CVE-2023-27912 - Out-of-bounds Read

Severity

78%

Complexity

18%

Confidentiality

98%

A maliciously crafted X_B file when parsed through Autodesk® AutoCAD® 2023 can force an Out-of-Bound Read. A malicious actor can leverage this vulnerability to cause a crash or read sensitive data or execute arbitrary code in the context of the current process.

CVSS 3.1 Base Score 7.8. CVSS Attack Vector: local. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).

Demo Examples

Out-of-bounds Read

CWE-125

In the following code, the method retrieves a value from an array at a specific array index location that is given as an input parameter to the method


               
}
return value;// check that the array index is less than the maximum// length of the array
value = array[index];// get the value at the specified index of the array
// if array index is invalid then output error message// and return value indicating error
value = -1;

However, this method only verifies that the given array index is less than the maximum length of the array but does not check for the minimum value (CWE-839). This will allow a negative value to be accepted as the input array index, which will result in a out of bounds read (CWE-125) and may allow access to sensitive memory. The input array index should be checked to verify that is within the maximum and minimum range required for the array (CWE-129). In this example the if statement should be modified to include a minimum range check, as shown below.


               
...// check that the array index is within the correct// range of values for the array

Overview

Type

Autodesk

First reported 1 year ago

2023-04-14 19:15:00

Last updated 1 year ago

2023-04-20 16:06:00

Affected Software

Autodesk AutoCAD

Autodesk AutoCAD Mechanical

Autodesk AutoCAD LT

Autodesk AutoCAD Electrical

Autodesk Building Civil 3D

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