Jenkins Security Advisory 2021-08-31
Affects plugin: Code Coverage Affects plugin: Microsoft Entra ID (previously Azure AD) Affects plugin: Nested View Affects plugin: Nomad Affects plugin: SAML
CSIRTS triage
- What
- Multiple plugins in Jenkins have vulnerabilities that could potentially be exploited.
- Who is affected
- Deployments of Jenkins and the listed plugins are affected.
- Urgency
- Remediation is necessary as vulnerabilities exist, although exploitation status is currently unknown.
- Action
- Update to the latest versions of Jenkins and the affected plugins.
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/2021-08-31/
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.
- Moderate exploitation riskCVE-2021-216772.2% 30-day exploitation probability. Patch within normal cadence, watch for KEV listing. Riskier than 81% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2021-216780.81% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 54% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2021-216790.68% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 50% of all EPSS-scored CVEs.
- Moderate exploitation riskCVE-2021-216801.3% 30-day exploitation probability. Patch within normal cadence, watch for KEV listing. Riskier than 69% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2021-216810.30% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 22% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2021-21677 | coverage & exploitation status | NVD · CVE.org |
| CVE-2021-21678 | coverage & exploitation status | NVD · CVE.org |
| CVE-2021-21679 | coverage & exploitation status | NVD · CVE.org |
| CVE-2021-21680 | coverage & exploitation status | NVD · CVE.org |
| CVE-2021-21681 | coverage & exploitation status | NVD · CVE.org |
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