CVE-2018-1000861 on CISA KEV

A code execution vulnerability exists in the Stapler web framework used by Jenkins 2.153 and earlier, LTS 2.138.3 and earlier in stapler/core/src/main/java/org/kohsuke/stapler/MetaClass.java that allows attackers to invoke some methods on Java objects by accessing crafted URLs th

01What CISA says about this vulnerability

A code execution vulnerability exists in the Stapler web framework used by Jenkins 2.153 and earlier, LTS 2.138.3 and earlier in stapler/core/src/main/java/org/kohsuke/stapler/MetaClass.java that allows attackers to invoke some methods on Java objects by accessing crafted URLs that were not intended to be invoked this way.

02Required action — verbatim from CISA

Apply updates per vendor instructions.

03Notes & references

• jenkins.io — https://jenkins.io/security/advisory/2018-12-05/#SECURITY-595
• access.redhat.com — https://access.redhat.com/errata/RHBA-2019:0024
• www.securityfocus.com — http://www.securityfocus.com/bid/106176
• packetstormsecurity.com — http://packetstormsecurity.com/files/166778/Jenkins-Remote-Code-Execution.html

04SARA's analyst layer — why this matters

This vulnerability is currently on the CISA KEV list, which CISA only adds CVEs to when there is reliable evidence of active exploitation in the wild. For federal civilian agencies, BOD 22-01 requires remediation by the due date above. For everyone else, KEV is the strongest "patch immediately" signal you can get from public threat intel.

05Affected products (summary)

Vendor	Product	Versions
n	a / n/a	n/a

06Detection

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