Security readout for executives and security teams
Plain-English summary
This issue affects Jenkins deployments using the SAML Plugin 1.0.6 or earlier. An attacker who can control a user’s pre-login session may be able to fix that session and later impersonate the authenticated user. The source bundle does not provide severity scoring.
Executive priority
Prioritize assessment if Jenkins supports production CI/CD or privileged deployment workflows. Account impersonation in Jenkins can affect build integrity and access to secrets, but urgency should be guided by confirmed plugin exposure and vendor remediation guidance.
Technical view
CVE-2018-1000602 is a session fixation flaw in Jenkins SAML Plugin SamlSecurityRealm.java. The vulnerable condition exists in version 1.0.6 and earlier and may allow unauthorized impersonation when the attacker controls the pre-authentication session.
Likely exposure
Exposure is limited to Jenkins instances using the SAML Plugin 1.0.6 or earlier. Risk depends on whether SAML authentication is enabled and whether attackers can influence pre-authentication sessions.
Exploitation context
The provided sources do not state active exploitation, and KEV is false. The description indicates a precondition: attacker control of the pre-authentication session. No exploitation method is described in the bundle.
Researcher notes
Evidence is sparse in the bundle: affected component, affected version range, vulnerability class, and precondition are stated. CVSS, CWE, fixed version, workaround, and exploit evidence are not included. Avoid assuming impact beyond session-based impersonation in affected Jenkins SAML Plugin deployments.
Mitigation direction
- Inventory Jenkins instances using the SAML Plugin.
- Identify any installed SAML Plugin versions 1.0.6 or earlier.
- Review Jenkins SECURITY-916 and plugin guidance for fixed versions or workarounds.
- If vendor guidance names a fixed release, upgrade through approved Jenkins plugin management.
- Monitor Jenkins authentication activity for suspicious impersonation indicators.
Validation and detection
- Confirm whether Jenkins uses the SAML security realm.
- Check the installed Jenkins SAML Plugin version.
- Map affected Jenkins instances to business-critical CI/CD workflows.
- Review authentication logs for unusual session or account-switching behavior.
- Verify remediation against Jenkins advisory guidance after changes.
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
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CVE-2018-1000602 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/2018-06-25/#SECURITY-916CVE 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.