 |
Home ▼ Bookkeeping
Online ▼ Security
Audits ▼
Managed
DNS ▼
About
Order
FAQ
Acceptable Use Policy
Dynamic DNS Clients
Configure Domains Dyanmic DNS Update Password Network
Monitor ▼
Enterprise Package
Advanced Package
Standard Package
Free Trial
FAQ
Price/Feature Summary
Order/Renew
Examples
Configure/Status Alert Profiles | ||
| Test ID: | 1.3.6.1.4.1.25623.1.0.100072 |
| Category: | SMTP problems |
| Title: | Check if Mailserver answer to VRFY and EXPN requests |
| Summary: | The Mailserver on this host answers to VRFY and/or EXPN requests. |
| Description: | Summary: The Mailserver on this host answers to VRFY and/or EXPN requests. Vulnerability Insight: VRFY and EXPN ask the server for information about an address. They are inherently unusable through firewalls, gateways, mail exchangers for part-time hosts, etc. Solution: Disable VRFY and/or EXPN on your Mailserver. For postfix add 'disable_vrfy_command=yes' in 'main.cf'. For Sendmail add the option 'O PrivacyOptions=goaway'. It is suggested that, if you really want to publish this type of information, you use a mechanism that legitimate users actually know about, such as Finger or HTTP. CVSS Score: 5.0 CVSS Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P |
| Copyright | Copyright (C) 2009 Greenbone AG |
| This is only one of 145615 vulnerability tests in our test suite. Find out more about running a complete security audit. To run a free test of this vulnerability against your system, register below. |