Security readout for executives and security teams
Plain-English summary
CVE-2021-47757 affects Chikitsa Patient Management System 2.0.2. A logged-in attacker can abuse backup restoration to upload a modified ZIP that places malicious PHP on the server, enabling command execution. This is serious for clinics because the system may hold sensitive patient and operational data.
Executive priority
Treat this as high priority if Chikitsa 2.0.2 is used, especially in patient-facing or internet-accessible environments. The main business risk is unauthorized server control and potential exposure or disruption of patient management data.
Technical view
The issue is an authenticated remote code execution flaw in backup restoration, categorized as CWE-434 unrestricted upload of dangerous file type. The CVSS 3.1 score is 8.8, with network access, low complexity, low privileges, no user interaction, and high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is most relevant where Chikitsa 2.0.2 is deployed and reachable by users who can access backup restoration. Internet-facing deployments or shared credentials increase risk. The provided sources do not identify other affected versions.
Exploitation context
A public Exploit-DB entry exists for this vulnerability, indicating exploit details are publicly available. The source bundle does not show CISA KEV listing or confirmed active exploitation, so active exploitation should not be assumed from the provided evidence.
Researcher notes
Evidence is limited to the CVE record and referenced public resources. The CVE states authenticated RCE through modified backup ZIP upload. No official patch, workaround, or affected-version range beyond 2.0.2 is provided in the source bundle.
Mitigation direction
- Identify whether Chikitsa Patient Management System 2.0.2 is in use.
- Check Chikitsa vendor or repository guidance for fixed versions or official remediation.
- Restrict access to backup restoration to trusted administrative users only.
- Remove public internet exposure where not operationally required.
- Review server file upload and webroot permissions for least privilege.
- Rotate credentials if unauthorized access to Chikitsa is suspected.
Validation and detection
- Confirm installed Chikitsa version from application records or deployment inventory.
- Review user roles with access to backup restoration functionality.
- Check web server directories for unexpected PHP files after backup restore events.
- Review application and web server logs for suspicious authenticated backup activity.
- Verify whether any vendor update or commit addresses backup restoration upload handling.
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-434: File access and web shell behavior lookup
File traversal and upload weaknesses can lead teams to review file, web shell, execution, and collection telemetry. 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 lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-47757 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
- High
- CVSS
- 8.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/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:L/UI:N/S:U/C:H/I:H/A:H2.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.8HighVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- ExploitDB-50572CVE reference · exploit
- Product WebpageCVE reference · product
- Product GitHub RepositoryCVE reference · product
- Product Sourceforge PageCVE reference · product
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.
Unrestricted Upload of File with Dangerous Type
Unrestricted Upload of File with Dangerous Type represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.