SMB: Invalid Called Name Length
This protocol anomaly is an invalid called name length in the NETBIOS header that encapsulates an SMB. NETBIOS names are 16 bytes and can encode to a maximum of 34 bytes.
Extended Description
A NetBIOS header that contains a called (remote) name field that is less than 16 bytes or greater than 34 bytes constitutes a protocol anomaly. This condition could indicate a network configuration error, or that a malicious attack involving the injection of malformed NetBIOS datagrams is underway.
Short Name
SMB:NETBIOS:INV-CDNAME-LEN
Severity
Major
Recommended
False
Recommended Action
None
Category
SMB
Release Date
04/22/2003
Supported Platforms
srx-branch-12.3
srx-19.3
srx-branch-19.3
vsrx3bsd-19.2
srx-branch-19.4
vsrx-19.4
mx-12.3
mx-19.4
vmx-19.4
mx-19.3
vsrx3bsd-19.4
srx-19.4
vsrx-12.3
vmx-19.3
vsrx-19.2
srx-12.3
Sigpack Version
3324
False Positive
Unknown