Security readout for executives and security teams
Plain-English summary
CVE-2019-5644 lets an unauthenticated person change user account settings in C4G BLIS, including making any user an administrator. For a laboratory information system, that can undermine confidentiality, data integrity, and system availability.
Executive priority
Treat as immediate priority for any active BLIS deployment. The issue can allow full account control without credentials, creating high operational and data-integrity risk for laboratory workflows.
Technical view
Computing For Good Basic Laboratory Information System 3.5 and earlier has improper access control. The CVSS 3.1 vector is network-exploitable, low complexity, no privileges, no user interaction, scope changed, with high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is most likely where C4G BLIS 3.5 or earlier remains reachable on public, hospital, lab, or poorly segmented networks. Internet-facing instances are highest risk because no login is required.
Exploitation context
The source bundle does not show CISA KEV listing or active exploitation evidence. Risk remains severe because the vulnerability is unauthenticated, remotely reachable, and can result in administrator-level control.
Researcher notes
Evidence is limited to the CVE record, CVE List entry, and Rapid7 advisory reference. The bundle names affected versions as 3.5 and earlier but does not provide detailed fixed-version guidance.
Mitigation direction
- Identify all C4G BLIS deployments and versions.
- Upgrade affected BLIS 3.5 or earlier systems per vendor or Rapid7 guidance.
- Restrict BLIS access to trusted networks or VPN-only paths.
- Review administrator accounts for unauthorized privilege changes.
- Monitor application and authentication logs for suspicious account modifications.
Validation and detection
- Confirm whether any deployed BLIS instance is version 3.5 or earlier.
- Verify BLIS is not reachable from the public internet.
- Review user records for unexpected administrator promotions.
- Check logs around account-management activity before remediation.
- Confirm vendor guidance or fixed release has been applied.
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-284: Authorization and privilege behavior lookup
Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. 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-2019-5644 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
- Critical
- CVSS
- 10 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
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:N/UI:N/S:C/C:H/I:H/A:H3.96Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
10CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://blog.rapid7.com/2019/09/10/r7-2019-09-cve-2019-5617-cve-2019-5643-cve-2019-5644-c4g-blis-authentication-and-authorization-vulnerabilities-fixed/CVE 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.
Improper Access Control
Improper Access Control represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.