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This vulnerability has been modified since it was last analyzed by the NVD. It is awaiting reanalysis which may result in further changes to the information provided.
The nfs_permission function in fs/nfs/dir.c in the NFS client implementation in the Linux kernel 184.108.40.206 and earlier, when atomic_open is available, does not check execute (aka EXEC or MAY_EXEC) permission bits, which allows local users to bypass permissions and execute files, as demonstrated by files on an NFSv4 fileserver.
View Analysis Description
Access Vector (AV):
Access Complexity (AC):
Allows unauthorized disclosure of informationAllows unauthorized modificationAllows disruption of service
This issue did not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 2.1, and 3.
It was addressed in Red Hat Enterprise Linux 4, 5, and Red Hat Enterprise MRG via https://rhn.redhat.com/errata/RHSA-2009-1132.html , https://rhn.redhat.com/errata/RHSA-2009-1106.html , and https://rhn.redhat.com/errata/RHSA-2009-1157.html .
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http://www.securityfocus.com/archive/1/505254/100/0/threaded [No Types Assigned]
http://www.securityfocus.com/archive/1/507985/100/0/threaded [No Types Assigned]
http://www.securityfocus.com/archive/1/archive/1/505254/100/0/threaded [No Types Assigned]
http://www.securityfocus.com/archive/1/archive/1/507985/100/0/threaded [No Types Assigned]
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8543 [No Types Assigned]
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9990 [No Types Assigned]
http://oval.mitre.org/repository/data/getDef?id=oval:org.mitre.oval:def:8543 [No Types Assigned]
http://oval.mitre.org/repository/data/getDef?id=oval:org.mitre.oval:def:9990 [No Types Assigned]