Jenkins Security Advisory 2021-04-21
Affects plugin: CloudBees CD Affects plugin: Config File Provider Affects plugin: Templating Engine
CSIRTS triage
- What
- Multiple plugins are affected by security vulnerabilities.
- Who is affected
- Deployments of the affected plugins in Jenkins.
- Urgency
- Remediation is necessary as vulnerabilities could be exploited, though exploitation status is currently unknown.
- Action
- Update the affected plugins to their latest versions.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://www.jenkins.io/security/advisory/2021-04-21/
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Elevated exploitation riskCVE-2021-2164237.8% 30-day exploitation probability — well above the norm. Schedule remediation this cycle. Riskier than 98% of all EPSS-scored CVEs.
- Moderate exploitation riskCVE-2021-216431.1% 30-day exploitation probability. Patch within normal cadence, watch for KEV listing. Riskier than 63% of all EPSS-scored CVEs.
- Moderate exploitation riskCVE-2021-216441.1% 30-day exploitation probability. Patch within normal cadence, watch for KEV listing. Riskier than 62% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2021-216450.89% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 57% of all EPSS-scored CVEs.
- Moderate exploitation riskCVE-2021-216461.7% 30-day exploitation probability. Patch within normal cadence, watch for KEV listing. Riskier than 76% of all EPSS-scored CVEs.
- Moderate exploitation riskCVE-2021-216471.5% 30-day exploitation probability. Patch within normal cadence, watch for KEV listing. Riskier than 71% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2021-21642 | coverage & exploitation status | NVD · CVE.org |
| CVE-2021-21643 | coverage & exploitation status | NVD · CVE.org |
| CVE-2021-21644 | coverage & exploitation status | NVD · CVE.org |
| CVE-2021-21645 | coverage & exploitation status | NVD · CVE.org |
| CVE-2021-21646 | coverage & exploitation status | NVD · CVE.org |
| CVE-2021-21647 | coverage & exploitation status | NVD · CVE.org |
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