CVE-2020-26271 - log back

CVE-2020-26271 edited at 15 Dec 2020 13:31:52
References
https://github.com/tensorflow/tensorflow/security/advisories/GHSA-q263-fvxm-m5mw
- https://github.com/tensorflow/tensorflow/commit/0cc38aaa4064fd9e79101994ce9872c6d91f816b
+ https://github.com/tensorflow/tensorflow/commit/7664e65c2c0fcda6b9d833acbb1b77c5d32e0555
CVE-2020-26271 edited at 11 Dec 2020 14:07:19
Severity
- Unknown
+ High
Remote
- Unknown
+ Local
Type
- Unknown
+ Information disclosure
Description
+ In affected versions of TensorFlow under certain cases, loading a saved model can result in accessing uninitialized memory while building the computation graph. The MakeEdge function creates an edge between one output tensor of the src node (given by output_index) and the input slot of the dst node (given by input_index). This is only possible if the types of the tensors on both sides coincide, so the function begins by obtaining the corresponding DataType values and comparing these for equality. However, there is no check that the indices point to inside of the arrays they index into. Thus, this can result in accessing data out of bounds of the corresponding heap allocated arrays. In most scenarios, this can manifest as unitialized data access, but if the index points far away from the boundaries of the arrays this can be used to leak addresses from the library. This is fixed in versions 1.15.5, 2.0.4, 2.1.3, 2.2.2, 2.3.2, and 2.4.0.
References
+ https://github.com/tensorflow/tensorflow/security/advisories/GHSA-q263-fvxm-m5mw
+ https://github.com/tensorflow/tensorflow/commit/0cc38aaa4064fd9e79101994ce9872c6d91f816b
Notes
CVE-2020-26271 created at 11 Dec 2020 13:58:53