CVE-2009-4411 Information

Description

The (1) setfacl and (2) getfacl commands in XFS acl 2.2.47 when running in recursive (-R) mode follow symbolic links even when the –physical (aka -P) or -L option is specified which might allow local users to modify the ACL for arbitrary files or directories via a symlink attack.

Reference

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=499076 http://git.savannah.gnu.org/cgit/acl.git/commit/?id=63451a0 http://lists.opensuse.org/opensuse-security-announce/2010-02/msg00000.html http://oss.sgi.com/bugzilla/show_bug.cgi?id=790 http://osvdb.org/61302 http://secunia.com/advisories/37907 http://secunia.com/advisories/38420 http://www.mandriva.com/security/advisories?name=MDVSA-2009:345 http://www.openwall.com/lists/oss-security/2009/12/23/2 http://www.securityfocus.com/bid/37455 https://exchange.xforce.ibmcloud.com/vulnerabilities/55004