MailScanner SMTP ETRN Scanner Bypass Vulnerability

BID:6504

Info

MailScanner SMTP ETRN Scanner Bypass Vulnerability

Bugtraq ID: 6504
Class: Failure to Handle Exceptional Conditions
CVE:
Remote: Yes
Local: No
Published: Dec 18 2002 12:00AM
Updated: Dec 18 2002 12:00AM
Credit: This issue was announced by the vendor in the changelog.
Vulnerable: MailScanner MailScanner 4.0 5-3
MailScanner MailScanner 4.0 5-2
MailScanner MailScanner 4.0 5-1
MailScanner MailScanner 4.0 4-1
MailScanner MailScanner 4.0 3-1
MailScanner MailScanner 4.0 2-3
MailScanner MailScanner 4.0 2-2
MailScanner MailScanner 4.0 2-1
MailScanner MailScanner 3.2 6-2
MailScanner MailScanner 3.2 6-1
MailScanner MailScanner 3.2 5-1
MailScanner MailScanner 3.2 4-1
MailScanner MailScanner 3.2 3-5
MailScanner MailScanner 3.2 3-4
MailScanner MailScanner 3.2 3-3
MailScanner MailScanner 3.2 3-2
MailScanner MailScanner 3.2 3-1
Not Vulnerable: MailScanner MailScanner 4.11 -1
MailScanner MailScanner 3.27 -1

Discussion

MailScanner SMTP ETRN Scanner Bypass Vulnerability

MailScanner may potentially be bypassed if the mail server is under heavy load and if SMTP ETRN commands are permitted.

This condition reportedly occurs when MailScanner is deployed on an overworked mail server. Messages in the incoming mail queue will not be processed by MailScanner. This may cause malicious e-mail in the queue to bypass MailScanner.

Exploit / POC

MailScanner SMTP ETRN Scanner Bypass Vulnerability

Currently we are not aware of any exploits for this issue. If you feel we are in error or are aware of more recent information, please mail us at: [email protected] <mailto:[email protected]>.

Solution / Fix

MailScanner SMTP ETRN Scanner Bypass Vulnerability

Solution:
The vendor has addressed this issue in versions 3.27-1 and 4.11-1.


MailScanner MailScanner 3.2 5-1

MailScanner MailScanner 3.2 3-4

MailScanner MailScanner 3.2 4-1

MailScanner MailScanner 3.2 3-1

MailScanner MailScanner 3.2 3-3

MailScanner MailScanner 3.2 6-1

MailScanner MailScanner 3.2 3-5

MailScanner MailScanner 3.2 6-2

MailScanner MailScanner 3.2 3-2

MailScanner MailScanner 4.0 2-3

MailScanner MailScanner 4.0 5-2

MailScanner MailScanner 4.0 3-1

MailScanner MailScanner 4.0 4-1

MailScanner MailScanner 4.0 5-1

MailScanner MailScanner 4.0 2-1

MailScanner MailScanner 4.0 5-3

MailScanner MailScanner 4.0 2-2

References

MailScanner SMTP ETRN Scanner Bypass Vulnerability

References:

© CVE.report 2026

Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

Free CVE JSON API cve.report/api

CVE.report and Source URL Uptime Status status.cve.report