CVE-2021-29514

Name
CVE-2021-29514
Description
TensorFlow is an end-to-end open source platform for machine learning. If the `splits` argument of `RaggedBincount` does not specify a valid `SparseTensor`(https://www.tensorflow.org/api_docs/python/tf/sparse/SparseTensor), then an attacker can trigger a heap buffer overflow. This will cause a read from outside the bounds of the `splits` tensor buffer in the implementation of the `RaggedBincount` op(https://github.com/tensorflow/tensorflow/blob/8b677d79167799f71c42fd3fa074476e0295413a/tensorflow/core/kernels/bincount_op.cc#L430-L446). Before the `for` loop, `batch_idx` is set to 0. The attacker sets `splits(0)` to be 7, hence the `while` loop does not execute and `batch_idx` remains 0. This then results in writing to `out(-1, bin)`, which is before the heap allocated buffer for the output tensor. The fix will be included in TensorFlow 2.5.0. We will also cherrypick this commit on TensorFlow 2.4.2 and TensorFlow 2.3.3, as these are also affected.
NVD Severity
medium
Other trackers
Mailing lists
Exploits
Forges
GitHub (code, issues), Aports (code, issues)

References

Type URI
MISC https://github.com/tensorflow/tensorflow/commit/eebb96c2830d48597d055d247c0e9aebaea94cd5
CONFIRM https://github.com/tensorflow/tensorflow/security/advisories/GHSA-8h46-5m9h-7553

Match rules

CPE URI Source package Min version Max version
cpe:2.3:a:google:tensorflow:*:*:*:*:*:*:*:* tensorflow >= None <= 2.1.4:
cpe:2.3:a:google:tensorflow:*:*:*:*:*:*:*:* tensorflow >= 2.2.0: <= 2.2.3:
cpe:2.3:a:google:tensorflow:*:*:*:*:*:*:*:* tensorflow >= 2.3.0: <= 2.3.3:
cpe:2.3:a:google:tensorflow:*:*:*:*:*:*:*:* tensorflow >= 2.4.0: <= 2.4.2:
cpe:2.3:a:google:tensorflow:*:*:*:*:*:*:*:* tensorflow >= None <= 2.1.4
cpe:2.3:a:google:tensorflow:*:*:*:*:*:*:*:* tensorflow >= 2.2.0 <= 2.2.3
cpe:2.3:a:google:tensorflow:*:*:*:*:*:*:*:* tensorflow >= 2.3.0 <= 2.3.3
cpe:2.3:a:google:tensorflow:*:*:*:*:*:*:*:* tensorflow >= 2.4.0 <= 2.4.2

Vulnerable and fixed packages

Source package Branch Version Maintainer Status