Vulnerability Details : CVE-2021-29544
Potential exploit
TensorFlow is an end-to-end open source platform for machine learning. An attacker can trigger a denial of service via a `CHECK`-fail in `tf.raw_ops.QuantizeAndDequantizeV4Grad`. This is because the implementation does not validate the rank of the `input_*` tensors. In turn, this results in the tensors being passes as they are to `QuantizeAndDequantizePerChannelGradientImpl`. However, the `vec<T>` method, requires the rank to 1 and triggers a `CHECK` failure otherwise. The fix will be included in TensorFlow 2.5.0. We will also cherrypick this commit on TensorFlow 2.4.2 as this is the only other affected version.
Vulnerability category: Denial of service
Products affected by CVE-2021-29544
- cpe:2.3:a:google:tensorflow:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-29544
0.05%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 14 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-29544
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
2.1
|
LOW | AV:L/AC:L/Au:N/C:N/I:N/A:P |
3.9
|
2.9
|
NIST | |
|
5.5
|
MEDIUM | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
1.8
|
3.6
|
NIST | |
|
2.5
|
LOW | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L |
1.0
|
1.4
|
GitHub, Inc. |
CWE ids for CVE-2021-29544
-
The product does not check or incorrectly checks for unusual or exceptional conditions that are not expected to occur frequently during day to day operation of the product.Assigned by: security-advisories@github.com (Primary)
References for CVE-2021-29544
-
https://github.com/tensorflow/tensorflow/blob/95078c145b5a7a43ee046144005f733092756ab5/tensorflow/core/kernels/quantize_and_dequantize_op.cc#L162-L163
tensorflow/tensorflow/core/kernels/quantize_and_dequantize_op.cc at 95078c145b5a7a43ee046144005f733092756ab5 · tensorflow/tensorflow · GitHub
-
https://github.com/tensorflow/tensorflow/security/advisories/GHSA-6g85-3hm8-83f9
`CHECK`-fail in `QuantizeAndDequantizeV4Grad` · Advisory · tensorflow/tensorflow · GitHubExploit;Patch;Third Party Advisory
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https://github.com/tensorflow/tensorflow/commit/20431e9044cf2ad3c0323c34888b192f3289af6b
Fix `tf.raw_ops.QuantizeAndDequantizeV4Grad` CHECK failure. · tensorflow/tensorflow@20431e9 · GitHubPatch;Third Party Advisory
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https://github.com/tensorflow/tensorflow/blob/95078c145b5a7a43ee046144005f733092756ab5/tensorflow/core/kernels/quantize_and_dequantize_op.h#L295-L306
tensorflow/tensorflow/core/kernels/quantize_and_dequantize_op.h at 95078c145b5a7a43ee046144005f733092756ab5 · tensorflow/tensorflow · GitHub
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