CVE-2018-1000863

Jenkins vulnerability

CVSS

8.2

EPSS

6.8%

EPSS pct

93th

Exploited

No known

A data modification vulnerability exists in Jenkins 2.153 and earlier, LTS 2.138.3 and earlier in User.java, IdStrategy.java that allows attackers to submit crafted user names that can cause an improper migration of user record storage formats, potentially preventing the victim from logging into Jenkins.

Affected vendor

Jenkins

Affected product

Jenkins

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

Weakness type (CWE)

CWE-22 — Path Traversal

Published

2018-12-10

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to low impact to integrity, high impact to availability.

Its EPSS score of 6.8% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 93% of all scored CVEs.

Check your external exposure to CVE-2018-1000863

Confirm whether Jenkins Jenkins is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2018-1000863.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2018-1000863

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