cnvd - cnvd-2022-09856

cnvd-2022-09856

Vulnerability from cnvd

Title: Google TensorFlow代码问题漏洞（CNVD-2022-09856）

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存在代码问题漏洞，该漏洞源于当通过原始API恢复张量时，如果未提供张量名称，TensorFlow可能会被诱骗去引用空指针。攻击者可利用该漏洞通过提供一些张量名称来读取堆分配数据边界之外的内存。

Severity: 中

Patch Name: Google TensorFlow代码问题漏洞（CNVD-2022-09856）的补丁

Patch 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存在代码问题漏洞，该漏洞源于当通过原始API恢复张量时，如果未提供张量名称，TensorFlow可能会被诱骗去引用空指针。攻击者可利用该漏洞通过提供一些张量名称来读取堆分配数据边界之外的内存。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description:

厂商已发布了漏洞修复程序，请及时关注更新： https://github.com/tensorflow/tensorflow/security/advisories/GHSA-gh6x-4whr-2qv4

Reference: https://github.com/tensorflow/tensorflow/security/advisories/GHSA-gh6x-4whr-2qv4

Impacted products

Name
['Google TensorFlow <2.6.0', 'Google TensorFlow <2.5.1', 'Google TensorFlow <2.4.3', 'Google TensorFlow <2.3.4']

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CVE-2021-37639 (GCVE-0-2021-37639)

Vulnerability from cvelistv5

Published

2021-08-12 18:10

Modified

2024-08-04 01:23

Severity ?

8.4 (High) - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-476 - NULL Pointer Dereference

Summary

TensorFlow is an end-to-end open source platform for machine learning. When restoring tensors via raw APIs, if the tensor name is not provided, TensorFlow can be tricked into dereferencing a null pointer. Alternatively, attackers can read memory outside the bounds of heap allocated data by providing some tensor names but not enough for a successful restoration. The [implementation](https://github.com/tensorflow/tensorflow/blob/47a06f40411a69c99f381495f490536972152ac0/tensorflow/core/kernels/save_restore_tensor.cc#L158-L159) retrieves the tensor list corresponding to the `tensor_name` user controlled input and immediately retrieves the tensor at the restoration index (controlled via `preferred_shard` argument). This occurs without validating that the provided list has enough values. If the list is empty this results in dereferencing a null pointer (undefined behavior). If, however, the list has some elements, if the restoration index is outside the bounds this results in heap OOB read. We have patched the issue in GitHub commit 9e82dce6e6bd1f36a57e08fa85af213e2b2f2622. 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.

References

▼	URL	Tags
	https://github.com/tensorflow/tensorflow/security/advisories/GHSA-gh6x-4whr-2qv4	x_refsource_CONFIRM
	https://github.com/tensorflow/tensorflow/commit/9e82dce6e6bd1f36a57e08fa85af213e2b2f2622	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	tensorflow	tensorflow	Version: >= 2.5.0, < 2.5.1 Version: >= 2.4.0, < 2.4.3 Version: < 2.3.4

Show details on NVD website

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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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