TippingPoint Zero Day Initiative
 

Mitsubishi Electric E-Designer SetupAlarm Font Property Stack-based Buffer Overflow Remote Code Execution Vulnerability

ZDI-17-508: August 1st, 2017

CVE ID

CVSS Score

Affected Vendors

    Mitsubishi Electric

Affected Products

    E-Designer

Vulnerability Details


This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Mitsubishi Electric E-Designer. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within processing of SetupAlarm sections of a mpa (project specification) file. When parsing the property Font, the process fails to properly validate the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute arbitrary code in the context of the Administrator.

Vendor Response

Mitsubishi Electric has issued an update to correct this vulnerability. More details can be found at:

Disclosure Timeline

    2016-05-31 - Vulnerability reported to vendor
    2017-08-01 - Coordinated public release of advisory

Credit

This vulnerability was discovered by:
    rgod