CVE-2020-26271
Severity CVSS v4.0:
Pending analysis
Type:
CWE-125
Out-of-bounds Read
Publication date:
10/12/2020
Last modified:
14/12/2020
Description
In affected versions of TensorFlow under certain cases, loading a saved model can result in accessing uninitialized memory while building the computation graph. The MakeEdge function creates an edge between one output tensor of the src node (given by output_index) and the input slot of the dst node (given by input_index). This is only possible if the types of the tensors on both sides coincide, so the function begins by obtaining the corresponding DataType values and comparing these for equality. However, there is no check that the indices point to inside of the arrays they index into. Thus, this can result in accessing data out of bounds of the corresponding heap allocated arrays. In most scenarios, this can manifest as unitialized data access, but if the index points far away from the boundaries of the arrays this can be used to leak addresses from the library. This is fixed in versions 1.15.5, 2.0.4, 2.1.3, 2.2.2, 2.3.2, and 2.4.0.
Impact
Base Score 3.x
3.30
Severity 3.x
LOW
Base Score 2.0
2.10
Severity 2.0
LOW
Vulnerable products and versions
| CPE | From | Up to |
|---|---|---|
| cpe:2.3:a:google:tensorflow:*:*:*:*:*:*:*:* | 1.15.5 (excluding) | |
| cpe:2.3:a:google:tensorflow:*:*:*:*:*:*:*:* | 2.0.0 (including) | 2.0.4 (excluding) |
| cpe:2.3:a:google:tensorflow:*:*:*:*:*:*:*:* | 2.1.0 (including) | 2.1.3 (excluding) |
| cpe:2.3:a:google:tensorflow:*:*:*:*:*:*:*:* | 2.2.0 (including) | 2.2.2 (excluding) |
| cpe:2.3:a:google:tensorflow:*:*:*:*:*:*:*:* | 2.3.0 (including) | 2.3.2 (excluding) |
To consult the complete list of CPE names with products and versions, see this page