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 exports, which allows remote attackers to mount filesystems by establishing crafted DNS A and PTR records.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.56%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 2.0
- 7.5 HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P
- EPSS
- 2.56% probability · 84th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-264
- Affected
- linux-nfs/nfs-utils
- Source
- secalert@redhat.com
References
- 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/
- http://sourceforge.net/projects/nfs/files/nfs-utils/1.2.4/Changelog-nfs-utils-1.2.4/download
- https://bugzilla.redhat.com/show_bug.cgi?id=716949
- 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/
- http://sourceforge.net/projects/nfs/files/nfs-utils/1.2.4/Changelog-nfs-utils-1.2.4/download
- https://bugzilla.redhat.com/show_bug.cgi?id=716949
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.