Title: Multiple Vendor SMTP Attachment Protection Bypass Vulnerability
Severity: HIGH
Description:
At least two SMTP gateway products have been identified which contain flaws in the handling of restricted filetypes as attachments.
An attacker can insert extraneous characters in the filename extension of a hostile attachment.
The affected gateway will fail to detect the modified extension. Since Microsoft Outlook removes illegal characters in extensions, without notifying the user, the hostile attachment is delivered to the end user with its normal, working extension intact.
This could allow the file to be mistakenly double-clicked and executed, running any malicious code it may contain.
Affected Products:
- Softek MailMarshal 4.0.0
- Softek MailMarshal 4.1.0
- Softek MailMarshal 4.2.0
- Trend Micro ScanMail 1.0.0
References:
- SecuriTeam.com: SMTP Gateway Attachment Bypass Exploit
Juniper Networks provides this content via a wide variety of sources and production methods. If notified of errors or omissions in the content of this page, Juniper Networks, at its discretion, will modify or remove the page or leave the content as is, depending on various factors including but not limited to the reputation and authority of the party providing the notification. Please use the contact information displayed elsewhere on this page to report any errors or omissions regarding the content on this page.
