CVE-2021-21371

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().

How to fix CVE-2021-21371

To remediate CVE-2021-21371, upgrade the affected package to a fixed version below.

• —upgrade to 1.1.21 or later
• —upgrade to f8c2095fd529e664e7fa25403a0a4a85bb3907d0 or later

Is CVE-2021-21371 being exploited?

Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.

Affected packages (2)

• from 0, < 1.1.21
• from 0, < f8c2095fd529e664e7fa25403a0a4a85bb3907d0 | from 0, < 1.1.22

CVSS scores

References (8)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2021-21371
• PATCHgithub.com/tenable/integration-jira-cloud
• PATCHpypi.org/project/tenable-jira-cloud/
• WEBgithub.com/pypa/advisory-database/tree/main/vulns/tenable-jira-cloud/PYSEC-2021-60.yaml