CVE-2020-26268

描述

In affected versions of TensorFlow the tf.raw_ops.ImmutableConst operation returns a constant tensor created from a memory mapped file which is assumed immutable. However, if the type of the tensor is not an integral type, the operation crashes the Python interpreter as it tries to write to the memory area. If the file is too small, TensorFlow properly returns an error as the memory area has fewer bytes than what is needed for the tensor it creates. However, as soon as there are enough bytes, the above snippet causes a segmentation fault. This is because the allocator used to return the buffer data is not marked as returning an opaque handle since the needed virtual method is not overridden. This is fixed in versions 1.15.5, 2.0.4, 2.1.3, 2.2.2, 2.3.2, and 2.4.0.

如何修補 CVE-2020-26268

要修補 CVE-2020-26268,請將受影響套件升級到下列已修補版本。

• —升級至 1.15.5 或更新版本
• —升級至 1.15.5 或更新版本
• —升級至 c1e1fc899ad5f8c725dcbb6470069890b5060bc7 或更新版本
• —升級至 1.15.5 或更新版本
• —升級至 c1e1fc899ad5f8c725dcbb6470069890b5060bc7 或更新版本
• —升級至 1.15.5 或更新版本
• —升級至 c1e1fc899ad5f8c725dcbb6470069890b5060bc7 或更新版本

CVE-2020-26268 正在被利用嗎?

低 — EPSS 為 0.2%,目前沒有觀察到大規模利用活動。

受影響套件(7)

• from 0, < 1.15.5, >= 2.0.0, < 2.0.4, >= 2.1.0, < 2.1.3, >= 2.2.0, < 2.2.2, >= 2.3.0, < 2.3.2
• from 0, < 1.15.5
• from 0, < c1e1fc899ad5f8c725dcbb6470069890b5060bc7 | from 0, < 1.15.5, >= 2.0.0, < 2.0.4, >= 2.1.0, < 2.1.3, >= 2.2.0, < 2.2.2, >= 2.3.0, < 2.3.2
• from 0, < 1.15.5
• from 0, < c1e1fc899ad5f8c725dcbb6470069890b5060bc7 | from 0, < 1.15.5, >= 2.0.0, < 2.0.4, >= 2.1.0, < 2.1.3, >= 2.2.0, < 2.2.2, >= 2.3.0, < 2.3.2
• from 0, < 1.15.5
• from 0, < c1e1fc899ad5f8c725dcbb6470069890b5060bc7 | from 0, < 1.15.5, >= 2.0.0, < 2.0.4, >= 2.1.0, < 2.1.3, >= 2.2.0, < 2.2.2, >= 2.3.0, < 2.3.2

CVSS 分數

參考連結(7)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2020-26268
• PATCHgithub.com/tensorflow/tensorflow
• WEBgithub.com/pypa/advisory-database/tree/main/vulns/tensorflow-cpu/PYSEC-2020-299.yaml
• WEBgithub.com/pypa/advisory-database/tree/main/vulns/tensorflow-gpu/PYSEC-2020-334.yaml