Security readout for executives and security teams
Plain-English summary
This Jenkins flaw lets a malicious build agent bypass Jenkins protections and read or write arbitrary files on the Jenkins master. For a business, that can mean exposure or alteration of CI/CD secrets, build logic, deployment credentials, and source-handling workflows. The bundle does not show active exploitation or a CVSS score.
Executive priority
Prioritize remediation where Jenkins drives deployments or stores production credentials. A compromised agent could affect software delivery integrity, not just Jenkins availability. Treat unknown agent trust as a serious risk until inventory is complete.
Technical view
CVE-2018-1000194 is a path traversal issue in Jenkins FilePath.java and SoloFilePathFilter.java affecting Jenkins 2.120 and older and LTS 2.107.2 and older. A malicious agent can bypass the agent-to-master security subsystem and perform arbitrary file read/write on the master.
Likely exposure
Exposure is most relevant where affected Jenkins versions accept agents that are untrusted, user-controlled, compromised, or broadly delegated to teams. Internet exposure is not required if an attacker can operate or compromise an agent.
Exploitation context
The provided bundle states malicious agents can read and write arbitrary files on the Jenkins master. CISA KEV is false in the bundle, and no cited source in the bundle confirms active exploitation.
Researcher notes
The available evidence is specific about the vulnerable component and trust boundary bypass, but incomplete on CVSS, CWE, fixed versions, and exploit prevalence. Avoid assuming public exploitation from this bundle alone.
Mitigation direction
- Check Jenkins SECURITY-788 for fixed releases and vendor guidance.
- Upgrade affected Jenkins 2.120 or older deployments per vendor guidance.
- Temporarily remove or isolate untrusted agents until remediated.
- Restrict who can create, connect, or administer Jenkins agents.
- Review secrets and deployment credentials if agent compromise is suspected.
Validation and detection
- Inventory Jenkins master versions and compare against affected ranges.
- Identify agents connected to affected Jenkins masters and their owners.
- Verify the Jenkins advisory’s fixed version is installed after remediation.
- Review Jenkins master files and credentials for unauthorized changes.
- Check build and agent audit logs for suspicious agent activity.
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.
File access behavior lookup
The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2018-1000194 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://www.oracle.com/security-alerts/cpuapr2022.htmlCVE reference · x_refsource_MISC
- https://jenkins.io/security/advisory/2018-05-09/#SECURITY-788CVE 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.