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CVE-2021-39207— Deserialization of Untrusted Data in parlai

Quick assessment

Affected
facebookresearch ParlAI
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.

parlai是用于在各种公开可用的对话数据集上训练和评估 AI 模型。 parlai 存在代码问题漏洞，该漏洞源于在受影响的版本中，不安全的加载包很容易受到YAML反序列化攻击。攻击者可利用该漏洞导致任意代码执行。

CVSS 8.4 · High EPSS 1.79% · P77

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-39207

Vulnerability Information
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Vulnerability Title
Deserialization of Untrusted Data in parlai
Source: CVE Program / CVE List V5
Vulnerability Description
parlai is a framework for training and evaluating AI models on a variety of openly available dialogue datasets. In affected versions the package is vulnerable to YAML deserialization attack caused by unsafe loading which leads to Arbitary code execution. This security bug is patched by avoiding unsafe loader users should update to version above v1.1.0. If upgrading is not possible then users can change the Loader used to SafeLoader as a workaround. See commit 507d066ef432ea27d3e201da08009872a2f37725 for details.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
可信数据的反序列化
Source: CVE Program / CVE List V5
Vulnerability Title
parlai 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
parlai是用于在各种公开可用的对话数据集上训练和评估 AI 模型。 parlai 存在代码问题漏洞，该漏洞源于在受影响的版本中，不安全的加载包很容易受到YAML反序列化攻击。攻击者可利用该漏洞导致任意代码执行。
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
facebookresearch ParlAI < 1.1.0 -

II. Public POCs for CVE-2021-39207

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III. Intelligence Information for CVE-2021-39207

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Patches & Fixes for CVE-2021-39207 (2)

Vendor Advisories for CVE-2021-39207 (1)

IV. Related Vulnerabilities

Same product: ParlAI
Same vendor: facebookresearch
Same weakness: CWE-502

V. Comments for CVE-2021-39207

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