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Insecure Library Loading
Highly critical

EasyMail Objects IMAP4 and SMTP Components Buffer Overflows

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Release Date:  2007-02-16    Last Update:  2010-03-08    Views:  15,469

Secunia Advisory SA24199

Where:

From remote

Impact:

System access

Solution Status:

Vendor Patch

CVE Reference(s):

Description


Some vulnerabilities have been reported in EasyMail Objects, which can be exploited by malicious people to compromise a user's system.

1) A boundary error exists within the IMAP4 component of EasyMail Objects when processing arguments passed to the "Connect" method. This can be exploited to cause a stack-based buffer overflow via an overly long (greater than 500 bytes) string passed as the host name argument to the said method.

2) A boundary error exists within the SMTP component of EasyMail Objects when processing arguments passed to the "SubmitToExpress()" method. This can be exploited to cause a stack-based buffer overflow by passing an overly long argument to the affected method.

3) A boundary error exists in the EasyMail.IMAP4.6 ActiveX control (emimap4.dll) when handling the "LicenseKey" property. This can be exploited to cause a stack-based buffer overflow by assigning an overly long string to the "LicenseKey" property.

4) A boundary error exists in the EasyMail.SMTP.6 ActiveX control (emsmtp.dll) when handling calls to the "AddAttachment()" method. This can be exploited to cause a stack-based buffer overflow by passing an overly long argument to the affected method.

Vulnerabilities #2 through #4 are confirmed in emsmtp.dll and emimap4.dll version 6.0.2.0. Other versions may also be affected.

Successful exploitation allows execution of arbitrary code and requires that the user is e.g. tricked into visiting a malicious web site.


Solution:
Update to version 6.5.

Provided and/or discovered by:
1) Paul Craig, Security-Assessment.com
2) Independently discovered by rgod and Will Dormann of the CERT/CC
3) Francis Provencher (Protek Research Lab's)
4) bmgsec

Original Advisory:
1) Security-Assessment.com:
http://security-assessment.com/files/advisories/easymail_advisory.pdf

2) http://milw0rm.com/exploits/4328
3) http://milw0rm.com/exploits/9684
4) http://www.bmgsec.com.au/advisory/48/

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: EasyMail Objects IMAP4 and SMTP Components Buffer Overflows

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