CVE-2010-2020

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Summary

CVECVE-2010-2020
StatePUBLISHED
Assignerfreebsd
Source PriorityCVE Program / NVD first with legacy fallback
Published2010-05-28 18:30:01 UTC
Updated2026-04-29 01:13:23 UTC
Descriptionsys/nfsclient/nfs_vfsops.c in the NFS client in the kernel in FreeBSD 7.2 through 8.1-PRERELEASE, when vfs.usermount is enabled, does not validate the length of a certain fhsize parameter, which allows local users to gain privileges via a crafted mount request.

Risk And Classification

Primary CVSS: v2.0 6.9 from [email protected]

AV:L/AC:M/Au:N/C:C/I:C/A:C

Problem Types: CWE-20 | n/a

CVSS v2.0 Breakdown

Access Vector
Local
Access Complexity
Medium
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete

AV:L/AC:M/Au:N/C:C/I:C/A:C

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Freebsd Freebsd 7.2 All All All
Operating System Freebsd Freebsd 7.2 pre-release All All
Operating System Freebsd Freebsd 7.2 stable All All
Operating System Freebsd Freebsd 8.0 All All All
Operating System Freebsd Freebsd 8.1-prerelease All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
security.FreeBSD.org/advisories/FreeBSD-SA-10:06.nfsclient.asc af854a3a-2127-422b-91ae-364da2661108 security.FreeBSD.org Vendor Advisory
SecurityTracker.com Archives - FreeBSD Parameter Validation Flaw in nfsclient Lets Local Users Gain Elevated Privileges af854a3a-2127-422b-91ae-364da2661108 securitytracker.com
FreeBSD Kernel nfs_mount() Exploit af854a3a-2127-422b-91ae-364da2661108 www.exploit-db.com
FreeBSD Kernel mountnfs() Exploit af854a3a-2127-422b-91ae-364da2661108 www.exploit-db.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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