CVE-2021-29608
Heap OOB and null pointer dereference in `RaggedTensorToTensor`
Description
TensorFlow is an end-to-end open source platform for machine learning. Due to lack of validation in `tf.raw_ops.RaggedTensorToTensor`, an attacker can exploit an undefined behavior if input arguments are empty. The implementation(https://github.com/tensorflow/tensorflow/blob/656e7673b14acd7835dc778867f84916c6d1cac2/tensorflow/core/kernels/ragged_tensor_to_tensor_op.cc#L356-L360) only checks that one of the tensors is not empty, but does not check for the other ones. There are multiple `DCHECK` validations to prevent heap OOB, but these are no-op in release builds, hence they don't prevent anything. The fix will be included in TensorFlow 2.5.0. We will also cherrypick these commits 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.
How to fix CVE-2021-29608
To remediate CVE-2021-29608, upgrade the affected package to a fixed version below.
- —upgrade to 2.1.4 or later
- —upgrade to 2.1.4 or later
- —upgrade to c4d7afb6a5986b04505aca4466ae1951686c80f6 or later
- —upgrade to c4d7afb6a5986b04505aca4466ae1951686c80f6 or later
- —upgrade to 2.1.4 or later
- —upgrade to c4d7afb6a5986b04505aca4466ae1951686c80f6 or later
- —upgrade to 2.1.4 or later
Is CVE-2021-29608 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (7)
- from 0, < 2.1.4, >= 2.2.0, < 2.2.3, >= 2.3.0, < 2.3.3, >= 2.4.0, < 2.4.2
- from 0, < 2.1.4
- from 0, < c4d7afb6a5986b04505aca4466ae1951686c80f6, < f94ef358bb3e91d517446454edff6535bcfe8e4a, < b761c9b652af2107cfbc33efd19be0ce41daa33e | from 0, < 2.2.0rc0, >= 2.2.0, < 2.3.0rc0, >= 2.3.0, < 2.3.4, >= 2.4.0, < 2.4.3
- from 0, < c4d7afb6a5986b04505aca4466ae1951686c80f6, < f94ef358bb3e91d517446454edff6535bcfe8e4a, < b761c9b652af2107cfbc33efd19be0ce41daa33e | from 0, < 2.2.0rc0, >= 2.2.0, < 2.3.0rc0, >= 2.3.0, < 2.3.4, >= 2.4.0, < 2.4.3
- from 0, < 2.1.4
- from 0, < c4d7afb6a5986b04505aca4466ae1951686c80f6, < f94ef358bb3e91d517446454edff6535bcfe8e4a, < b761c9b652af2107cfbc33efd19be0ce41daa33e | from 0, < 2.2.0rc0, >= 2.2.0, < 2.3.0rc0, >= 2.3.0, < 2.3.4, >= 2.4.0, < 2.4.3
- from 0, < 2.1.4
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N |
| osv | CVSS 3.1 | MEDIUM5.3 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:H |