CVE-2020-15265— Segfault 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。 Tensorflow 2.4.0之前版本存在安全漏洞，攻击者可利用该漏洞可以将一个无效的axis值传递给tf.quantization。数字转换和dequantize。这将导致在c++内核实现中访问一个超出输入张量秩的维度。但是dim size只执行DCHECK来验证参数，然后使用它来访问数组中相应的元素。因为在正常的构建中，DCHECK 类宏是无操作的，这会导致segfault和访问数组边界之外。
Possible ATT&CK Techniques 1 AI
T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2020-15265
Vulnerability Information
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Vulnerability Title
Segfault in Tensorflow
Source: CVE Program / CVE List V5
Vulnerability Description
In Tensorflow before version 2.4.0, an attacker can pass an invalid `axis` value to `tf.quantization.quantize_and_dequantize`. This results in accessing a dimension outside the rank of the input tensor in the C++ kernel implementation. However, dim_size only does a DCHECK to validate the argument and then uses it to access the corresponding element of an array. Since in normal builds, `DCHECK`-like macros are no-ops, this results in segfault and access out of bounds of the array. The issue is patched in eccb7ec454e6617738554a255d77f08e60ee0808 and TensorFlow 2.4.0 will be released containing the patch. TensorFlow nightly packages after this commit will also have the issue resolved.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/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。 Tensorflow 2.4.0之前版本存在安全漏洞，攻击者可利用该漏洞可以将一个无效的axis值传递给tf.quantization。数字转换和dequantize。这将导致在c++内核实现中访问一个超出输入张量秩的维度。但是dim size只执行DCHECK来验证参数，然后使用它来访问数组中相应的元素。因为在正常的构建中，DCHECK 类宏是无操作的，这会导致segfault和访问数组边界之外。
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 | < 2.4.0 | - |
|
II. Public POCs for CVE-2020-15265
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|---|
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Patches & Fixes for CVE-2020-15265 (1)
Vendor Advisories for CVE-2020-15265 (1)
-
https://github.com/tensorflow/tensorflow/security/advisories/GHSA-rrfp-j2mp-hq9c x_refsource_CONFIRM
Other References for CVE-2020-15265 (1)
-
https://github.com/tensorflow/tensorflow/issues/42105 x_refsource_MISC
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