cve.bz

CVE-2021-29566

7.8 highEPSS 0.2%

High (7.8) in google tensorflow. EPSS 0.2% chance of exploitation in the next 30 days. Fixed in tensorflow 2.1.4, 2.2.0rc0, 2.2.3.

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.

Severity

CVSS 3.1

7.8 high
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
0.2% chance of exploitation in the next 30 days; higher than 10% of CVEs (scores of 2026-10-31)
CWE
CWE-787
Published
Modified
Record from
the NVD, synced

Affected

Packages (OSV)

AdvisoryEcosystemPackageAffectedFixed in
GHSA-pvrc-hg3f-58r6PyPItensorflow<2.1.42.1.4
GHSA-pvrc-hg3f-58r6PyPItensorflow>=2.2.0 <2.2.32.2.3
GHSA-pvrc-hg3f-58r6PyPItensorflow>=2.3.0 <2.3.32.3.3
GHSA-pvrc-hg3f-58r6PyPItensorflow>=2.4.0 <2.4.22.4.2
GHSA-pvrc-hg3f-58r6PyPItensorflow-cpu<2.1.42.1.4
GHSA-pvrc-hg3f-58r6PyPItensorflow-cpu>=2.2.0 <2.2.32.2.3
GHSA-pvrc-hg3f-58r6PyPItensorflow-cpu>=2.3.0 <2.3.32.3.3
GHSA-pvrc-hg3f-58r6PyPItensorflow-cpu>=2.4.0 <2.4.22.4.2
GHSA-pvrc-hg3f-58r6PyPItensorflow-gpu<2.1.42.1.4
GHSA-pvrc-hg3f-58r6PyPItensorflow-gpu>=2.2.0 <2.2.32.2.3
GHSA-pvrc-hg3f-58r6PyPItensorflow-gpu>=2.3.0 <2.3.32.3.3
GHSA-pvrc-hg3f-58r6PyPItensorflow-gpu>=2.4.0 <2.4.22.4.2
PYSEC-2021-203PyPItensorflow<2.2.0rc0
>=2.2.0 <2.3.0rc0
>=2.3.0 <2.3.4
>=2.4.0 <2.4.3		2.2.0rc0, 2.3.0rc0, 2.3.4, 2.4.3
PYSEC-2021-494PyPItensorflow-cpu<2.2.0rc0
>=2.2.0 <2.3.0rc0
>=2.3.0 <2.3.4
>=2.4.0 <2.4.3		2.2.0rc0, 2.3.0rc0, 2.3.4, 2.4.3
PYSEC-2021-692PyPItensorflow-gpu<2.2.0rc0
>=2.2.0 <2.3.0rc0
>=2.3.0 <2.3.4
>=2.4.0 <2.4.3		2.2.0rc0, 2.3.0rc0, 2.3.4, 2.4.3

References

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