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CVE-2021-37654— Heap OOB and CHECK fail in `ResourceGather` in TensorFlow

Quick assessment

Affected
tensorflow tensorflow
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Google TensorFlow是美国谷歌（Google）公司的一套用于机器学习的端到端开源平台。 Google TensorFlow存在缓冲区错误漏洞，该漏洞源于在受影响的版本中，tf.raw_ops.ResourceGather缺少有效的限制，攻击者可以在TensorFlow的调试版本中执行“检查”-失败，或从发布版本中相同API中的堆分配的边界之外数据读取，来触发崩溃。

CVSS 7.3 · High EPSS 0.17% · P6
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I. Basic Information for CVE-2021-37654

Vulnerability Information
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Vulnerability Title
Heap OOB and CHECK fail in `ResourceGather` in TensorFlow
Source: CVE Program / CVE List V5
Vulnerability Description
TensorFlow is an end-to-end open source platform for machine learning. In affected versions an attacker can trigger a crash via a `CHECK`-fail in debug builds of TensorFlow using `tf.raw_ops.ResourceGather` or a read from outside the bounds of heap allocated data in the same API in a release build. The [implementation](https://github.com/tensorflow/tensorflow/blob/f24faa153ad31a4b51578f8181d3aaab77a1ddeb/tensorflow/core/kernels/resource_variable_ops.cc#L660-L668) does not check that the `batch_dims` value that the user supplies is less than the rank of the input tensor. Since the implementation uses several for loops over the dimensions of `tensor`, this results in reading data from outside the bounds of heap allocated buffer backing the tensor. We have patched the issue in GitHub commit bc9c546ce7015c57c2f15c168b3d9201de679a1d. 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5
Vulnerability Title
Google TensorFlow缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Google TensorFlow是美国谷歌（Google）公司的一套用于机器学习的端到端开源平台。 Google TensorFlow存在缓冲区错误漏洞，该漏洞源于在受影响的版本中，tf.raw_ops.ResourceGather缺少有效的限制，攻击者可以在TensorFlow的调试版本中执行“检查”-失败，或从发布版本中相同API中的堆分配的边界之外数据读取，来触发崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
tensorflow tensorflow >= 2.5.0, < 2.5.1 -

II. Public POCs for CVE-2021-37654

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III. Intelligence Information for CVE-2021-37654

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Patches & Fixes for CVE-2021-37654 (1)

Vendor Advisories for CVE-2021-37654 (1)

Same Patch Batch · tensorflow · 2021-08-12 · 58 CVEs total

CVE-2021-37678 9.3 CRITICAL Arbitrary code execution due to YAML deserialization
CVE-2021-37639 8.4 HIGH Null pointer dereference and heap OOB read in TensorFlow
CVE-2021-37689 7.8 HIGH Null pointer dereference in TensorFlow Lite MLIR optimizations
CVE-2021-37665 7.8 HIGH Incomplete validation in MKL requantization in TensorFlow
CVE-2021-37663 7.8 HIGH Incomplete validation in `QuantizeV2` in TensorFlow
CVE-2021-37681 7.8 HIGH Null pointer exception in TensorFlow Lite
CVE-2021-37667 7.8 HIGH Reference binding to nullptr in unicode encoding in TensorFlow
CVE-2021-37688 7.8 HIGH Null pointer dereference in TensorFlow Lite
CVE-2021-37676 7.8 HIGH Reference binding to nullptr in shape inference in TensorFlow
CVE-2021-37671 7.8 HIGH Reference binding to nullptr in map operations in TensorFlow
CVE-2021-37666 7.8 HIGH Reference binding to nullptr in `RaggedTensorToVariant` in TensorFlow
CVE-2021-37648 7.8 HIGH Incorrect validation of `SaveV2` inputs in TensorFlow
CVE-2021-37652 7.8 HIGH Use after free in boosted trees creation in TensorFlow
CVE-2021-37650 7.8 HIGH Segfault and heap buffer overflow in `{Experimental,}DatasetToTFRecord` in TensorFlow
CVE-2021-37643 7.7 HIGH Null pointer dereference in `MatrixDiagPartOp` in TensorFlow
CVE-2021-37647 7.7 HIGH Null pointer dereference in `SparseTensorSliceDataset` in TensorFlow
CVE-2021-37638 7.7 HIGH Null pointer dereference in `RaggedTensorToTensor` in TensorFlow
CVE-2021-37649 7.7 HIGH Null pointer dereference in `UncompressElement` in TensorFlow
CVE-2021-37637 7.7 HIGH Null pointer dereference in `CompressElement` in TensorFlow
CVE-2021-37659 7.3 HIGH Out of bounds read via null pointer dereference in TensorFlow

Showing top 20 of 58 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: tensorflow
Same vendor: tensorflow
Same weakness: CWE-125

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