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CVE-2020-26270— CHECK-fail in LSTM with zero-length input 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 存在输入验证错误漏洞，该漏洞源于当使用CUDA后端时，LSTM GRU层接收到一个长度为零的输入，从而导致检查失败。攻击者利用该漏洞导致拒绝服务。以下产品及版本受到影响：1.15.5、2.0.4、2.1.3、2.2.2、2.3.2、2.4.0。

CVSS 4.4 · Medium EPSS 0.17% · P6

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2020-26270

Vulnerability Information
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Vulnerability Title
CHECK-fail in LSTM with zero-length input in TensorFlow
Source: CVE Program / CVE List V5
Vulnerability Description
In affected versions of TensorFlow running an LSTM/GRU model where the LSTM/GRU layer receives an input with zero-length results in a CHECK failure when using the CUDA backend. This can result in a query-of-death vulnerability, via denial of service, if users can control the input to the layer. This is fixed in versions 1.15.5, 2.0.4, 2.1.3, 2.2.2, 2.3.2, and 2.4.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Google TensorFlow 输入验证错误漏洞
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 存在输入验证错误漏洞，该漏洞源于当使用CUDA后端时，LSTM GRU层接收到一个长度为零的输入，从而导致检查失败。攻击者利用该漏洞导致拒绝服务。以下产品及版本受到影响：1.15.5、2.0.4、2.1.3、2.2.2、2.3.2、2.4.0。
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 < 1.15.5 -

II. Public POCs for CVE-2020-26270

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III. Intelligence Information for CVE-2020-26270

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Patches & Fixes for CVE-2020-26270 (1)

Vendor Advisories for CVE-2020-26270 (1)

Same Patch Batch · tensorflow · 2020-12-10 · 6 CVEs total

CVE-2020-26271 4.4 MEDIUM Heap out of bounds access in MakeEdge in TensorFlow
CVE-2020-26268 4.4 MEDIUM Write to immutable memory region in TensorFlow
CVE-2020-26267 4.4 MEDIUM Lack of validation in data format attributes in TensorFlow
CVE-2020-26266 4.4 MEDIUM Uninitialized memory access in Eigen types in TensorFlow
CVE-2020-26269 Heap out of bounds read in filesystem glob matching in TensorFlow

IV. Related Vulnerabilities

Same product: tensorflow
Same vendor: tensorflow
Same weakness: CWE-20

V. Comments for CVE-2020-26270

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