Jenkins Security Advisory 2021-02-24
Affects plugin: Active Choices Affects plugin: Artifact Repository Parameter Affects plugin: Claim Affects plugin: Configuration Slicing Affects plugin: Repository Connector Affects plugin: Support Core
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/2021-02-24/
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.
- Exploitation likely imminentCVE-2021-21616EPSS puts this in the most-targeted tier (78.8% 30-day exploitation probability). Prioritize alongside KEV items. Riskier than 99.6% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2021-216170.94% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 58% of all EPSS-scored CVEs.
- Exploitation likely imminentCVE-2021-21618EPSS puts this in the most-targeted tier (81.8% 30-day exploitation probability). Prioritize alongside KEV items. Riskier than 99.6% of all EPSS-scored CVEs.
- Moderate exploitation riskCVE-2021-216199.4% 30-day exploitation probability. Patch within normal cadence, watch for KEV listing. Riskier than 95% of all EPSS-scored CVEs.
- Moderate exploitation riskCVE-2021-216201.6% 30-day exploitation probability. Patch within normal cadence, watch for KEV listing. Riskier than 74% of all EPSS-scored CVEs.
- Moderate exploitation riskCVE-2021-216211.2% 30-day exploitation probability. Patch within normal cadence, watch for KEV listing. Riskier than 66% of all EPSS-scored CVEs.
- Moderate exploitation riskCVE-2021-216229.4% 30-day exploitation probability. Patch within normal cadence, watch for KEV listing. Riskier than 95% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2021-21616 | coverage & exploitation status | NVD · CVE.org |
| CVE-2021-21617 | coverage & exploitation status | NVD · CVE.org |
| CVE-2021-21618 | coverage & exploitation status | NVD · CVE.org |
| CVE-2021-21619 | coverage & exploitation status | NVD · CVE.org |
| CVE-2021-21620 | coverage & exploitation status | NVD · CVE.org |
| CVE-2021-21621 | coverage & exploitation status | NVD · CVE.org |
| CVE-2021-21622 | coverage & exploitation status | NVD · CVE.org |
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