Security readout for executives and security teams
Plain-English summary
CVE-2018-20420 affects webERP 4.15. A vulnerable company-template file function can allow an existing .sql file on the website to be overwritten through improper access control and path traversal. Sources do not provide CVSS, confirmed exploitation, or a named fix.
Executive priority
Treat this as a targeted integrity risk for organizations running webERP 4.15. Prioritize validation if webERP is internet-facing or supports financial operations. Urgency is moderate because evidence of exploitation and severity scoring is absent.
Technical view
The CVE description names Z_CreateCompanyTemplateFile.php in webERP 4.15. The issue involves insufficient access control around template creation and directory traversal in the TemplateName parameter, allowing overwrite of an existing .sql file on the target web site. Public source detail is limited.
Likely exposure
Exposure is most likely where webERP 4.15 is deployed and the affected administrative/template-generation script is reachable by unauthorized or low-privileged users. Internet exposure would increase urgency, but the sources do not confirm default reachability or required privileges.
Exploitation context
CISA KEV is false in the provided bundle, and the cited sources do not state active exploitation. The public description indicates a traversal-based overwrite condition but does not establish real-world exploitation, exploit maturity, or attacker authentication requirements.
Researcher notes
The record lacks CVSS, CWE, affected CPEs, privilege requirements, and vendor remediation detail. Analysis should stay tied to webERP 4.15 and the named PHP file. Avoid assuming broader product impact without vendor or CVE evidence.
Mitigation direction
- Check webERP vendor guidance for an affected-version fix or supported upgrade path.
- Restrict access to webERP administrative and template-generation functions.
- Disable the affected script if it is not operationally required.
- Review filesystem permissions for webERP-managed .sql files.
- Maintain backups of webERP database and template files before remediation.
Validation and detection
- Inventory webERP deployments and confirm whether version 4.15 is present.
- Check whether Z_CreateCompanyTemplateFile.php exists and is reachable.
- Review web logs for unexpected template creation attempts.
- Inspect .sql files for unauthorized modification timestamps.
- Confirm access controls prevent unapproved users from invoking template generation.
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.
File access behavior lookup
The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2018-20420 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://github.com/eddietcc/CVEnotes/blob/master/webERP_4.15_Z_CreateCompanyTemplateFile/README.mdCVE 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.