Security readout for executives and security teams
Plain-English summary
An authenticated Banner Student Self-Service user may be able to view another student's card data because access control around a student identifier is insufficient. The main business risk is unauthorized disclosure of student information, not system takeover.
Executive priority
Prioritize assessment for education environments using Banner 9.17 because the likely impact is student data exposure. Escalate remediation through normal privacy and application-security channels, but do not treat it as confirmed active exploitation based on this bundle.
Technical view
CVE-2023-49339 describes an IDOR/CWE-639 issue in Ellucian Banner 9.17 affecting /StudentSelfService/ssb/studentCard/retrieveData. CVSS 3.1 is 6.5: network reachable, low complexity, low privileges required, no user interaction, high confidentiality impact, no integrity or availability impact.
Likely exposure
Most relevant to institutions running Ellucian Banner 9.17 with Student Self-Service available to authenticated users. The source bundle does not provide a complete affected-version range, patch status, or deployment-specific prerequisites.
Exploitation context
The bundle includes a public GitHub reference, but CISA KEV status is false and no cited source confirms active exploitation. Treat this as credible exposure for Banner environments, especially where many student accounts have access.
Researcher notes
Evidence supports IDOR/CWE-639 with confidentiality impact and authenticated attack requirements. The affected product metadata is incomplete in the CVE bundle, and no official fix detail is included. Avoid assuming broader Banner versions are affected without vendor confirmation.
Mitigation direction
- Check Ellucian guidance for fixed versions or official remediation.
- Upgrade or apply vendor fixes if Ellucian identifies one.
- Enforce server-side authorization on student record access paths.
- Review access logs for unusual student-card data access patterns.
- Limit Student Self-Service exposure to required authenticated populations.
Validation and detection
- Inventory Banner and Student Self-Service versions in production.
- Confirm whether Banner 9.17 is deployed or recently was deployed.
- Test authorization in a controlled environment using authorized accounts only.
- Verify users cannot access records outside their entitlement.
- Review logs for repeated access to many student records.
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.
CWE-639: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2023-49339 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
- Medium
- CVSS
- 6.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
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 vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N2.83.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.5MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.ellucian.com/solutions/ellucian-bannerCVE reference
- https://github.com/3zizme/CVE-2023-49339/CVE reference
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.
Authorization Bypass Through User-Controlled Key
Authorization Bypass Through User-Controlled Key represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.