CVE-2021-29544 - log back

CVE-2021-29544 edited at 14 May 2021 21:46:48
Type
- Unknown
+ Denial of service
CVE-2021-29544 edited at 14 May 2021 21:30:47
Severity
- Unknown
+ Low
Remote
- Unknown
+ Local
Description
+ A security issue has been found in TensorFlow before version 2.4.2. An attacker can trigger a denial of service via a `CHECK`-fail in `tf.raw_ops.QuantizeAndDequantizeV4Grad`. This is because the implementation(https://github.com/tensorflow/tensorflow/blob/95078c145b5a7a43ee046144005f733092756ab5/tensorflow/core/kernels/quantize_and_dequantize_op.cc#L162-L163) does not validate the rank of the `input_*` tensors. In turn, this results in the tensors being passes as they are to `QuantizeAndDequantizePerChannelGradientImpl`(https://github.com/tensorflow/tensorflow/blob/95078c145b5a7a43ee046144005f733092756ab5/tensorflow/core/kernels/quantize_and_dequantize_op.h#L295-L306). However, the `vec<T>` method, requires the rank to 1 and triggers a `CHECK` failure otherwise.
References
+ https://github.com/tensorflow/tensorflow/security/advisories/GHSA-6g85-3hm8-83f9
+ https://github.com/tensorflow/tensorflow/commit/20431e9044cf2ad3c0323c34888b192f3289af6b
CVE-2021-29544 created at 14 May 2021 20:37:16
Severity
+ Unknown
Remote
+ Unknown
Type
+ Unknown
Description
References
Notes