CVE-2013-4851

Severity

64%

Complexity

99%

Confidentiality

81%

The 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.

The 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.

CVSS 2.0 Base Score 6.4. CVSS Attack Vector: network. CVSS Attack Complexity: low. CVSS Vector: (AV:N/AC:L/Au:N/C:P/I:P/A:N).

Overview

Type

FreeBSD

First reported 11 years ago

2013-07-29 13:59:00

Last updated 5 years ago

2019-03-18 15:35:00

Affected Software

FreeBSD 8.3

8.3

FreeBSD 9.0

9.0

FreeBSD 9.1

9.1

FreeBSD 9.1 Patch 4

9.1

FreeBSD 9.1 Patch 5

9.1

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