CVE-2020-15209

描述

In tensorflow-lite before versions 1.15.4, 2.0.3, 2.1.2, 2.2.1 and 2.3.1, a crafted TFLite model can force a node to have as input a tensor backed by a `nullptr` buffer. This can be achieved by changing a buffer index in the flatbuffer serialization to convert a read-only tensor to a read-write one. The runtime assumes that these buffers are written to before a possible read, hence they are initialized with `nullptr`. However, by changing the buffer index for a tensor and implicitly converting that tensor to be a read-write one, as there is nothing in the model that writes to it, we get a null pointer dereference. The issue is patched in commit 0b5662bc, and is released in TensorFlow versions 1.15.4, 2.0.3, 2.1.2, 2.2.1, or 2.3.1.

如何修補 CVE-2020-15209

要修補 CVE-2020-15209,請將受影響套件升級到下列已修補版本。

• —升級至 1.15.4 或更新版本
• —升級至 1.15.4 或更新版本
• —升級至 1.15.4 或更新版本

CVE-2020-15209 正在被利用嗎?

低 — EPSS 為 0.8%,目前沒有觀察到大規模利用活動。

受影響套件(3)

• from 0, < 1.15.4
• from 0, < 1.15.4
• from 0, < 1.15.4

CVSS 分數

參考連結(9)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2020-15209
• PATCHgithub.com/tensorflow/tensorflow
• WEBlists.opensuse.org/opensuse-security-announce/2020-10/msg00065.html
• WEBgithub.com/pypa/advisory-database/tree/main/vulns/tensorflow-cpu/PYSEC-2020-289.yaml