Description
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.
Remediation
References
http://packetstormsecurity.com/files/166778/Jenkins-Remote-Code-Execution.html
http://www.securityfocus.com/bid/106176
https://access.redhat.com/errata/RHBA-2019:0024
https://jenkins.io/security/advisory/2018-12-05/#SECURITY-595
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-1000861
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