CVE-2013-4851

NameCVE-2013-4851
DescriptionThe vfs_hang_addrlist function in sys/kern/vfs_export.c in the NFS server implementation in the kernel in FreeBSD 8.3 and 9.x through 9.1-RELEASE-p5 controls authorization for host/subnet export entries on the basis of group information sent by the client, which allows remote attackers to bypass file permissions on NFS filesystems via crafted requests.
SourceCVE (at NVD; oss-sec, fulldisc, OSVDB, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SuSE, Mageia, more)
ReferencesDSA-2743-1
NVD severitymedium (attack range: remote)
Debian Bugs717958, 717959
Debian/oldstablenot vulnerable.
Debian/stablenot vulnerable.
Debian/testingnot known to be vulnerable.
Debian/unstablenot known to be vulnerable.

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
kfreebsd-8 (PTS)squeeze8.1+dfsg-8+squeeze4fixed
squeeze (security)8.1+dfsg-8+squeeze3fixed
wheezy8.3-6+deb7u1fixed
kfreebsd-9 (PTS)wheezy9.0-10+deb70.7fixed
wheezy (security)9.0-10+deb70.9fixed

The information above is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
kfreebsd-8source(unstable)8.3-7medium717959
kfreebsd-8sourcesqueeze(not affected)
kfreebsd-8sourcewheezy8.3-6+deb7u1medium
kfreebsd-9source(unstable)9.1-4medium717958
kfreebsd-9sourcewheezy9.0-10+deb70.3mediumDSA-2743-1

Notes

[squeeze] - kfreebsd-8 <not-affected> (FreeBSD NFS server implementation was not supported in squeeze)

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