Medium severity · published May 14, 2021
CVE-2021-29555
TensorFlow is an end-to-end open source platform for machine learning
5.5
CVSS
0.2%
EPSS
No
On KEV
Description
TensorFlow is an end-to-end open source platform for machine learning. An attacker can cause a denial of service via a FPE runtime error in `tf.raw_ops.FusedBatchNorm`. This is because the implementation(https://github.com/tensorflow/tensorflow/blob/828f346274841fa7505f7020e88ca36c22e557ab/tensorflow/core/kernels/fused_batch_norm_op.cc#L295-L297) performs a division based on the last dimension of the `x` tensor. Since this is controlled by the user, an attacker can trigger a denial of service. 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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 8% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TE
Tensorflow · Google
before 2.1.4; 2.2.0 before 2.2.3; 2.3.0 before 2.3.3; 2.4.0 before 2.4.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-29555
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-29555
Patch
https://github.com/tensorflow/tensorflow/commit/1a2a87229d1d61e23a39373777c056161eb4084d
Exploit
https://github.com/tensorflow/tensorflow/security/advisories/GHSA-r35g-4525-29fq
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