CVE-2018-1000861

Known Exploited

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.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 94.49% Top 5%
KEV Since 
Vendor Advisory redhat.com Vendor Advisory jenkins.io
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://jenkins.io/security/advisory/2018-12-05/#SECURITY-595 vendor advisory
https://access.redhat.com/errata/RHBA-2019:0024 third party advisory vendor advisory
http://www.securityfocus.com/bid/106176 vdb entry broken link
http://packetstormsecurity.com/files/166778/Jenkins-Remote-Code-Execution.html vdb entry third party advisory

Frequently Asked Questions

What is the severity of CVE-2018-1000861?
CVE-2018-1000861 has been scored as a critical severity vulnerability.
How to fix CVE-2018-1000861?
To fix CVE-2018-1000861, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-1000861 being actively exploited in the wild?
It is confirmed that CVE-2018-1000861 is actively exploited. Be extra cautious if you are using vulnerable components. According to its EPSS score, there is a ~94% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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