Evaluator Impact

This Common Vulnerabilities and Exposures (CVE) entry is a configuration issue and not a software flaw. As such, it doesn’t fit in the CVE software flaw list. The Common Vulnerability Scoring System (CVSS) base score for this CVE entry has been set to 0 because this CVE entry has no impact as a software flaw according to CVSS. This does not mean that the configuration issue is not important and there may be security implications relative to computers having this configuration.

Evaluator Solution

This functionality should be disabled, because these commands can be used for attack reconnaissance.

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving NIST webspace. We have provided these links to other web sites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other web sites that are more appropriate for your purpose. NIST does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, NIST does not endorse any commercial products that may be mentioned on these sites. Please address comments about this page to nvd@nist.gov.

Change History

** REJECT **  DO NOT USE THIS CANDIDATE NUMBER.  ConsultIDs: None.  Reason: this candidate is solely about a configuration that does not directly introduce security vulnerabilities, so it is more appropriate to cover under the Common Configuration Enumeration (CCE).  Notes: the former description is: "An SMTP service supports EXPN, VRFY, HELP, ESMTP, and/or EHLO."

Rejected reason: DO NOT USE THIS CANDIDATE NUMBER.  ConsultIDs: None.  Reason: this candidate is solely about a configuration that does not directly introduce security vulnerabilities, so it is more appropriate to cover under the Common Configuration Enumeration (CCE).  Notes: the former description is: "An SMTP service supports EXPN, VRFY, HELP, ESMTP, and/or EHLO.