CWE
264
Advisory Published
CVE Published
Updated

CVE-2009-1630

First published: Tue May 12 2009(Updated: )

Description of problem: Frank Filz reported: the problem is that permission checking is skipped if atomic open is possible, but when exec opens a file, it just opens it O_READONLY which means EXEC permission will not be checked at that time. This problem is observed by the following sequence (executed as root): mount -t nfs4 server:/ /mnt4 echo "ls" &gt;/mnt4/foo chmod 744 /mnt4/foo su guest -c "mnt4/foo" Reference: <a href="http://article.gmane.org/gmane.linux.nfs/26592">http://article.gmane.org/gmane.linux.nfs/26592</a>

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
Linux Kernel<=2.6.29.3
openSUSE=11.0
openSUSE=11.1
Debian Debian Linux=4.0
Debian Debian Linux=5.0
Ubuntu Linux=6.06
Ubuntu Linux=8.04
Ubuntu Linux=8.10
Ubuntu Linux=9.04
VMware ESX=2.5.5
VMware ESX=3.0.3
VMware ESX=3.5
VMware ESX=4.0

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