""GPL SMTP EXPN overflow attempt""

SID: 2102259

Revision: 9

Class Type: attempted-admin

Metadata: created_at 2010_09_23, cve CVE_2002_1337, updated_at 2013_05_02

Reference:

  • cve

  • 2003-0161

Protocol: tcp

Source Network: $EXTERNAL_NET

Source Port: any

Destination Network: $SMTP_SERVERS

Destination Port: 25

Flow: to_server,established

Contents:

  • Value: "EXPN"

  • Value: !"|0a|"

Within: 255

PCRE: "/^EXPN[^\n]{255}/smi"

Special Options:

  • nocase

source