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Rockwell Automation 1783-NATR

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1. EXECUTIVE SUMMARY

  • CVSS v4 6.9
  • ATTENTION: Exploitable remotely/low attack complexity
  • Vendor: Rockwell Automation
  • Equipment: 1783-NATR
  • Vulnerability: Use of Platform-Dependent Third Party Components

2. RISK EVALUATION

Successful exploitation of this vulnerability could allow an attacker to cause a memory corruption on the product.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following versions of Rockwell Automation 1783-NATR are affected:

  • 1783-NATR: All versions prior to 1.007

3.2 VULNERABILITY OVERVIEW

3.2.1 USE OF PLATFORM-DEPENDENT THIRD PARTY COMPONENTS CWE-1103

In Wind River VxWorks, memory allocator has a possible overflow in calculating the memory block’s size to be allocated by calloc(). As a result, the actual memory allocated is smaller than the buffer size specified by the arguments, leading to memory corruption.

CVE-2020-28895 has been assigned to this vulnerability. A CVSS v3.1 base score of 7.3 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L).

A CVSS v4 score has also been calculated for CVE-2020-28895. A base score of 6.9 has been calculated; the CVSS vector string is (AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N).

3.3 BACKGROUND