Known exploited vulnerability
CVE-2018-1000861
The short answer
CVE-2018-1000861 affects n/a n/a and is rated critical (CVSS 9.8). CISA added it to the Known Exploited Vulnerabilities catalog on 2022-02-10: attackers are using it, so patch it first. Fixed versions are published for jenkins-core (2.138.4, 2.154).
What it is
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.
Weakness: CWE-502.
Severity
9.8 critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploited (CISA KEV)
Yes, since Feb 10, 2022
Federal due date Aug 10, 2022
EPSS, next 30 days
98%
Higher than 100% of scored CVEs
How it can be exploited
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
What CISA says to do
Apply updates per vendor instructions.
Affected packages and fixed versions
| Package | Ecosystem | Fixed in | Advisory |
|---|---|---|---|
| org.jenkins-ci.main:jenkins-core | Maven | 2.138.4, 2.154 | GHSA-hhpm-5cp2-hg4x |
Is it in your code? Drop your lockfile into the free vulnerability check, or let vulnerability watch check your repository every day and open the upgrade as a pull request.
Affected products
n/a. NVD's record lists the exact affected versions.
References
- access.redhat.com/errata/RHBA-2019:0024 Third Party Advisory
- jenkins.io/security/advisory/2018-12-05/#SECURITY-595 Vendor Advisory
- access.redhat.com/errata/RHBA-2019:0024 Third Party Advisory
- jenkins.io/security/advisory/2018-12-05/#SECURITY-595 Vendor Advisory
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-1000861 US Government Resource
Questions
Is CVE-2018-1000861 being exploited?
Yes. CISA added CVE-2018-1000861 to its Known Exploited Vulnerabilities catalog on 2022-02-10, with a federal remediation due date of 2022-08-10.
How do I fix CVE-2018-1000861?
Upgrade to a fixed version: org.jenkins-ci.main:jenkins-core (Maven) 2.138.4 or 2.154. CISA's required action: Apply updates per vendor instructions.
From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.
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