CVE-2011-2724 Information

Description

The check_mtab function in client/mount.cifs.c in mount.cifs in smbfs in Samba 3.5.10 and earlier does not properly verify that the (1) device name and (2) mountpoint strings are composed of valid characters which allows local users to cause a denial of service (mtab corruption) via a crafted string. NOTE: this vulnerability exists because of an incorrect fix for CVE-2010-0547.

Reference

http://comments.gmane.org/gmane.linux.kernel.cifs/3827 http://git.samba.org/?p=cifs-utils.git;a=commit;h=1e7a32924b22d1f786b6f490ce8590656f578f91 http://openwall.com/lists/oss-security/2011/07/29/9 http://secunia.com/advisories/45798 http://www.mandriva.com/security/advisories?name=MDVSA-2011:148 http://www.redhat.com/support/errata/RHSA-2011-1220.html http://www.redhat.com/support/errata/RHSA-2011-1221.html http://www.securitytracker.com/id?1025984 https://bugzilla.redhat.com/show_bug.cgi?id=726691