Security readout for executives and security teams
Plain-English summary
This flaw lets a user who can read Jenkins trigger the Jenkins server to make a GET request to a URL they choose. The main business risk is misuse of Jenkins network reachability, especially where Jenkins can reach internal systems. Public sources provided do not include CVSS, confirmed impact beyond SSRF, or active exploitation evidence.
Executive priority
Treat this as a moderate priority unless Jenkins is broadly accessible or highly privileged on the internal network. Focus first on exposed Jenkins controllers and environments where many users have Overall/Read access.
Technical view
CVE-2018-1000188 is an SSRF issue in Jenkins CAS Plugin 1.4.1 and older, in CasSecurityRealm.java. An attacker with Overall/Read access can cause Jenkins to send a GET request to a specified URL. The provided sources do not state CVSS, CWE, exploit maturity, or a specific fixed version.
Likely exposure
Exposure is likely limited to Jenkins deployments using the CAS Plugin version 1.4.1 or older. Risk is higher when Overall/Read is broadly granted or when Jenkins has network access to sensitive internal services.
Exploitation context
The source bundle does not show CISA KEV listing or any cited active exploitation. The vulnerability requires Overall/Read access, so it is not described as unauthenticated. The demonstrated capability is server-side GET requests to attacker-specified URLs.
Researcher notes
Evidence is narrow: affected component, version boundary, prerequisite permission, and SSRF behavior are provided. No CVSS, CWE, patch version, proof-of-concept status, or exploitation evidence is included in the supplied sources.
Mitigation direction
- Check the Jenkins advisory for official upgrade or mitigation guidance.
- Inventory Jenkins instances for CAS Plugin 1.4.1 or older.
- Restrict Overall/Read access to trusted users only.
- Limit Jenkins outbound access to sensitive internal services where feasible.
- Prioritize remediation on internet-facing or broadly accessible Jenkins systems.
Validation and detection
- Confirm whether the Jenkins CAS Plugin is installed.
- Record the installed CAS Plugin version on each Jenkins controller.
- Review who has Overall/Read permission in Jenkins.
- Assess Jenkins network reachability to internal-only services.
- Check logs for unusual Jenkins-originated outbound GET requests.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
Cloud metadata behavior lookup
The CVE wording references SSRF or metadata access, so cloud discovery and credential material review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2018-1000188 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://jenkins.io/security/advisory/2018-06-04/#SECURITY-809CVE reference · x_refsource_CONFIRM
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.