023 | 1.21% (0.01213) | 66.13th | v2 (v2022.01.01) |
| Feb 3, 2023 | 1.11% (0.01108) | 54.42th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.21% (0.01213) | 64.21th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.21% (0.01213) | 40.54th | v2 (v2022.01.01) |
References (8)
- http://marc.info/?l=linux-nfs&m=130875695821953&w=2 mailing-listx_refsource_MLIST
- http://rhn.redhat.com/errata/RHSA-2011-1534.html vendor-advisoryx_refsource_REDHAT
- http://sourceforge.net/projects/nfs/files/nfs-utils/1.2.4/ x_refsource_CONFIRM
- http://sourceforge.net/projects/nfs/files/nfs-utils/1.2.4/Changelog-nfs-utils-1.2.4/download x_refsource_CONFIRM
- https://access.redhat.com/security/cve/CVE-2011-2500 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=716949 x_refsource_CONFIRMIssue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2011-2500
- https://www.cve.org/CVERecord?id=CVE-2011-2500
| Link | Providers | Tags |
|---|---|---|
| http://marc.info/?l=linux-nfs&m=130875695821953&w=2 | mailing-listx_refsource_MLIST | |
| http://rhn.redhat.com/errata/RHSA-2011-1534.html | vendor-advisoryx_refsource_REDHAT | |
| http://sourceforge.net/projects/nfs/files/nfs-utils/1.2.4/ | x_refsource_CONFIRM | |
| http://sourceforge.net/projects/nfs/files/nfs-utils/1.2.4/Changelog-nfs-utils-1.2.4/download | x_refsource_CONFIRM | |
| https://access.redhat.com/security/cve/CVE-2011-2500 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=716949 | x_refsource_CONFIRMIssue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2011-2500 | ||
| https://www.cve.org/CVERecord?id=CVE-2011-2500 |
Change history (0)
No recorded changes yet.