Security readout for executives and security teams
Plain-English summary
This issue affects Atlassian Fisheye and Crucible before 4.8.1. A remote attacker could learn the ID of configured Jira application links through a specific plugin resource. The disclosed impact is limited information exposure, not code execution or account takeover.
Executive priority
Treat as a low-priority hygiene fix unless the affected tools are internet-facing or expose sensitive Jira integrations. Patch during normal maintenance, with faster action for externally reachable systems.
Technical view
CVE-2020-4016 is an information disclosure flaw in the crucible-jira-ril plugin's /plugins/servlet/jira-blockers/ resource. Sources state remote attackers can obtain configured Jira application link IDs in Fisheye and Crucible versions before 4.8.1. No CVSS, CWE, or detailed technical advisory is provided in the bundle.
Likely exposure
Exposure is most likely where Atlassian Fisheye or Crucible before 4.8.1 is reachable by untrusted users or networks and has Jira application links configured.
Exploitation context
The source bundle does not identify active exploitation, public exploit availability, or CISA KEV listing. It only states remote information disclosure of Jira application link IDs.
Researcher notes
The available record is sparse: no CVSS vector, CWE, proof details, or workaround are included. Validation should stay focused on version, plugin presence, application-link configuration, and network exposure.
Mitigation direction
- Upgrade Atlassian Fisheye and Crucible to 4.8.1 or later.
- Review Atlassian CRUC-8469 and FE-7285 for vendor guidance.
- Limit Fisheye and Crucible access to trusted users and networks.
- Confirm Jira application link exposure is still necessary.
Validation and detection
- Inventory Fisheye and Crucible deployments and record versions.
- Flag any deployment running earlier than 4.8.1.
- Check whether Jira application links are configured.
- Review access logs for the documented jira-blockers servlet path.
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.
CVE-2020-4016 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://jira.atlassian.com/browse/CRUC-8469CVE reference · x_refsource_MISC
- https://jira.atlassian.com/browse/FE-7285CVE reference · x_refsource_MISC
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.