Signature Detail

Short Name	FTP:OVERFLOW:USERNAME-2-LONG
Severity	High
Recommended	Yes
Recommended Action	Drop
Category	FTP
Keywords	ftp
Release Date	2003/08/27
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+

FTP: Username Too Long

This protocol anomaly is a username in an FTP connection that exceeds the length threshold. This can be an attempt to overflow the server. Default value: 32. You can set the FTP username length threshold to a higher or lower value. In IDP Manager: Select a security policy from Security Policies, then select the Sensor Settings tab. Select Protocol Thresholds and Configuration > FTP. In Netscreen-Security Manager: In the device navigation tree select Security > IDP SM Settings, then select the Protocol Thresholds and Configuration tab. Under FTP, click the Show button. Set the Maximum Username length to the new value and click OK.

Extended Description

Such conditions could indicate a configuration or implementation error, or it could indicate that an attack against FTP servers or clients is underway.

Signature Detail

Short Name

Severity

Recommended

Recommended Action

Category

Keywords

Release Date

Update Number

Supported Platforms

FTP: Username Too Long

Extended Description

References