Samba < 3.0.35 / 3.2.13 / 3.3.6 Multiple Vulnerabilities
Low Nessus Plugin ID 39502
SynopsisThe remote Samba server may be affected by a security bypass vulnerability.
DescriptionAccording to its version number, the version of Samba running on the remote host has a security bypass vulnerability. Access restrictions can be bypassed due to a read of uninitialized data in smbd. This could allow a user to modify an access control list (ACL), even when they should be denied permission.
Note the 'dos filemode' parameter must be set to 'yes' in smb.conf in order for an attack to be successful (the default setting is 'no').
Also note versions 3.2.0 - 3.2.12 of smbclient are affected by a format string vulnerability, though Nessus has not checked for this.
SolutionUpgrade to Samba version 3.3.6 / 3.2.13 / 3.0.35 or later, or apply the appropriate patch referenced in the vendor's advisory.