Security readout for executives and security teams
Plain-English summary
This Jira Server and Data Center flaw lets a remote unauthenticated attacker toggle Thread Contention and CPU monitoring settings through a CSRF weakness. The disclosed impact is configuration tampering, not data theft or system takeover. Organizations running affected Jira versions should prioritize normal patching and exposure review.
Executive priority
Schedule remediation in the next regular security patch cycle, sooner for internet-facing or business-critical Jira systems. The known impact is limited, but Jira is usually operationally important and should not remain on affected versions.
Technical view
CVE-2021-43953 is a CSRF vulnerability in Jira Server/Data Center endpoint /secure/admin/ViewInstrumentation.jspa. Affected releases are before 8.13.16 and 8.14.0 through versions before 8.20.5. The source states unauthenticated remote attackers can toggle Thread Contention and CPU monitoring settings.
Likely exposure
Exposure is limited to Atlassian Jira Server and Jira Data Center deployments in the affected version ranges. Cloud products are not identified in the provided sources, so they should not be assumed affected.
Exploitation context
The source bundle does not report active exploitation, and the CVE is not listed as KEV. Public details describe a CSRF issue affecting monitoring configuration, but do not provide CVSS, CWE, exploit maturity, or broader impact evidence.
Researcher notes
Evidence is sparse: no CVSS, CWE, detailed advisory text, or exploitation evidence is included. Analysis should stay anchored to the stated endpoint, CSRF class, affected versions, and monitoring-setting toggle impact.
Mitigation direction
- Upgrade Jira Server/Data Center to 8.13.16, 8.20.5, or later supported versions.
- Review Atlassian issue JRASERVER-73170 for vendor guidance and deployment-specific notes.
- Restrict administrative Jira access paths where operationally feasible.
- Treat internet-exposed affected Jira instances as higher priority for remediation.
Validation and detection
- Inventory Jira Server and Data Center versions across all environments.
- Confirm no instance runs before 8.13.16 or 8.14.0 to before 8.20.5.
- Check whether /secure/admin/ViewInstrumentation.jspa is reachable from untrusted networks.
- Review Jira administration/audit logs for unexpected monitoring setting 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
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2021-43953 mapping review
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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/JRASERVER-73170CVE 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.