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Heap buffer overflow in `UnsortedSegmentSum`

Low
mihaimaruseac published GHSA-844w-j86r-4x2j Dec 16, 2019

Package

tensorflow, tensorflow-cpu, tensorflow-gpu (tensorflow)

Affected versions

< 1.15

Patched versions

1.15, 2.0 and later

Description

Impact

A heap buffer overflow in UnsortedSegmentSum can be produced when the Index template argument is int32. In this case data_size and num_segments fields are truncated from int64 to int32 and can produce negative numbers, resulting in accessing out of bounds heap memory.

This is unlikely to be exploitable and was detected and fixed internally. We are making the security advisory only to notify users that it is better to update to TensorFlow 1.15 or 2.0 or later as these versions already have this fixed.

Patches

Patched by db4f971 and released in all official releases after 1.15 and 2.0.

For more information

Please consult SECURITY.md for more information regarding the security model and how to contact us with issues and questions.

Severity

Low

CVE ID

CVE-2019-16778

Weaknesses

No CWEs