#VU49324 Use of uninitialized resource in TensorFlow - CVE-2020-26266
Published: December 11, 2020 / Updated: January 7, 2021
Vulnerability identifier: #VU49324
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2020-26266
CWE-ID: CWE-908
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
TensorFlow
TensorFlow
Software vendor:
TensorFlow
TensorFlow
Description
The vulnerability allows a local user to bypass certain security restrictions.
The vulnerability exists due to usage of uninitialized resources in Eigen. Under certain cases a saved model can trigger use of uninitialized values during code execution. This is caused by having tensor buffers be filled with the default value of the type but forgetting to default initialize the quantized floating point types in Eigen.
Remediation
Install updates from vendor's website.
External links
- https://github.com/tensorflow/tensorflow/commit/ace0c15a22f7f054abcc1f53eabbcb0a1239a9e2
- https://github.com/tensorflow/tensorflow/security/advisories/GHSA-qhxx-j73r-qpm2
- https://github.com/tensorflow/tensorflow/releases/tag/v2.3.2
- https://github.com/tensorflow/tensorflow/releases/tag/v2.2.2
- https://github.com/tensorflow/tensorflow/releases/tag/v2.1.3
- https://github.com/tensorflow/tensorflow/releases/tag/v2.0.4
- https://github.com/tensorflow/tensorflow/releases/tag/v1.15.5