CVE-2009-1630 Information

Description

The nfs_permission function in fs/nfs/dir.c in the NFS client implementation in the Linux kernel 2.6.29.3 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.

Reference

http://article.gmane.org/gmane.linux.nfs/26592 http://bugzilla.linux-nfs.org/show_bug.cgi?id=131 http://linux-nfs.org/pipermail/nfsv4/2006-November/005313.html http://linux-nfs.org/pipermail/nfsv4/2006-November/005323.html http://lists.opensuse.org/opensuse-security-announce/2009-06/msg00001.html http://lists.opensuse.org/opensuse-security-announce/2009-07/msg00004.html http://secunia.com/advisories/35106 http://secunia.com/advisories/35298 http://secunia.com/advisories/35394 http://secunia.com/advisories/35656 http://secunia.com/advisories/35847 http://secunia.com/advisories/36051 http://secunia.com/advisories/36327 http://secunia.com/advisories/37471 http://wiki.rpath.com/Advisories:rPSA-2009-0111 http://www.debian.org/security/2009/dsa-1809 http://www.debian.org/security/2009/dsa-1844 http://www.debian.org/security/2009/dsa-1865 http://www.mandriva.com/security/advisories?name=MDVSA-2009:135 http://www.mandriva.com/security/advisories?name=MDVSA-2009:148 http://www.openwall.com/lists/oss-security/2009/05/13/2 http://www.redhat.com/support/errata/RHSA-2009-1157.html http://www.securityfocus.com/archive/1/505254/100/0/threaded http://www.securityfocus.com/archive/1/507985/100/0/threaded http://www.securityfocus.com/bid/34934 http://www.ubuntu.com/usn/usn-793-1 http://www.vmware.com/security/advisories/VMSA-2009-0016.html http://www.vupen.com/english/advisories/2009/1331 http://www.vupen.com/english/advisories/2009/3316 https://bugzilla.redhat.com/show_bug.cgi?id=500297 https://oval.cisecurity.org/repository/search/definition/oval3Aorg.mitre.oval3Adef3A8543 https://oval.cisecurity.org/repository/search/definition/oval3Aorg.mitre.oval3Adef3A9990