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CVE-2021-29566
May 14, 2021
TensorFlow is an end-to-end open source platform for machine learning. An attacker can write outside the bounds of heap allocated arrays by passing invalid arguments to "tf.raw_ops.Dilation2DBackpropInput". This is because the implementation(https://github.com/tensorflow/tensorflow/blob/afd954e65f15aea4d438d0a219136fc4a63a573d/tensorflow/core/kernels/dilation_ops.cc#L321-L322) does not validate before writing to the output array. The values for "h_out" and "w_out" are guaranteed to be in range for "out_backprop" (as they are loop indices bounded by the size of the array). However, there are no similar guarantees relating "h_in_max"/"w_in_max" and "in_backprop". The fix will be included in TensorFlow 2.5.0. We will also cherrypick this commit on TensorFlow 2.4.2, TensorFlow 2.3.3, TensorFlow 2.2.3 and TensorFlow 2.1.4, as these are also affected and still in supported range.
Affected Packages
tensorflow-gpu (PYTHON):
Affected version(s) >=2.3.0 <2.3.3
Fix Suggestion:
Update to version 2.3.3
tensorflow-gpu (PYTHON):
Affected version(s) >=2.2.0 <2.2.3
Fix Suggestion:
Update to version 2.2.3
tensorflow-cpu (PYTHON):
Affected version(s) >=2.3.0 <2.3.3
Fix Suggestion:
Update to version 2.3.3
tensorflow (PYTHON):
Affected version(s) >=2.4.0 <2.4.2
Fix Suggestion:
Update to version 2.4.2
tensorflow (PYTHON):
Affected version(s) >=0.11.0rc2 <2.1.4
Fix Suggestion:
Update to version 2.1.4
tensorflow (PYTHON):
Affected version(s) >=2.2.0 <2.2.3
Fix Suggestion:
Update to version 2.2.3
tensorflow-cpu (PYTHON):
Affected version(s) >=0.0.0 <2.1.4
Fix Suggestion:
Update to version 2.1.4
tensorflow-cpu (PYTHON):
Affected version(s) >=2.4.0 <2.4.2
Fix Suggestion:
Update to version 2.4.2
tensorflow (PYTHON):
Affected version(s) >=2.3.0 <2.3.3
Fix Suggestion:
Update to version 2.3.3
tensorflow-gpu (PYTHON):
Affected version(s) >=0.12.0rc0 <2.1.4
Fix Suggestion:
Update to version 2.1.4
tensorflow-cpu (PYTHON):
Affected version(s) >=2.2.0 <2.2.3
Fix Suggestion:
Update to version 2.2.3
tensorflow-gpu (PYTHON):
Affected version(s) >=2.4.0 <2.4.2
Fix Suggestion:
Update to version 2.4.2
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CVSS v4
Base Score:
2
Attack Vector
LOCAL
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
2.5
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
CVSS v2
Base Score:
4.6
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Weakness Type (CWE)
Out-of-bounds Write
EPSS
Base Score:
0.02