From: Security Advisories (Security-Advisoriesacs-inc.com)
Date: Tue Dec 20 2005 - 03:30:05 CST

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-=[+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++]=-
ACS Security Assessment Advisory - Format String Overflow

ID: ACSSEC-2005-11-25 - 0x6

Class: Format String Overflow
Package: FTGate 4.4 [Build 4.4.000 Oct 26 2005] IMAPd Service
Build: Windows NT/2k/XP/2k3
Notified: Dec 01, 2005
Released: Dec 20, 2005

Remote: Yes
Severity: Low

Credit: Tim Shelton <security-advisoriesacs-inc.com>
-=[+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++]=-

-=[ Background

FTGate4 is a powerful Windows(TM) communication suite that combines
exceptional mail handling facilities with comprehensive Groupware
functionality. Its security and collaboration features were developed
in conjunction with leading ISP's and define a new era in mail server
performance.

-=[ Technical Description

FTGate 4.4 [Build 4.4.000 Oct 26 2005] is vulnerable to multiple format
string overflows via specially crafted imap requests. A remote attacker
could issue the vulnerable command followed by a malicious code to execute
arbitrary code.

-=[ Proof of Concepts

IMAP 01 LIST (%25n times 1024) *
IMAP 02 AUTHENTICATE (%25n times 1024)

-=[ Solution
No remedy available as of December 2005.

-=[ Credits

Vulnerability originally reported by Tim Shelton

-=[ ChangeLog

2005-11-25 : Original Advisory
2005-12-01 : Notified Vendor
2005-12-20 : No response from vendor, disclosing full information.

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