Title: McAfee Webshield SMTP Remote Format String Vulnerability
Severity: CRITICAL
Description:
McAfee WebShield SMTP is a gateway product designed to parse and scan incoming email for malicious content, including virus and worm attachments.
McAfee WebShield SMTP is susceptible to a remote format-string vulnerability. The application fails to properly sanitize user-supplied input before including it in a format-specifier argument to a formatted-printing function.
This issue presents itself when the application tries to create bounce messages for nonexistent domains. An email message containing format-specifier sequences in the destination address sent to a nonexistent domain will result in an outgoing spool file being created. During the processing of the spool file to create bounce messages, the original destination address is improperly sanitized before using it in a formatted-printing function.
As a result, attacker-supplied data is improperly used in the format-specifier argument of a formatted-printing function, allowing the attacker to write to arbitrary memory locations and then influence the application's execution flow.
This issue allows remote attackers to execute arbitrary machine code in the context of the affected application.
Affected Products:
- McAfee WebShield SMTP 4.5 MR1a
References:
- McAfee: McAfee WebShield SMTP Home Page
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