CVE-2020-15193
September 25, 2020
In Tensorflow before versions 2.2.1 and 2.3.1, the implementation of "dlpack.to_dlpack" can be made to use uninitialized memory resulting in further memory corruption. This is because the pybind11 glue code assumes that the argument is a tensor. However, there is nothing stopping users from passing in a Python object instead of a tensor. The uninitialized memory address is due to a "reinterpret_cast" Since the "PyObject" is a Python object, not a TensorFlow Tensor, the cast to "EagerTensor" fails. The issue is patched in commit 22e07fb204386768e5bcbea563641ea11f96ceb8 and is released in TensorFlow versions 2.2.1, or 2.3.1.
Affected Packages
tensorflow (PYTHON):
Affected version(s) =2.2.0 <2.2.1Fix Suggestion:
Update to version 2.2.1tensorflow-cpu (PYTHON):
Affected version(s) =2.2.0 <2.2.1Fix Suggestion:
Update to version 2.2.1tensorflow-gpu (PYTHON):
Affected version(s) =2.3.0 <2.3.1Fix Suggestion:
Update to version 2.3.1tensorflow (PYTHON):
Affected version(s) =2.3.0 <2.3.1Fix Suggestion:
Update to version 2.3.1tensorflow-cpu (PYTHON):
Affected version(s) =2.3.0 <2.3.1Fix Suggestion:
Update to version 2.3.1tensorflow-gpu (PYTHON):
Affected version(s) =2.2.0 <2.2.1Fix Suggestion:
Update to version 2.2.1Related Resources (9)
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Contact UsCVSS v4
Base Score:
7.1
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
HIGH
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.1
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
LOW
CVSS v2
Base Score:
5.5
Access Vector
NETWORK
Access Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Weakness Type (CWE)
Use of Uninitialized Resource
EPSS
Base Score:
0.21