CVE-2020-5215
Converting a string (from Python) to a tf.float16 value results in a
segmentation fault in eager mode as the format checks for this use case are only
in the graph mode.
This issue can lead to denial of service in inference/training where a malicious
attacker can send a data point which contains a string instead of a tf.float16
value.
Similar effects can be obtained by manipulating saved models and checkpoints
whereby replacing a scalar tf.float16 value with a scalar string will trigger
this issue due to automatic conversions.
This can be easily reproduced by tf.constant("hello", tf.float16), if eager
execution is enabled.
TensorFlow 1.12.0, 1.12.1, 1.12.2, 1.12.3, 1.13.0, 1.13.1, 1.13.2, 1.14.0, 1.15.0, 2.0.0.
We have patched the vulnerability in GitHub commit 5ac1b9.
We are additionally releasing TensorFlow 1.15.2 and 2.0.1 with this vulnerability patched.
TensorFlow 2.1.0 was released after we fixed the issue, thus it is not affected.
We encourage users to switch to TensorFlow 1.15.2, 2.0.1 or 2.1.0.