CVE-2020-26267

Advisory

Tensorflow-directml 1.15.5 includes a fix for CVE-2020-26267: In affected versions of TensorFlow the tf.raw_ops.DataFormatVecPermute API does not validate the src_format and dst_format attributes. The code assumes that these two arguments define a permutation of NHWC. This can result in uninitialized memory accesses, read outside of bounds and even crashes. This is fixed in versions 1.15.5, 2.0.4, 2.1.3, 2.2.2, 2.3.2, and 2.4.0.

Affected package

Affected versions

Fixed versions

Vulnerability changelog

Note that this is the last patch release for the TensorFlow 1.x series.

Bug Fixes and Other Changes
* Fixes an access to unitialized memory in Eigen code
([CVE-2020-26266](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-26266))
* Fixes a security vulnerability caused by lack of validation in
`tf.raw_ops.DataFormatVecPermute` and `tf.raw_ops.DataFormatDimMap`
([CVE-2020-26267](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-26267))
* Fixes a vulnerability caused by attempting to write to immutable memory region in
`tf.raw_ops.ImmutableConst`
([CVE-2020-26268](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-26268)
* Fixes a `CHECK`-fail in LSTM with zero-length input
([CVE-2020-26270](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-26270))
* Fixes a security vulnerability caused by accessing heap data outside of bounds
when loading a specially crafted `SavedModel`
([CVE-2020-26271](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-26271))
* Updates `libjpeg-turbo` to `2.0.5` to handle
[CVE-2020-13790](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-13790).
* Updates `junit` to `4.13.1` to handle
[CVE-2020-15250](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-15250).
* Updates `PCRE` to `8.44` to handle
[CVE-2019-20838](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-20838)
and
[CVE-2020-14155](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-14155).
* Updates `sqlite3` to `3.44.0` to keep in sync with master branch.

Resources

• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-26267
• https://github.com/tensorflow/tensorflow/commit/ebc70b7a592420d3d2f359e4b1694c236b82c7ae
• https://github.com/tensorflow/tensorflow/security/advisories/GHSA-c9f3-9wfr-wgh7