CVE-2021-37687
Heap OOB in TensorFlow Lite's `Gather*` implementations
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
TensorFlow is an end-to-end open source platform for machine learning. In affected versions TFLite's [`GatherNd` implementation](https://github.com/tensorflow/tensorflow/blob/149562d49faa709ea80df1d99fc41d005b81082a/tensorflow/lite/kernels/gather_nd.cc#L124) does not support negative indices but there are no checks for this situation. Hence, an attacker can read arbitrary data from the heap by carefully crafting a model with negative values in `indices`. Similar issue exists in [`Gather` implementation](https://github.com/tensorflow/tensorflow/blob/149562d49faa709ea80df1d99fc41d005b81082a/tensorflow/lite/kernels/gather.cc). We have patched the issue in GitHub commits bb6a0383ed553c286f87ca88c207f6774d5c4a8f and eb921122119a6b6e470ee98b89e65d721663179d. The fix will be included in TensorFlow 2.6.0. We will also cherrypick this commit on TensorFlow 2.5.1, TensorFlow 2.4.3, and TensorFlow 2.3.4, as these are also affected and still in supported range.
TensorFlow es una plataforma de código abierto de extremo a extremo para el aprendizaje automático. En las versiones afectadas, la [implementación de "GatherNd"] de TFLite (https://github.com/tensorflow/tensorflow/blob/149562d49faa709ea80df1d99fc41d005b81082a/tensorflow/lite/kernels/gather_nd.cc#L124) no admite índices negativos pero no hay comprobaciones de esta situación. Por lo tanto, un atacante puede leer datos arbitrarios de la pila al diseñar cuidadosamente un modelo con valores negativos en "índices". Se presenta un problema similar en la [implementación de "Gather"] (https://github.com/tensorflow/tensorflow/blob/149562d49faa709ea80df1d99fc41d005b81082a/tensorflow/lite/kernels/gather.cc). Hemos solucionado el problema en las commits de GitHub bb6a0383ed553c286f87ca88c207f6774d5c4a8f y eb921122119a6b6e470ee98b89e65d721663179d. La corrección será incluida en TensorFlow versión 2.6.0.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2021-07-29 CVE Reserved
- 2021-08-12 CVE Published
- 2023-03-08 EPSS Updated
- 2024-08-04 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-125: Out-of-bounds Read
CAPEC
References (3)
| URL | Tag | Source |
|---|---|---|
| https://github.com/tensorflow/tensorflow/commit/eb921122119a6b6e470ee98b89e65d721663179d | Third Party Advisory | |
| https://github.com/tensorflow/tensorflow/security/advisories/GHSA-jwf9-w5xm-f437 | Third Party Advisory |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://github.com/tensorflow/tensorflow/commit/bb6a0383ed553c286f87ca88c207f6774d5c4a8f | 2021-08-18 |
| URL | Date | SRC |
|---|
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Google Search vendor "Google" | Tensorflow Search vendor "Google" for product "Tensorflow" | >= 2.3.0 < 2.3.4 Search vendor "Google" for product "Tensorflow" and version " >= 2.3.0 < 2.3.4" | - |
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| Google Search vendor "Google" | Tensorflow Search vendor "Google" for product "Tensorflow" | >= 2.4.0 < 2.4.3 Search vendor "Google" for product "Tensorflow" and version " >= 2.4.0 < 2.4.3" | - |
Affected
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| Google Search vendor "Google" | Tensorflow Search vendor "Google" for product "Tensorflow" | 2.5.0 Search vendor "Google" for product "Tensorflow" and version "2.5.0" | - |
Affected
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| Google Search vendor "Google" | Tensorflow Search vendor "Google" for product "Tensorflow" | 2.6.0 Search vendor "Google" for product "Tensorflow" and version "2.6.0" | rc0 |
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| Google Search vendor "Google" | Tensorflow Search vendor "Google" for product "Tensorflow" | 2.6.0 Search vendor "Google" for product "Tensorflow" and version "2.6.0" | rc1 |
Affected
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| Google Search vendor "Google" | Tensorflow Search vendor "Google" for product "Tensorflow" | 2.6.0 Search vendor "Google" for product "Tensorflow" and version "2.6.0" | rc2 |
Affected
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