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CVE-2021-21371— Execution of untrusted code through config file

Quick assessment

Affected
tenable integration-jira-cloud
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.

Alex Weber Tenable是 Alex Weber开源的一个应用软件。用于洞悉任何平台上每项资产的风险暴露状况。 Tenable for Jira Cloud 存在安全漏洞，该漏洞允许具有本地访问主机权限的攻击者通过使用一个特别制作的YAML配置文件运行应用程序来运行任意代码。

CVSS 5.0 · Medium EPSS 0.45% · P37

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter
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I. Basic Information for CVE-2021-21371

Vulnerability Information
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Vulnerability Title
Execution of untrusted code through config file
Source: CVE Program / CVE List V5
Vulnerability Description
Tenable for Jira Cloud is an open source project designed to pull Tenable.io vulnerability data, then generate Jira Tasks and sub-tasks based on the vulnerabilities' current state. It published in pypi as "tenable-jira-cloud". In tenable-jira-cloud before version 1.1.21, it is possible to run arbitrary commands through the yaml.load() method. This could allow an attacker with local access to the host to run arbitrary code by running the application with a specially crafted YAML configuration file. This is fixed in version 1.1.21 by using yaml.safe_load() instead of yaml.load().
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
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
Alex Weber Tenable 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Alex Weber Tenable是 Alex Weber开源的一个应用软件。用于洞悉任何平台上每项资产的风险暴露状况。 Tenable for Jira Cloud 存在安全漏洞，该漏洞允许具有本地访问主机权限的攻击者通过使用一个特别制作的YAML配置文件运行应用程序来运行任意代码。
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)

Affected Products

Vendor Product Affected Versions CPE Subscribe
tenable integration-jira-cloud < 1.1.21 -

II. Public POCs for CVE-2021-21371

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III. Intelligence Information for CVE-2021-21371

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Vendor Advisories for CVE-2021-21371 (1)

Other References for CVE-2021-21371 (2)

IV. Related Vulnerabilities

Same vendor: tenable
Same weakness: CWE-502

V. Comments for CVE-2021-21371

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