Signature Detail
Short Name |
SMB:NETBIOS:INV-CDNAME-LEN |
|---|---|
Severity |
High |
Recommended |
No |
Category |
SMB |
Release Date |
2003/04/22 |
Update Number |
1213 |
Supported Platforms |
di-5.3+, idp-4.0+, isg-3.0+, j-series-9.5+, mx-9.4+, srx-9.2+, srx-branch-9.4+, vsrx-12.1+ |
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.
References