Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2021-37678— Arbitrary code execution due to YAML deserialization

Quick assessment

Affected
tensorflow tensorflow
Exploitation
Public or AI PoC available; prioritize validation
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。 TensorFlow 中存在代码问题漏洞，该漏洞源于产品从YAML格式反序列化到Keras模型时未对输入数据做有效验证，攻击者可通过该漏洞导致代码执行。以下产品及版本收到影响：TensorFlow 2.5.1、TensorFlow 2.4.3 和 TensorFlow 2.3.4。

CVSS 9.3 · Critical EPSS 0.45% · P37

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2021-37678

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Arbitrary code execution due to YAML deserialization
Source: CVE Program / CVE List V5
Vulnerability Description
TensorFlow is an end-to-end open source platform for machine learning. In affected versions TensorFlow and Keras can be tricked to perform arbitrary code execution when deserializing a Keras model from YAML format. The [implementation](https://github.com/tensorflow/tensorflow/blob/460e000de3a83278fb00b61a16d161b1964f15f4/tensorflow/python/keras/saving/model_config.py#L66-L104) uses `yaml.unsafe_load` which can perform arbitrary code execution on the input. Given that YAML format support requires a significant amount of work, we have removed it for now. We have patched the issue in GitHub commit 23d6383eb6c14084a8fc3bdf164043b974818012. 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:N/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
可信数据的反序列化
Source: CVE Program / CVE List V5
Vulnerability Title
Google TensorFlow 代码问题漏洞
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。 TensorFlow 中存在代码问题漏洞，该漏洞源于产品从YAML格式反序列化到Keras模型时未对输入数据做有效验证，攻击者可通过该漏洞导致代码执行。以下产品及版本收到影响：TensorFlow 2.5.1、TensorFlow 2.4.3 和 TensorFlow 2.3.4。
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-2021-37678

# POC Description Source Link Shenlong Link
1 TP Seguridad Informática UTN FRBA 2021 https://github.com/fran-CICS/ExploitTensorflowCVE-2021-37678 POC Details
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2021-37678

请登录查看更多情报信息。

Patches & Fixes for CVE-2021-37678 (1)

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

CVE-2021-37639 8.4 HIGH Null pointer dereference and heap OOB read in TensorFlow
CVE-2021-37648 7.8 HIGH Incorrect validation of `SaveV2` inputs in TensorFlow
CVE-2021-37667 7.8 HIGH Reference binding to nullptr in unicode encoding in TensorFlow
CVE-2021-37666 7.8 HIGH Reference binding to nullptr in `RaggedTensorToVariant` in TensorFlow
CVE-2021-37671 7.8 HIGH Reference binding to nullptr in map operations in TensorFlow
CVE-2021-37676 7.8 HIGH Reference binding to nullptr in shape inference in TensorFlow
CVE-2021-37688 7.8 HIGH Null pointer dereference in TensorFlow Lite
CVE-2021-37689 7.8 HIGH Null pointer dereference in TensorFlow Lite MLIR optimizations
CVE-2021-37681 7.8 HIGH Null pointer exception in TensorFlow Lite
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-2021-37663 7.8 HIGH Incomplete validation in `QuantizeV2` in TensorFlow
CVE-2021-37665 7.8 HIGH Incomplete validation in MKL requantization in TensorFlow
CVE-2021-37647 7.7 HIGH Null pointer dereference in `SparseTensorSliceDataset` in TensorFlow
CVE-2021-37643 7.7 HIGH Null pointer dereference in `MatrixDiagPartOp` in TensorFlow
CVE-2021-37637 7.7 HIGH Null pointer dereference in `CompressElement` in TensorFlow
CVE-2021-37649 7.7 HIGH Null pointer dereference in `UncompressElement` in TensorFlow
CVE-2021-37638 7.7 HIGH Null pointer dereference in `RaggedTensorToTensor` in TensorFlow
CVE-2021-37641 7.3 HIGH Heap OOB in `RaggedGather` 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-502

V. Comments for CVE-2021-37678

No comments yet

Leave a comment