Description
CommuniCrypt Mail versions up to and including 1.16 contains a stack-based buffer overflow vulnerability in its ANSMTP.dll and AOSMTP.dll ActiveX controls, specifically within the AddAttachments() method. This method fails to properly validate the length of input strings, allowing data to exceed the bounds of a fixed-size stack buffer. When invoked with an overly long string, the control can corrupt adjacent memory structures, including exception handlers, leading to potential control flow disruption.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
CommuniCrypt Software CommuniCrypt Mail
Default version status: unaffected
0 to ≤ 1.16affected
References
- https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/browser/communicrypt_mail_activex.rb ↗
- https://www.exploit-db.com/exploits/12663 ↗
- https://www.broadcom.com/support/security-center/attacksignatures/detail?asid=24374 ↗
- https://softwarelode.com/4185/details-communicrypt-mail.html ↗
- https://www.fortiguard.com/encyclopedia/ips/23099 ↗
- https://www.vulncheck.com/advisories/communicrypt-mail-activex-control-buffer-overflow ↗