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Security Advisories


Moxa’s Response Regarding the OpenSSL X.509 Email Address 4-byte Buffer Overflow Vulnerability (CVE-2022-3602)

  • Security Advisory ID: MPSA-221101
  • Version: V1.0
  • Release Date: Nov 04, 2022
  • Reference:

A buffer overrun can be triggered in X.509 certificate verification, specifically in name constraint checking. This occurs after the certificate chain signature verification and requires either a CA to have signed the malicious certificate or for the application to continue certificate verification despite failing to construct a path to a trusted issuer. An attacker can craft a malicious email address to overflow four attacker-controlled bytes on the stack. This buffer overflow could result in a crash (causing a denial of service) or potentially remote code execution.

Moxa has completed our review and determined that none of our products are impacted by this vulnerability.


Affected Products:

Moxa has determined that none of our products are affected.

Revision History:

1.0 First Release Nov 04, 2022
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