Is CVE-2021-21670 in the CISA KEV catalog?

No. CVE-2021-21670 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-21670?

CVE-2021-21670 has a CVSS v3 base score of 4.3 (MEDIUM).

What is the EPSS score for CVE-2021-21670?

CVE-2021-21670 has an EPSS score of 1.98% (78th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-21670?

Upgrade jenkins to 2.289.2 or later.

CVE & CISA-KEV Catalog

CVE-2021-21670

MEDIUMEPSS 78th pctl

4.3

CVSS v3

NVD

Description

Jenkins 2.299 and earlier, LTS 2.289.1 and earlier allows users to cancel queue items and abort builds of jobs for which they have Item/Cancel permission even when they do not have Item/Read permission.

How to fix

Remediation Available

jenkinsNVD

Affected:< 2.289.2Fixed in:2.289.2CVE-2021-21670derived from NVD

Affected:< 2.300Fixed in:2.300CVE-2021-21670derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityLow

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Exploit Intelligence

1.98%probability of exploitation in 30 days

78thpercentile

Elevated risk: more likely to be exploited than 78% of all known CVEs.

References

Vendor Advisory1

jenkins.io

Third-Party Advisory1

openwall.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.