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CVE-2021-37678 - log back

CVE-2021-37678 created at 13 Aug 2021 07:57:57
Severity	+ Critical
Remote	+ Local
Type	+ Arbitrary code execution
Description	+ In TensorFlow before version 2.6.0 TensorFlow and Keras can be tricked to perform arbitrary code execution when deserializing a Keras model from YAML format. The implementation uses yaml.unsafe_load which can perform arbitrary code execution on the input. Given that YAML format support requires a significant amount of work, it has been removed it for now.
References	+ https://github.com/tensorflow/tensorflow/security/advisories/GHSA-r6jx-9g48-2r5r + https://github.com/tensorflow/tensorflow/commit/23d6383eb6c14084a8fc3bdf164043b974818012
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