← gociux.comall exploited CVEs

Exploited vulnerability · CISA KEV

Is CVE-2018-1000861 exploited? Yes: in CISA KEV since 10 Feb 2022

Gociux · Jenkins Stapler Web Framework · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2018-1000861, Jenkins Stapler Web Framework Deserialization of Untrusted Data Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 10 Feb 2022, 1158 days after it was published. It affects Jenkins Stapler Web Framework. If you run it, CISA's required action is: Apply updates per vendor instructions.

exploitedYesCISA KEV · 10 Feb 2022
ransomwareNot knownno confirmed use
EPSStop 1%among the most likely CVEs to be exploited
severity9.8CVSS 3.1 · critical
US federal due10 Aug 2022BOD 22-01 deadline

What it is

A code execution vulnerability exists in the Stapler web framework used by Jenkins

VendorJenkins (6 exploited CVEs in KEV)
ProductJenkins Stapler Web Framework
VulnerabilityJenkins Stapler Web Framework Deserialization of Untrusted Data Vulnerability
WeaknessCWE-502
Published10 Dec 2018
Added to KEV10 Feb 2022
Reported by (CNA)mitre

What to do

  1. Check whether you run it. Look for Jenkins Stapler Web Framework in your asset inventory, including appliances and cloud images. Stack check lists every exploited Jenkins CVE at once.
  2. Apply the fix. Apply updates per vendor instructions.
  3. If you can't patch today, take the affected service off the internet or restrict who can reach it, and check its logs for signs of compromise since 10 Dec 2018.
  4. Get told next time. Email alerts when CISA adds a CVE for Jenkins.

References

Questions

Is CVE-2018-1000861 being exploited?

Yes. CISA added CVE-2018-1000861 to the Known Exploited Vulnerabilities catalog on 10 Feb 2022, which means there is reliable evidence of exploitation in the wild.

Is CVE-2018-1000861 used in ransomware attacks?

CISA does not list known ransomware use for it. That can change, and exploitation alone is reason to fix it first.

How do I fix CVE-2018-1000861?

Apply updates per vendor instructions. Check Jenkins's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected Jenkins Stapler Web Framework and watch it for signs of compromise.

Sources: CISA KEV (exploitation, ransomware use, required action, due date), the CVE record (publication date, CVSS, CNA), NVD and FIRST EPSS (live score). More: all KEV additions in February 2022 · Jenkins scorecard · act-now radar.

Running Jenkins in a regulated environment?

We check exposure across your estate, patch or mitigate with your team, and set up detection for what attackers do after exploiting it.

Get in touch →