FreeBSD 'mountd' Incorrect Netmask Access Control List (ACL) Security Bypass Vulnerability

BID:47517

Info

FreeBSD 'mountd' Incorrect Netmask Access Control List (ACL) Security Bypass Vulnerability

Bugtraq ID: 47517
Class: Access Validation Error
CVE: CVE-2011-1739
Remote: Yes
Local: No
Published: Apr 20 2011 12:00AM
Updated: Apr 20 2011 12:00AM
Credit: FreeBSD
Vulnerable: FreeBSD Freebsd 8.2-RELEASE-p1
FreeBSD FreeBSD 8.1-RELEASE
FreeBSD FreeBSD 8.1-PRERELEASE
FreeBSD FreeBSD 8.0-STABLE
FreeBSD FreeBSD 8.0-RELEASE
FreeBSD FreeBSD 7.3-STABLE
FreeBSD FreeBSD 7.3-RELEASE-p1
FreeBSD FreeBSD 7.2-STABLE
FreeBSD FreeBSD 7.2-RELEASE-p4
FreeBSD FreeBSD 7.2-RELEASE-p1
FreeBSD FreeBSD 7.2-RC2
FreeBSD FreeBSD 7.2-PRERELEASE
FreeBSD FreeBSD 7.1-STABLE
FreeBSD FreeBSD 7.1-RELEASE-p6
FreeBSD FreeBSD 7.1-RELEASE-p5
FreeBSD FreeBSD 7.1-RELEASE-p4
FreeBSD FreeBSD 7.1 Rc1
FreeBSD FreeBSD 7.1 -RELEASE-p2
FreeBSD FreeBSD 7.1 -RELEASE-p1
FreeBSD FreeBSD 7.1 -PRE-RELEASE
FreeBSD FreeBSD 7.1
FreeBSD FreeBSD 7.0-STABLE
FreeBSD FreeBSD 7.0-RELEASE-p8
FreeBSD FreeBSD 7.0-RELEASE-p3
FreeBSD FreeBSD 7.0-RELEASE-p12
FreeBSD FreeBSD 7.0-RELEASE-p11
FreeBSD FreeBSD 7.0-RELEASE
FreeBSD FreeBSD 7.0 BETA4
FreeBSD FreeBSD 7.0 -RELENG
FreeBSD FreeBSD 7.0 -RELEASE-p9
FreeBSD FreeBSD 7.0 -PRERELEASE
FreeBSD FreeBSD 7.0
Not Vulnerable:

Discussion

FreeBSD 'mountd' Incorrect Netmask Access Control List (ACL) Security Bypass Vulnerability

FreeBSD is prone to a security-bypass vulnerability that occurs in the 'mountd' daemon.

Remote attackers can exploit this issue to allow client computers to mount to Network Filesystem (NFS) filesystems without proper permission.

Exploit / POC

FreeBSD 'mountd' Incorrect Netmask Access Control List (ACL) Security Bypass Vulnerability

Currently we are not aware of any working exploits. If you feel we are in error or if you are aware of more recent information, please mail us at: [email protected].

Solution / Fix

FreeBSD 'mountd' Incorrect Netmask Access Control List (ACL) Security Bypass Vulnerability

Solution:
Updates are available; please see the references for more information.

References

FreeBSD 'mountd' Incorrect Netmask Access Control List (ACL) Security Bypass Vulnerability

References:

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