CVE-2021-29524 : TensorFlow is an end-to-end open source platform for machine learning. An attack

TensorFlow is an end-to-end open source platform for machine learning. An attacker can trigger a division by 0 in `tf.raw_ops.Conv2DBackpropFilter`. This is because the implementation(https://github.com/tensorflow/tensorflow/blob/496c2630e51c1a478f095b084329acedb253db6b/tensorflow/core/kernels/conv_grad_shape_utils.cc#L130) does a modulus operation where the divisor is controlled by the caller. 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.

Published 2021-05-14 20:15:12

Updated 2021-05-20 16:24:34

Source GitHub, Inc.

View at NVD, CVE.org

Products affected by CVE-2021-29524

Google » Tensorflow
Versions from including (>=) 2.3.0 and before (<) 2.3.3
cpe:2.3:a:google:tensorflow:*:*:*:*:*:*:*:*
Matching versions
Google » Tensorflow
Versions before (<) 2.1.4
cpe:2.3:a:google:tensorflow:*:*:*:*:*:*:*:*
Matching versions
Google » Tensorflow
Versions from including (>=) 2.2.0 and before (<) 2.2.3
cpe:2.3:a:google:tensorflow:*:*:*:*:*:*:*:*
Matching versions
Google » Tensorflow
Versions from including (>=) 2.4.0 and before (<) 2.4.2
cpe:2.3:a:google:tensorflow:*:*:*:*:*:*:*:*
Matching versions

Exploit prediction scoring system (EPSS) score for CVE-2021-29524

EPSS FAQ

0.04%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 11 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-29524

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
2.1	LOW	AV:L/AC:L/Au:N/C:N/I:N/A:P	3.9	2.9	NIST
Access Vector: Local Access Complexity: Low Authentication: None Confidentiality Impact: None Integrity Impact: None Availability Impact: Partial
5.5	MEDIUM	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	1.8	3.6	NIST
Attack Vector: Local Attack Complexity: Low Privileges Required: Low User Interaction: None Scope: Unchanged Confidentiality: None Integrity: None Availability: High
2.5	LOW	CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L	1.0	1.4	GitHub, Inc.
Attack Vector: Local Attack Complexity: High Privileges Required: Low User Interaction: None Scope: Unchanged Confidentiality: None Integrity: None Availability: Low

CWE ids for CVE-2021-29524

CWE-369 Divide By Zero

The product divides a value by zero.

Assigned by: security-advisories@github.com (Primary)

References for CVE-2021-29524

https://github.com/tensorflow/tensorflow/security/advisories/GHSA-r4pj-74mg-8868

Division by 0 in `Conv2DBackpropFilter` · Advisory · tensorflow/tensorflow · GitHub
Exploit;Patch;Third Party Advisory
https://github.com/tensorflow/tensorflow/commit/fca9874a9b42a2134f907d2fb46ab774a831404a

Prevent another division by zero. · tensorflow/tensorflow@fca9874 · GitHub
Patch;Third Party Advisory

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Vulnerability Details : CVE-2021-29524

Products affected by CVE-2021-29524

Exploit prediction scoring system (EPSS) score for CVE-2021-29524

CVSS scores for CVE-2021-29524

CWE ids for CVE-2021-29524

References for CVE-2021-29524