SMTP: EXPN Command
This protocol anomaly triggers when it detects an attempt to use the EXPN command. This command is not used by most standard clients and servers and can reveal information about e-mail accounts.
Extended Description
Receiving a SMTP EXPN command could indicate a non-standard SMTP implementation, a configuration error or that an attacker is attempting to gather information about a server to plan an attack.
Short Name
SMTP:COMMAND:EXPN
Severity
Minor
Recommended
False
Recommended Action
None
Category
SMTP
Keywords
CVE-1999-0096
Release Date
08/27/2003
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
CVSS Score
5.0