TensorFlow vulnerable to `CHECK` fail in `RaggedTensorToVariant`

Description

Impact

If RaggedTensorToVariant is given a rt_nested_splits list that contains tensors of ranks other than one, it results in a CHECK fail that can be used to trigger a denial of service attack.

import tensorflow as tf

batched_input = True
rt_nested_splits = tf.constant([0,32,64], shape=[3], dtype=tf.int64)
rt_dense_values = tf.constant([0,32,64], shape=[3], dtype=tf.int64)
tf.raw_ops.RaggedTensorToVariant(rt_nested_splits=rt_nested_splits, rt_dense_values=rt_dense_values, batched_input=batched_input)

Patches

We have patched the issue in GitHub commit 88f93dfe691563baa4ae1e80ccde2d5c7a143821.

The fix will be included in TensorFlow 2.10.0. We will also cherrypick this commit on TensorFlow 2.9.1, TensorFlow 2.8.1, and TensorFlow 2.7.2, as these are also affected and still in supported range.

For more information

Please consult our security guide for more information regarding the security model and how to contact us with issues and questions.

Attribution

This vulnerability has been reported by Neophytos Christou, Secure Systems Labs, Brown University.

Basic information

Type
reviewed
Severity
medium
Advisory on GitHub
Open advisory ↗
Repository advisory
Open repository advisory ↗
Source code
Browse source ↗
Published (advisory)
2022-09-16 21:14:10 UTC
Updated
2023-01-30 05:02:43 UTC
GitHub reviewed
2022-09-16 21:14:10 UTC
NVD published
2022-09-16

EPSS Score

Score Percentile
0.06% 19.80%

CVSS Scores

Base score Version Severity Vector
5.9 3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.

Identifiers

CWEs

CWE id Name
CWE-617 Reachable Assertion

Affected packages (9)

Vulnerable version ranges and first patched releases as published by GitHub.

Ecosystem Package Vulnerable range First patched Vulnerable functions
pip tensorflow < 2.7.2 2.7.2
pip tensorflow >= 2.8.0, < 2.8.1 2.8.1
pip tensorflow >= 2.9.0, < 2.9.1 2.9.1
pip tensorflow-cpu < 2.7.2 2.7.2
pip tensorflow-cpu >= 2.8.0, < 2.8.1 2.8.1
pip tensorflow-cpu >= 2.9.0, < 2.9.1 2.9.1
pip tensorflow-gpu < 2.7.2 2.7.2
pip tensorflow-gpu >= 2.8.0, < 2.8.1 2.8.1
pip tensorflow-gpu >= 2.9.0, < 2.9.1 2.9.1

References

cvelogic Threat Intelligence