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CVE-2022-1471— Remote Code execution in SnakeYAML

Quick assessment

Affected
SnakeYAML SnakeYAML
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

SnakeYAML是一款基于Java的YAML解析器。 SnakeYaml存在代码问题漏洞，该漏洞源于不限制在反序列化期间可以实例化的类型。攻击者利用该漏洞可以远程执行代码。

CVSS 8.3 · High EPSS 99.57% · P100

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter
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I. Basic Information for CVE-2022-1471

Vulnerability Information
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Vulnerability Title
Remote Code execution in SnakeYAML
Source: CVE Program / CVE List V5
Vulnerability Description
SnakeYaml's Constructor() class does not restrict types which can be instantiated during deserialization. Deserializing yaml content provided by an attacker can lead to remote code execution. We recommend using SnakeYaml's SafeConsturctor when parsing untrusted content to restrict deserialization. We recommend upgrading to version 2.0 and beyond.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
SnakeYAML 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
SnakeYAML是一款基于Java的YAML解析器。 SnakeYaml存在代码问题漏洞，该漏洞源于不限制在反序列化期间可以实例化的类型。攻击者利用该漏洞可以远程执行代码。
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)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
SnakeYAML SnakeYAML 0 ~ 2.0 -

II. Public POCs for CVE-2022-1471

# POC Description Source Link Shenlong Link
1 Code for veracode blog https://github.com/1fabunicorn/SnakeYAML-CVE-2022-1471-POC POC Details
2 SnakeYAML-CVE-2022-1471-POC https://github.com/falconkei/snakeyaml_cve_poc POC Details
3 SnakeYAML CVE-2022-1471 exploit payload for demo https://github.com/seal-sec-demo-2/yaml-payload POC Details
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III. Intelligence Information for CVE-2022-1471

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Vendor Advisories for CVE-2022-1471 (4)

Mailing List Discussions for CVE-2022-1471 (1)

Other References for CVE-2022-1471 (4)

IV. Related Vulnerabilities

Same product: SnakeYAML
Same vendor: SnakeYAML
Same weakness: CWE-20

V. Comments for CVE-2022-1471

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