Vulnerability Monitor

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CVE-2021-21371

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().

Security Impact Summary

This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 5.0, requiring local system access to exploit with relatively low complexity though user interaction is required and does not require pre-existing privileges . The vulnerability impacts limited data confidentiality, limited integrity, for affected systems. Impacting 1 product from tenable organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2021, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.

Published

2021-03-10T22:15:12.307

Last Modified

2024-11-21T05:48:13.120

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 5.0 (MEDIUM)

CVSSv2 Vector

AV:L/AC:L/Au:N/C:P/I:P/A:P

Access Vector: LOCAL
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: PARTIAL

Exploitability Score

3.9

Impact Score

6.4

Weaknesses

Type: Secondary
CWE-502

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	tenable	jira_cloud	< 1.1.21	Yes

References

https://github.com/tenable/integration-jira-cloud/commit/f8c2095fd529e664e7fa25403a0a4a85bb3907d0 Patch, Third Party Advisory ([email protected])
https://github.com/tenable/integration-jira-cloud/security/advisories/GHSA-8278-88vv-x98r Third Party Advisory ([email protected])
https://pypi.org/project/tenable-jira-cloud/ Product, Third Party Advisory ([email protected])
https://pyyaml.docsforge.com/master/documentation/#loading-yaml Third Party Advisory ([email protected])
https://github.com/tenable/integration-jira-cloud/commit/f8c2095fd529e664e7fa25403a0a4a85bb3907d0 Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/tenable/integration-jira-cloud/security/advisories/GHSA-8278-88vv-x98r Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://pypi.org/project/tenable-jira-cloud/ Product, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://pyyaml.docsforge.com/master/documentation/#loading-yaml Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For tenable's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.