Deserialization in Tenable Integration-Jira-Cloud
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().
Vulnerability class: Insecure Deserialization
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.0 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.005 (37.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 37th percentile — 37.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Tenable Integration-Jira-Cloud — versions < 1.1.21
- Tenable Jira Cloud
Weakness classification (CWE)
References
- github.com/tenable/integration-jira-cloud/security/advisories/GHSA-8278-88vv-x9… (Third Party Advisory)
- github.com/tenable/integration-jira-cloud/commit/f8c2095fd529e664e7fa25403a0a4a… (Patch, Third Party Advisory)
- pypi.org/project/tenable-jira-cloud/ (Product, Third Party Advisory)
- pyyaml.docsforge.com/master/documentation/ (Third Party Advisory)
Frequently asked questions
- What is CVE-2021-21371?
- CVE-2021-21371 is a medium-severity vulnerability in Tenable Integration-Jira-Cloud, classified under Deserialization of Untrusted Data. CVSS score: 5.0/10. Published 2021-03-10.
- How severe is CVE-2021-21371?
- Medium severity. CVSS v3 base score is 5.0 out of 10.