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CVE Record

CVE-2010-2020: sys/nfsclient/nfs_vfsops.c in the NFS client in the kernel in FreeBSD 7.2 through 8.1-PRERELEASE, when vfs....

sys/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.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysis

Security readout for executives and security teams

This is a FreeBSD kernel NFS client flaw that can let a local user gain higher privileges. It applies to FreeBSD 7.2 through 8.1-PRERELEASE when user-mounted filesystems are enabled. The main business risk is an attacker turning limited local access on an old FreeBSD host into broader system control. Exposure is most likely on legacy FreeBSD 7.2 through 8.1-PRERELEASE systems where vfs.usermount is enabled and untrusted local users can issue mount requests. Internet-facing exposure is not indicated by the sources. Treat this as high priority only for legacy FreeBSD systems with local users or exposed service accounts. It is not described as remote, but successful exploitation can turn limited access into privileged control. Mitigation focus: Identify FreeBSD 7.2 through 8.1-PRERELEASE systems.; Check whether vfs.usermount is enabled on affected hosts.; Review FreeBSD-SA-10:06 for vendor-provided updates or workarounds..

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Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

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Affected products

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