CVE-2020-15209

Summary

In tensorflow-lite before versions 1.15.4, 2.0.3, 2.1.2, 2.2.1 and 2.3.1, a crafted TFLite model can force a node to have as input a tensor backed by a nullptr buffer. This can be achieved by changing a buffer index in the flatbuffer serialization to convert a read-only tensor to a read-write one. The runtime assumes that these buffers are written to before a possible read, hence they are initialized with nullptr. However, by changing the buffer index for a tensor and implicitly converting that tensor to be a read-write one, as there is nothing in the model that writes to it, we get a null pointer dereference. The issue is patched in commit 0b5662bc, and is released in TensorFlow versions 1.15.4, 2.0.3, 2.1.2, 2.2.1, or 2.3.1.

Affected Software

VendorProductVersion RangeStatus
tensorflowtensorflow< 1.15.4affected
tensorflowtensorflow>= 2.0.0, < 2.0.3affected
tensorflowtensorflow>= 2.1.0, < 2.1.2affected
tensorflowtensorflow>= 2.2.0, < 2.2.1affected
tensorflowtensorflow>= 2.3.0, < 2.3.1affected

Weaknesses

  • CWE-476: {"CWE-476":"NULL Pointer Dereference"}

ADP Enrichment

CVE Program Container

Additional References

References